From 88fd63ad10faa746ef9d7ad7d98a72e51fe2aa86 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Thu, 5 Oct 2017 02:06:21 +0300
Subject: [PATCH] split memories away from Pico

saves ~3k of code on ARM because Pico no longer crosses ldr limit
---
 pico/32x/memory.c                       |   2 +-
 pico/32x/pwm.c                          |   6 +-
 pico/cart.c                             |  72 +++++++--------
 pico/carthw/carthw.c                    |  12 +--
 pico/carthw/eeprom_spi.c                |  10 +-
 pico/cd/gfx_dma.c                       |   6 +-
 pico/cd/mcd.c                           |  50 +++++-----
 pico/cd/memory.c                        |  18 ++--
 pico/cd/{memory_arm.s => memory_arm.S}  |  57 ++++++------
 pico/debug.c                            |  38 ++++----
 pico/draw.c                             |  56 ++++++------
 pico/draw2.c                            |  24 ++---
 pico/draw2_arm.S                        |  40 ++++----
 pico/draw_arm.S                         | 116 ++++++++++++------------
 pico/eeprom.c                           |  38 ++++----
 pico/memory.c                           |  95 +++++++++----------
 pico/{memory_amips.s => memory_amips.S} |  64 ++++++-------
 pico/{memory_arm.s => memory_arm.S}     |  90 +++++++++---------
 pico/mode4.c                            |  10 +-
 pico/pico.c                             |  42 ++++-----
 pico/pico_cmn.c                         |  28 +++---
 pico/pico_int.h                         |  83 +++++++++--------
 pico/pico_int_o32.h                     |  37 +++++---
 pico/sek.c                              |  29 +++---
 pico/sms.c                              |  20 ++--
 pico/state.c                            |  50 +++++-----
 pico/videoport.c                        |  54 +++++------
 platform/common/common.mak              |   4 +-
 platform/common/emu.c                   |  16 ++--
 tools/mkoffsets.c                       |  53 ++++++++---
 30 files changed, 633 insertions(+), 587 deletions(-)
 rename pico/cd/{memory_arm.s => memory_arm.S} (93%)
 rename pico/{memory_amips.s => memory_amips.S} (93%)
 rename pico/{memory_arm.s => memory_arm.S} (73%)

diff --git a/pico/32x/memory.c b/pico/32x/memory.c
index 2f3499c..f3b7006 100644
--- a/pico/32x/memory.c
+++ b/pico/32x/memory.c
@@ -1159,7 +1159,7 @@ static void bank_switch(int b)
     return;
 
   bank = b << 20;
-  if ((Pico.m.sram_reg & SRR_MAPPED) && bank == SRam.start) {
+  if ((Pico.m.sram_reg & SRR_MAPPED) && bank == Pico.sv.start) {
     bank_map_handler();
     return;
   }
diff --git a/pico/32x/pwm.c b/pico/32x/pwm.c
index 1aba914..5073564 100644
--- a/pico/32x/pwm.c
+++ b/pico/32x/pwm.c
@@ -326,11 +326,11 @@ void p32x_pwm_state_loaded(void)
   p32x_pwm_ctl_changed();
 
   // for old savestates
-  cycles_diff_sh2 = SekCycleCnt * 3 - Pico32x.pwm_cycle_p;
+  cycles_diff_sh2 = Pico.t.m68c_cnt * 3 - Pico32x.pwm_cycle_p;
   if (cycles_diff_sh2 >= pwm_cycles || cycles_diff_sh2 < 0) {
     Pico32x.pwm_irq_cnt = pwm_irq_reload;
-    Pico32x.pwm_cycle_p = SekCycleCnt * 3;
-    p32x_pwm_schedule(SekCycleCnt);
+    Pico32x.pwm_cycle_p = Pico.t.m68c_cnt * 3;
+    p32x_pwm_schedule(Pico.t.m68c_cnt);
   }
 }
 
diff --git a/pico/cart.c b/pico/cart.c
index 1ce8059..f17ce5e 100644
--- a/pico/cart.c
+++ b/pico/cart.c
@@ -617,9 +617,9 @@ int PicoCartInsert(unsigned char *rom, unsigned int romsize, const char *carthw_
   Pico.rom=rom;
   Pico.romsize=romsize;
 
-  if (SRam.data) {
-    free(SRam.data);
-    SRam.data = NULL;
+  if (Pico.sv.data) {
+    free(Pico.sv.data);
+    Pico.sv.data = NULL;
   }
 
   if (PicoCartUnloadHook != NULL) {
@@ -949,8 +949,8 @@ static void parse_carthw(const char *carthw_cfg, int *fill_sram)
         elprintf(EL_STATUS, "carthw:%d: bad sram_range: %08x - %08x", line, start, end);
         goto bad_nomsg;
       }
-      SRam.start = start;
-      SRam.end = end;
+      Pico.sv.start = start;
+      Pico.sv.end = end;
       continue;
     }
     else if (is_expr("prop", &p)) {
@@ -959,9 +959,9 @@ static void parse_carthw(const char *carthw_cfg, int *fill_sram)
       rstrip(p);
 
       if      (strcmp(p, "no_sram") == 0)
-        SRam.flags &= ~SRF_ENABLED;
+        Pico.sv.flags &= ~SRF_ENABLED;
       else if (strcmp(p, "no_eeprom") == 0)
-        SRam.flags &= ~SRF_EEPROM;
+        Pico.sv.flags &= ~SRF_EEPROM;
       else if (strcmp(p, "filled_sram") == 0)
         *fill_sram = 1;
       else if (strcmp(p, "force_6btn") == 0)
@@ -982,8 +982,8 @@ static void parse_carthw(const char *carthw_cfg, int *fill_sram)
       type = strtoul(p, &r, 0);
       if (r == p || type < 0)
         goto bad;
-      SRam.eeprom_type = type;
-      SRam.flags |= SRF_EEPROM;
+      Pico.sv.eeprom_type = type;
+      Pico.sv.flags |= SRF_EEPROM;
       continue;
     }
     else if (is_expr("eeprom_lines", &p)) {
@@ -998,9 +998,9 @@ static void parse_carthw(const char *carthw_cfg, int *fill_sram)
           sda_out < 0 || sda_out > 15)
         goto bad;
 
-      SRam.eeprom_bit_cl = scl;
-      SRam.eeprom_bit_in = sda_in;
-      SRam.eeprom_bit_out= sda_out;
+      Pico.sv.eeprom_bit_cl = scl;
+      Pico.sv.eeprom_bit_in = sda_in;
+      Pico.sv.eeprom_bit_out= sda_out;
       continue;
     }
     else if ((tmp = is_expr("prot_ro_value16", &p)) || is_expr("prot_rw_value16", &p)) {
@@ -1040,54 +1040,54 @@ static void PicoCartDetect(const char *carthw_cfg)
 {
   int fill_sram = 0;
 
-  memset(&SRam, 0, sizeof(SRam));
+  memset(&Pico.sv, 0, sizeof(Pico.sv));
   if (Pico.rom[0x1B1] == 'R' && Pico.rom[0x1B0] == 'A')
   {
-    SRam.start =  rom_read32(0x1B4) & ~0xff000001; // align
-    SRam.end   = (rom_read32(0x1B8) & ~0xff000000) | 1;
+    Pico.sv.start =  rom_read32(0x1B4) & ~0xff000001; // align
+    Pico.sv.end   = (rom_read32(0x1B8) & ~0xff000000) | 1;
     if (Pico.rom[0x1B2] & 0x40)
       // EEPROM
-      SRam.flags |= SRF_EEPROM;
-    SRam.flags |= SRF_ENABLED;
+      Pico.sv.flags |= SRF_EEPROM;
+    Pico.sv.flags |= SRF_ENABLED;
   }
-  if (SRam.end == 0 || SRam.start > SRam.end)
+  if (Pico.sv.end == 0 || Pico.sv.start > Pico.sv.end)
   {
     // some games may have bad headers, like S&K and Sonic3
     // note: majority games use 0x200000 as starting address, but there are some which
     // use something else (0x300000 by HardBall '95). Luckily they have good headers.
-    SRam.start = 0x200000;
-    SRam.end   = 0x203FFF;
-    SRam.flags |= SRF_ENABLED;
+    Pico.sv.start = 0x200000;
+    Pico.sv.end   = 0x203FFF;
+    Pico.sv.flags |= SRF_ENABLED;
   }
 
   // set EEPROM defaults, in case it gets detected
-  SRam.eeprom_type   = 0; // 7bit (24C01)
-  SRam.eeprom_bit_cl = 1;
-  SRam.eeprom_bit_in = 0;
-  SRam.eeprom_bit_out= 0;
+  Pico.sv.eeprom_type   = 0; // 7bit (24C01)
+  Pico.sv.eeprom_bit_cl = 1;
+  Pico.sv.eeprom_bit_in = 0;
+  Pico.sv.eeprom_bit_out= 0;
 
   if (carthw_cfg != NULL)
     parse_carthw(carthw_cfg, &fill_sram);
 
-  if (SRam.flags & SRF_ENABLED)
+  if (Pico.sv.flags & SRF_ENABLED)
   {
-    if (SRam.flags & SRF_EEPROM)
-      SRam.size = 0x2000;
+    if (Pico.sv.flags & SRF_EEPROM)
+      Pico.sv.size = 0x2000;
     else
-      SRam.size = SRam.end - SRam.start + 1;
+      Pico.sv.size = Pico.sv.end - Pico.sv.start + 1;
 
-    SRam.data = calloc(SRam.size, 1);
-    if (SRam.data == NULL)
-      SRam.flags &= ~SRF_ENABLED;
+    Pico.sv.data = calloc(Pico.sv.size, 1);
+    if (Pico.sv.data == NULL)
+      Pico.sv.flags &= ~SRF_ENABLED;
 
-    if (SRam.eeprom_type == 1)	// 1 == 0 in PD EEPROM code
-      SRam.eeprom_type = 0;
+    if (Pico.sv.eeprom_type == 1)	// 1 == 0 in PD EEPROM code
+      Pico.sv.eeprom_type = 0;
   }
 
-  if ((SRam.flags & SRF_ENABLED) && fill_sram)
+  if ((Pico.sv.flags & SRF_ENABLED) && fill_sram)
   {
     elprintf(EL_STATUS, "SRAM fill");
-    memset(SRam.data, 0xff, SRam.size);
+    memset(Pico.sv.data, 0xff, Pico.sv.size);
   }
 
   // Unusual region 'code'
diff --git a/pico/carthw/carthw.c b/pico/carthw/carthw.c
index a8b4333..a18e5a4 100644
--- a/pico/carthw/carthw.c
+++ b/pico/carthw/carthw.c
@@ -318,7 +318,7 @@ static void carthw_pier_write8(u32 a, u32 d)
       base = d << 19;
       goto do_map;
     case 0x09:
-      SRam.changed = 1;
+      Pico.sv.changed = 1;
       eeprom_spi_write(d);
       break;
     case 0x0b:
@@ -449,11 +449,11 @@ void carthw_pier_startup(void)
 
   // save EEPROM
   eeprom_state = eeprom_spi_init(&eeprom_size);
-  SRam.flags = 0;
-  SRam.size = 0x10000;
-  SRam.data = calloc(1, SRam.size);
-  if (!SRam.data)
-    SRam.size = 0;
+  Pico.sv.flags = 0;
+  Pico.sv.size = 0x10000;
+  Pico.sv.data = calloc(1, Pico.sv.size);
+  if (!Pico.sv.data)
+    Pico.sv.size = 0;
   carthw_pier_state[2].ptr = eeprom_state;
   carthw_pier_state[2].size = eeprom_size;
 
diff --git a/pico/carthw/eeprom_spi.c b/pico/carthw/eeprom_spi.c
index 9643067..b250aff 100644
--- a/pico/carthw/eeprom_spi.c
+++ b/pico/carthw/eeprom_spi.c
@@ -210,7 +210,7 @@ void eeprom_spi_write(unsigned char data)
               if (spi_eeprom.opcode & 0x01)
               {
                 /* READ operation */
-                spi_eeprom.buffer = SRam.data[spi_eeprom.addr];
+                spi_eeprom.buffer = Pico.sv.data[spi_eeprom.addr];
                 spi_eeprom.state = READ_BYTE;
               }
               else
@@ -266,7 +266,7 @@ void eeprom_spi_write(unsigned char data)
                       /* $C000-$FFFF (sector #3) is protected */
                       if (spi_eeprom.addr < 0xC000)
                       {
-                        SRam.data[spi_eeprom.addr] = spi_eeprom.buffer;
+                        Pico.sv.data[spi_eeprom.addr] = spi_eeprom.buffer;
                       }
                       break;
                     }
@@ -276,7 +276,7 @@ void eeprom_spi_write(unsigned char data)
                       /* $8000-$FFFF (sectors #2 and #3) is protected */
                       if (spi_eeprom.addr < 0x8000)
                       {
-                        SRam.data[spi_eeprom.addr] = spi_eeprom.buffer;
+                        Pico.sv.data[spi_eeprom.addr] = spi_eeprom.buffer;
                       }
                       break;
                     }
@@ -290,7 +290,7 @@ void eeprom_spi_write(unsigned char data)
                     default:
                     {
                       /* no sectors protected */
-                      SRam.data[spi_eeprom.addr] = spi_eeprom.buffer;
+                      Pico.sv.data[spi_eeprom.addr] = spi_eeprom.buffer;
                       break;
                     }
                   }
@@ -332,7 +332,7 @@ void eeprom_spi_write(unsigned char data)
               {
                 /* read next array byte */
                 spi_eeprom.addr = (spi_eeprom.addr + 1) & SIZE_MASK;
-                spi_eeprom.buffer = SRam.data[spi_eeprom.addr];
+                spi_eeprom.buffer = Pico.sv.data[spi_eeprom.addr];
               }
             }
           }
diff --git a/pico/cd/gfx_dma.c b/pico/cd/gfx_dma.c
index a24a1c3..7dfe4bc 100644
--- a/pico/cd/gfx_dma.c
+++ b/pico/cd/gfx_dma.c
@@ -26,7 +26,7 @@ PICO_INTERNAL void DmaSlowCell(unsigned int source, unsigned int a, int len, uns
   switch (Pico.video.type)
   {
     case 1: // vram
-      r = Pico.vram;
+      r = PicoMem.vram;
       for(; len; len--)
       {
         asrc = cell_map(source >> 2) << 2;
@@ -42,7 +42,7 @@ PICO_INTERNAL void DmaSlowCell(unsigned int source, unsigned int a, int len, uns
 
     case 3: // cram
       Pico.m.dirtyPal = 1;
-      r = Pico.cram;
+      r = PicoMem.cram;
       for(a2=a&0x7f; len; len--)
       {
         asrc = cell_map(source >> 2) << 2;
@@ -58,7 +58,7 @@ PICO_INTERNAL void DmaSlowCell(unsigned int source, unsigned int a, int len, uns
       break;
 
     case 5: // vsram[a&0x003f]=d;
-      r = Pico.vsram;
+      r = PicoMem.vsram;
       for(a2=a&0x7f; len; len--)
       {
         asrc = cell_map(source >> 2) << 2;
diff --git a/pico/cd/mcd.c b/pico/cd/mcd.c
index 6d23604..043b4a2 100644
--- a/pico/cd/mcd.c
+++ b/pico/cd/mcd.c
@@ -76,16 +76,16 @@ PICO_INTERNAL int PicoResetMCD(void)
 {
   // reset button doesn't affect MCD hardware
 
-  // use SRam.data for RAM cart
+  // use Pico.sv.data for RAM cart
   if (PicoOpt & POPT_EN_MCD_RAMCART) {
-    if (SRam.data == NULL)
-      SRam.data = calloc(1, 0x12000);
+    if (Pico.sv.data == NULL)
+      Pico.sv.data = calloc(1, 0x12000);
   }
-  else if (SRam.data != NULL) {
-    free(SRam.data);
-    SRam.data = NULL;
+  else if (Pico.sv.data != NULL) {
+    free(Pico.sv.data);
+    Pico.sv.data = NULL;
   }
-  SRam.start = SRam.end = 0; // unused
+  Pico.sv.start = Pico.sv.end = 0; // unused
 
   return 0;
 }
@@ -95,17 +95,17 @@ static void SekRunM68kOnce(void)
   int cyc_do;
   pevt_log_m68k_o(EVT_RUN_START);
 
-  if ((cyc_do = SekCycleAim - SekCycleCnt) > 0) {
-    SekCycleCnt += cyc_do;
+  if ((cyc_do = Pico.t.m68c_aim - Pico.t.m68c_cnt) > 0) {
+    Pico.t.m68c_cnt += cyc_do;
 
 #if defined(EMU_C68K)
     PicoCpuCM68k.cycles = cyc_do;
     CycloneRun(&PicoCpuCM68k);
-    SekCycleCnt -= PicoCpuCM68k.cycles;
+    Pico.t.m68c_cnt -= PicoCpuCM68k.cycles;
 #elif defined(EMU_M68K)
-    SekCycleCnt += m68k_execute(cyc_do) - cyc_do;
+    Pico.t.m68c_cnt += m68k_execute(cyc_do) - cyc_do;
 #elif defined(EMU_F68K)
-    SekCycleCnt += fm68k_emulate(cyc_do, 0) - cyc_do;
+    Pico.t.m68c_cnt += fm68k_emulate(cyc_do, 0) - cyc_do;
 #endif
   }
 
@@ -316,39 +316,39 @@ static void SekSyncM68k(void);
 
 void pcd_run_cpus_normal(int m68k_cycles)
 {
-  SekCycleAim += m68k_cycles;
+  Pico.t.m68c_aim += m68k_cycles;
   if (SekShouldInterrupt() || Pico_mcd->m.m68k_poll_cnt < 12)
     Pico_mcd->m.m68k_poll_cnt = 0;
   else if (Pico_mcd->m.m68k_poll_cnt >= 16) {
-    int s68k_left = pcd_sync_s68k(SekCycleAim, 1);
+    int s68k_left = pcd_sync_s68k(Pico.t.m68c_aim, 1);
     if (s68k_left <= 0) {
       elprintf(EL_CDPOLL, "m68k poll [%02x] x%d @%06x",
         Pico_mcd->m.m68k_poll_a, Pico_mcd->m.m68k_poll_cnt, SekPc);
-      SekCycleCnt = SekCycleAim;
+      Pico.t.m68c_cnt = Pico.t.m68c_aim;
       return;
     }
-    SekCycleCnt = SekCycleAim - (s68k_left * 40220 >> 16);
+    Pico.t.m68c_cnt = Pico.t.m68c_aim - (s68k_left * 40220 >> 16);
   }
 
-  while (CYCLES_GT(SekCycleAim, SekCycleCnt)) {
+  while (CYCLES_GT(Pico.t.m68c_aim, Pico.t.m68c_cnt)) {
     SekRunM68kOnce();
     if (Pico_mcd->m.need_sync) {
       Pico_mcd->m.need_sync = 0;
-      pcd_sync_s68k(SekCycleCnt, 0);
+      pcd_sync_s68k(Pico.t.m68c_cnt, 0);
     }
   }
 }
 
 void pcd_run_cpus_lockstep(int m68k_cycles)
 {
-  unsigned int target = SekCycleAim + m68k_cycles;
+  unsigned int target = Pico.t.m68c_aim + m68k_cycles;
   do {
-    SekCycleAim += 8;
+    Pico.t.m68c_aim += 8;
     SekSyncM68k();
-    pcd_sync_s68k(SekCycleAim, 0);
-  } while (CYCLES_GT(target, SekCycleAim));
+    pcd_sync_s68k(Pico.t.m68c_aim, 0);
+  } while (CYCLES_GT(target, Pico.t.m68c_aim));
 
-  SekCycleAim = target;
+  Pico.t.m68c_aim = target;
 }
 
 #define PICO_CD
@@ -364,7 +364,7 @@ void pcd_prepare_frame(void)
 
   // need this because we can't have direct mapping between
   // master<->slave cycle counters because of overflows
-  mcd_m68k_cycle_base = SekCycleAim;
+  mcd_m68k_cycle_base = Pico.t.m68c_aim;
   mcd_s68k_cycle_base = SekCycleAimS68k;
 }
 
@@ -390,7 +390,7 @@ void pcd_state_loaded(void)
   Pico_mcd->pcm_regs_dirty = 1;
 
   // old savestates..
-  cycles = pcd_cycles_m68k_to_s68k(SekCycleAim);
+  cycles = pcd_cycles_m68k_to_s68k(Pico.t.m68c_aim);
   diff = cycles - SekCycleAimS68k;
   if (diff < -1000 || diff > 1000) {
     SekCycleCntS68k = SekCycleAimS68k = cycles;
diff --git a/pico/cd/memory.c b/pico/cd/memory.c
index fbc7c47..94b81b7 100644
--- a/pico/cd/memory.c
+++ b/pico/cd/memory.c
@@ -602,14 +602,14 @@ static u32 PicoReadM68k8_ramc(u32 a)
 {
   u32 d = 0;
   if (a == 0x400001) {
-    if (SRam.data != NULL)
+    if (Pico.sv.data != NULL)
       d = 3; // 64k cart
     return d;
   }
 
   if ((a & 0xfe0000) == 0x600000) {
-    if (SRam.data != NULL)
-      d = SRam.data[((a >> 1) & 0xffff) + 0x2000];
+    if (Pico.sv.data != NULL)
+      d = Pico.sv.data[((a >> 1) & 0xffff) + 0x2000];
     return d;
   }
 
@@ -629,9 +629,9 @@ static u32 PicoReadM68k16_ramc(u32 a)
 static void PicoWriteM68k8_ramc(u32 a, u32 d)
 {
   if ((a & 0xfe0000) == 0x600000) {
-    if (SRam.data != NULL && (Pico_mcd->m.bcram_reg & 1)) {
-      SRam.data[((a>>1) & 0xffff) + 0x2000] = d;
-      SRam.changed = 1;
+    if (Pico.sv.data != NULL && (Pico_mcd->m.bcram_reg & 1)) {
+      Pico.sv.data[((a>>1) & 0xffff) + 0x2000] = d;
+      Pico.sv.changed = 1;
     }
     return;
   }
@@ -877,7 +877,7 @@ static u32 PicoReadS68k16_bram(u32 a)
 static void PicoWriteS68k8_bram(u32 a, u32 d)
 {
   Pico_mcd->bram[(a >> 1) & 0x1fff] = d;
-  SRam.changed = 1;
+  Pico.sv.changed = 1;
 }
 
 static void PicoWriteS68k16_bram(u32 a, u32 d)
@@ -886,7 +886,7 @@ static void PicoWriteS68k16_bram(u32 a, u32 d)
   a = (a >> 1) & 0x1fff;
   Pico_mcd->bram[a++] = d;
   Pico_mcd->bram[a++] = d >> 8; // TODO: verify..
-  SRam.changed = 1;
+  Pico.sv.changed = 1;
 }
 
 #ifndef _ASM_CD_MEMORY_C
@@ -1175,7 +1175,7 @@ PICO_INTERNAL void PicoMemSetupCD(void)
       PicoCpuFM68k.Fetch[i] = (unsigned long)Pico.rom;
     // .. and RAM
     for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)
-      PicoCpuFM68k.Fetch[i] = (unsigned long)Pico.ram - (i<<(24-FAMEC_FETCHBITS));
+      PicoCpuFM68k.Fetch[i] = (unsigned long)PicoMem.ram - (i<<(24-FAMEC_FETCHBITS));
     // S68k
     // PRG RAM is default
     for (i = 0; i < M68K_FETCHBANK1; i++)
diff --git a/pico/cd/memory_arm.s b/pico/cd/memory_arm.S
similarity index 93%
rename from pico/cd/memory_arm.s
rename to pico/cd/memory_arm.S
index f3a1372..23f0b94 100644
--- a/pico/cd/memory_arm.s
+++ b/pico/cd/memory_arm.S
@@ -6,6 +6,8 @@
 @* See COPYING file in the top-level directory.
 @*
 
+#include "../pico_int_o32.h"
+
 .equiv PCM_STEP_SHIFT, 11
 
 .text
@@ -127,9 +129,9 @@ PicoReadM68k8_cell1:                    @ 0x220000 - 0x23ffff, cell arranged
     mov     r3, #0x0e0000
 0:
     cell_map
-    ldr     r1, =(Pico+0x22200)
+    ldr     r1, =Pico
     add     r0, r0, r3
-    ldr     r1, [r1]
+    ldr     r1, [r1, #OFS_Pico_rom]   @ Pico.mcd (used everywhere)
     eor     r0, r0, #1
     ldrb    r0, [r1, r0]
     bx      lr
@@ -140,9 +142,9 @@ PicoRead8_mcd_io:
     cmp     r1, #0x2000	              @ a120xx?
     bne     PicoRead8_io
 
-    ldr     r1, =(Pico+0x22200)
+    ldr     r1, =Pico
     and     r0, r0, #0x3f
-    ldr     r1, [r1]                  @ Pico.mcd (used everywhere)
+    ldr     r1, [r1, #OFS_Pico_rom]   @ Pico.mcd
     cmp     r0, #0x0e
     ldrlt   pc, [pc, r0, lsl #2]
     b       m_m68k_read8_hi
@@ -237,9 +239,9 @@ PicoReadM68k16_cell1:                   @ 0x220000 - 0x23ffff, cell arranged
     mov     r3, #0x0e0000
 0:
     cell_map
-    ldr     r1, =(Pico+0x22200)
+    ldr     r1, =Pico
     add     r0, r0, r3
-    ldr     r1, [r1]
+    ldr     r1, [r1, #OFS_Pico_rom]   @ Pico.mcd
     bic     r0, r0, #1
     ldrh    r0, [r1, r0]
     bx      lr
@@ -251,9 +253,9 @@ PicoRead16_mcd_io:
     bne     PicoRead16_io
 
 m_m68k_read16_m68k_regs:
-    ldr     r1, =(Pico+0x22200)
+    ldr     r1, =Pico
     and     r0, r0, #0x3e
-    ldr     r1, [r1]                  @ Pico.mcd (used everywhere)
+    ldr     r1, [r1, #OFS_Pico_rom]   @ Pico.mcd
     cmp     r0, #0x0e
     ldrlt   pc, [pc, r0, lsl #1]
     b       m_m68k_read16_hi
@@ -328,8 +330,9 @@ PicoWriteM68k8_cell1:                   @ 0x220000 - 0x23ffff, cell arranged
 0:
     mov     r3, r1
     cell_map
-    ldr     r2, =(Pico+0x22200)
+    ldr     r2, =Pico
     add     r0, r0, r12
+    ldr     r2, [r2, #OFS_Pico_rom]     @ Pico.mcd
     ldr     r2, [r2]
     eor     r0, r0, #1
     strb    r3, [r2, r0]
@@ -355,9 +358,9 @@ PicoWriteM68k16_cell1:                   @ 0x220000 - 0x23ffff, cell arranged
 0:
     mov     r3, r1
     cell_map
-    ldr     r1, =(Pico+0x22200)
+    ldr     r1, =Pico
     add     r0, r0, r12
-    ldr     r1, [r1]
+    ldr     r1, [r1, #OFS_Pico_rom]     @ Pico.mcd
     bic     r0, r0, #1
     strh    r3, [r1, r0]
     bx      lr
@@ -397,9 +400,9 @@ PicoReadS68k8_dec0:                     @ 0x080000 - 0x0bffff
 PicoReadS68k8_dec1:
     mov     r3, #0x0a0000               @ + ^ / 2
 0:
-    ldr     r2, =(Pico+0x22200)
+    ldr     r2, =Pico
     eor     r0, r0, #2
-    ldr     r2, [r2]
+    ldr     r2, [r2, #OFS_Pico_rom]     @ Pico.mcd
     movs    r0, r0, lsr #1              @ +4-6 <<16
     add     r2, r2, r3                  @ map to our address
     ldrb    r0, [r2, r0]
@@ -429,8 +432,8 @@ m_s68k_read8_regs:
     bx      lr
 
 m_s68k_read8_comm:
-    ldr     r1, =(Pico+0x22200)
-    ldr     r1, [r1]
+    ldr     r1, =Pico
+    ldr     r1, [r1, #OFS_Pico_rom]     @ Pico.mcd
     add     r1, r1, #0x110000
     ldrb    r1, [r1, r0]
     bic     r0, r0, #1
@@ -442,9 +445,9 @@ m_s68k_read8_pcm:
     bne     m_read_null
 
     @ must not trash r3 and r12
-    ldr     r1, =(Pico+0x22200)
+    ldr     r1, =Pico
     bic     r0, r0, #0xff0000
-    ldr     r1, [r1]
+    ldr     r1, [r1, #OFS_Pico_rom]     @ Pico.mcd
     mov     r2, #0x110000
     orr     r2, r2, #0x002200
     cmp     r0, #0x2000
@@ -477,9 +480,9 @@ PicoReadS68k16_dec0:                    @ 0x080000 - 0x0bffff
 PicoReadS68k16_dec1:
     mov     r3, #0x0a0000               @ + ^ / 2
 0:
-    ldr     r2, =(Pico+0x22200)
+    ldr     r2, =Pico
     eor     r0, r0, #2
-    ldr     r2, [r2]
+    ldr     r2, [r2, #OFS_Pico_rom]     @ Pico.mcd
     mov     r0, r0, lsr #1              @ +4-6 <<16
     add     r2, r2, r3                  @ map to our address
     ldrb    r0, [r2, r0]
@@ -508,9 +511,9 @@ m_s68k_read16_regs:
 
 
 .macro m_s68k_write8_2M_decode
-    ldr     r2, =(Pico+0x22200)
+    ldr     r2, =Pico
     eor     r0, r0, #2
-    ldr     r2, [r2]			@ Pico.rom
+    ldr     r2, [r2, #OFS_Pico_rom]     @ Pico.mcd
     movs    r0, r0, lsr #1              @ +4-6 <<16
     add     r2, r2, r3                  @ map to our address
 .endm
@@ -592,9 +595,9 @@ m_s68k_write8_pcm:
     bxlt    lr
 
 m_s68k_write8_pcm_ram:
-    ldr     r3, =(Pico+0x22200)
+    ldr     r3, =Pico
     bic     r0, r0, #0x00e000
-    ldr     r3, [r3]
+    ldr     r3, [r3, #OFS_Pico_rom]     @ Pico.mcd
     mov     r0, r0, lsr #1
     add     r2, r3, #0x110000
     add     r2, r2, #0x002200
@@ -611,9 +614,9 @@ m_s68k_write8_pcm_ram:
 
 
 .macro m_s68k_write16_2M_decode
-    ldr     r2, =(Pico+0x22200)
+    ldr     r2, =Pico
     eor     r0, r0, #2
-    ldr     r2, [r2]
+    ldr     r2, [r2, #OFS_Pico_rom]     @ Pico.mcd
     mov     r0, r0, lsr #1              @ +4-6 <<16
     add     r2, r2, r3                  @ map to our address
 .endm
@@ -692,9 +695,9 @@ m_s68k_write16_regs:
     bne     s68k_reg_write16
 
 m_s68k_write16_regs_spec:               @ special case
-    ldr     r2, =(Pico+0x22200)
+    ldr     r2, =Pico
     mov     r0, #0x110000
-    ldr     r2, [r2]
+    ldr     r2, [r2, #OFS_Pico_rom]     @ Pico.mcd
     add     r0, r0, #0x00000f
     strb    r1, [r2, r0]                @ if (a == 0xe) s68k_regs[0xf] = d;
     bx      lr
diff --git a/pico/debug.c b/pico/debug.c
index eb775bf..82ae8a5 100644
--- a/pico/debug.c
+++ b/pico/debug.c
@@ -40,8 +40,8 @@ char *PDebugMain(void)
   sprintf(dstrp, "mode set 4: %02x\n", (r=reg[0xC])); MVP;
   sprintf(dstrp, "interlace: %i%i, cells: %i, shadow: %i\n", bit(r,2), bit(r,1), (r&0x80) ? 40 : 32, bit(r,3)); MVP;
   sprintf(dstrp, "scroll size: w: %i, h: %i  SRAM: %i; eeprom: %i (%i)\n", reg[0x10]&3, (reg[0x10]&0x30)>>4,
-    !!(SRam.flags & SRF_ENABLED), !!(SRam.flags & SRF_EEPROM), SRam.eeprom_type); MVP;
-  sprintf(dstrp, "sram range: %06x-%06x, reg: %02x\n", SRam.start, SRam.end, Pico.m.sram_reg); MVP;
+    !!(Pico.sv.flags & SRF_ENABLED), !!(Pico.sv.flags & SRF_EEPROM), Pico.sv.eeprom_type); MVP;
+  sprintf(dstrp, "sram range: %06x-%06x, reg: %02x\n", Pico.sv.start, Pico.sv.end, Pico.m.sram_reg); MVP;
   sprintf(dstrp, "pend int: v:%i, h:%i, vdp status: %04x\n", bit(pv->pending_ints,5), bit(pv->pending_ints,4), pv->status); MVP;
   sprintf(dstrp, "pal: %i, hw: %02x, frame#: %i, cycles: %u\n", Pico.m.pal, Pico.m.hardware, Pico.m.frame_count, SekCyclesDone()); MVP;
   sprintf(dstrp, "M68k: PC: %06x, SR: %04x, irql: %i\n", SekPc, SekSr, SekIrqLevel); MVP;
@@ -117,7 +117,7 @@ char *PDebugSpriteList(void)
     unsigned int *sprite;
     int code, code2, sx, sy, height;
 
-    sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
+    sprite=(unsigned int *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite
 
     // get sprite info
     code = sprite[0];
@@ -245,23 +245,23 @@ void PDebugShowSprite(unsigned short *screen, int stride, int which)
 
   for (u=0; u < max_sprites && u <= which; u++)
   {
-    sprite=(int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
+    sprite=(int *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite
 
     link=(sprite[0]>>16)&0x7f;
     if (!link) break; // End of sprites
   }
   if (u >= max_sprites) return;
 
-  fsprite = (int *)(Pico.vram+(table&0x7ffc));
+  fsprite = (int *)(PicoMem.vram+(table&0x7ffc));
   oldsprite[0] = fsprite[0];
   oldsprite[1] = fsprite[1];
   fsprite[0] = (sprite[0] & ~0x007f01ff) | 0x000080;
   fsprite[1] = (sprite[1] & ~0x01ff8000) | 0x800000;
   oldreg = pvid->reg[7];
-  oldcol = Pico.cram[0];
+  oldcol = PicoMem.cram[0];
   olddbg = pvid->debug_p;
   pvid->reg[7] = 0;
-  Pico.cram[0] = 0;
+  PicoMem.cram[0] = 0;
   pvid->debug_p = PVD_KILL_A | PVD_KILL_B;
 
   PicoFrameFull();
@@ -276,7 +276,7 @@ void PDebugShowSprite(unsigned short *screen, int stride, int which)
   fsprite[0] = oldsprite[0];
   fsprite[1] = oldsprite[1];
   pvid->reg[7] = oldreg;
-  Pico.cram[0] = oldcol;
+  PicoMem.cram[0] = oldcol;
   pvid->debug_p = olddbg;
 }
 
@@ -325,18 +325,18 @@ void PDebugDumpMem(void)
     dump_ram_m(buf, "dumps/cart.bin", a ? "ab" : "wb");
   }
 #endif
-  dump_ram_noswab(Pico.zram, "dumps/zram.bin");
-  dump_ram(Pico.cram, "dumps/cram.bin");
+  dump_ram_noswab(PicoMem.zram, "dumps/zram.bin");
+  dump_ram(PicoMem.cram, "dumps/cram.bin");
 
   if (PicoAHW & PAHW_SMS)
   {
-    dump_ram_noswab(Pico.vramb, "dumps/vram.bin");
+    dump_ram_noswab(PicoMem.vramb, "dumps/vram.bin");
   }
   else
   {
-    dump_ram(Pico.ram,  "dumps/ram.bin");
-    dump_ram(Pico.vram, "dumps/vram.bin");
-    dump_ram(Pico.vsram,"dumps/vsram.bin");
+    dump_ram(PicoMem.ram,  "dumps/ram.bin");
+    dump_ram(PicoMem.vram, "dumps/vram.bin");
+    dump_ram(PicoMem.vsram,"dumps/vsram.bin");
   }
 
   if (PicoAHW & PAHW_MCD)
@@ -386,12 +386,12 @@ void PDebugZ80Frame(void)
   PsndStartFrame();
 
   if (/*Pico.m.z80Run &&*/ !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
-    PicoSyncZ80(SekCycleCnt + line_sample * 488);
+    PicoSyncZ80(Pico.t.m68c_cnt + line_sample * 488);
   if (PsndOut)
     PsndGetSamples(line_sample);
 
   if (/*Pico.m.z80Run &&*/ !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80)) {
-    PicoSyncZ80(SekCycleCnt + 224 * 488);
+    PicoSyncZ80(Pico.t.m68c_cnt + 224 * 488);
     z80_int();
   }
   if (PsndOut)
@@ -399,15 +399,15 @@ void PDebugZ80Frame(void)
 
   // sync z80
   if (/*Pico.m.z80Run &&*/ !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80)) {
-    SekCycleCnt += Pico.m.pal ? 151809 : 127671; // cycles adjusted for converter
-    PicoSyncZ80(SekCycleCnt);
+    Pico.t.m68c_cnt += Pico.m.pal ? 151809 : 127671; // cycles adjusted for converter
+    PicoSyncZ80(Pico.t.m68c_cnt);
   }
   if (PsndOut && ym2612.dacen && PsndDacLine < lines)
     PsndDoDAC(lines - 1);
   PsndDoPSG(lines - 1);
 
   timers_cycle();
-  SekCycleAim = SekCycleCnt;
+  Pico.t.m68c_aim = Pico.t.m68c_cnt;
 }
 
 void PDebugCPUStep(void)
diff --git a/pico/draw.c b/pico/draw.c
index 5ecbca8..6408f20 100644
--- a/pico/draw.c
+++ b/pico/draw.c
@@ -215,7 +215,7 @@ static void DrawStrip(struct TileStrip *ts, int lflags, int cellskip)
   {
     unsigned int pack;
 
-    code = Pico.vram[ts->nametab + (tilex & ts->xmask)];
+    code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)];
     if (code == blank)
       continue;
     if ((code >> 15) | (lflags & LF_FORCE)) { // high priority tile
@@ -235,7 +235,7 @@ static void DrawStrip(struct TileStrip *ts, int lflags, int cellskip)
       pal=((code>>9)&0x30)|sh;
     }
 
-    pack = *(unsigned int *)(Pico.vram + addr);
+    pack = *(unsigned int *)(PicoMem.vram + addr);
     if (!pack) {
       blank = code;
       continue;
@@ -274,7 +274,7 @@ static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
     //if((cell&1)==0)
     {
       int line,vscroll;
-      vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];
+      vscroll=PicoMem.vsram[(plane_sh&1)+(cell&~1)];
 
       // Find the line in the name table
       line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
@@ -282,7 +282,7 @@ static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
       ty=(line&7)<<1; // Y-Offset into tile
     }
 
-    code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
+    code=PicoMem.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
     if (code==blank) continue;
     if (code>>15) { // high priority tile
       int cval = code | (dx<<16) | (ty<<25);
@@ -300,7 +300,7 @@ static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
       pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);
     }
 
-    pack = *(unsigned int *)(Pico.vram + addr);
+    pack = *(unsigned int *)(PicoMem.vram + addr);
     if (!pack) {
       blank = code;
       continue;
@@ -336,7 +336,7 @@ void DrawStripInterlace(struct TileStrip *ts)
   {
     unsigned int pack;
 
-    code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
+    code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)];
     if (code==blank) continue;
     if (code>>15) { // high priority tile
       int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
@@ -356,7 +356,7 @@ void DrawStripInterlace(struct TileStrip *ts)
       pal=((code>>9)&0x30);
     }
 
-    pack = *(unsigned int *)(Pico.vram + addr);
+    pack = *(unsigned int *)(PicoMem.vram + addr);
     if (!pack) {
       blank = code;
       continue;
@@ -409,11 +409,11 @@ static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells,
   htab+=plane_sh&1; // A or B
 
   // Get horizontal scroll value, will be masked later
-  ts.hscroll=Pico.vram[htab&0x7fff];
+  ts.hscroll = PicoMem.vram[htab & 0x7fff];
 
   if((pvid->reg[12]&6) == 6) {
     // interlace mode 2
-    vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
+    vscroll = PicoMem.vsram[plane_sh & 1]; // Get vertical scroll value
 
     // Find the line in the name table
     ts.line=(vscroll+(est->DrawScanline<<1))&((ymask<<1)|1);
@@ -426,7 +426,7 @@ static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells,
     ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
     DrawStripVSRam(&ts, plane_sh, cellskip);
   } else {
-    vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
+    vscroll = PicoMem.vsram[plane_sh & 1]; // Get vertical scroll value
 
     // Find the line in the name table
     ts.line=(vscroll+est->DrawScanline)&ymask;
@@ -463,7 +463,7 @@ static void DrawWindow(int tstart, int tend, int prio, int sh,
 
   if (!(est->rendstatus & PDRAW_WND_DIFF_PRIO)) {
     // check the first tile code
-    code=Pico.vram[nametab+tilex];
+    code = PicoMem.vram[nametab + tilex];
     // if the whole window uses same priority (what is often the case), we may be able to skip this field
     if ((code>>15) != prio) return;
   }
@@ -480,7 +480,7 @@ static void DrawWindow(int tstart, int tend, int prio, int sh,
       int dx, addr;
       int pal;
 
-      code=Pico.vram[nametab+tilex];
+      code = PicoMem.vram[nametab + tilex];
       if (code==blank) continue;
       if ((code>>15) != prio) {
         est->rendstatus |= PDRAW_WND_DIFF_PRIO;
@@ -491,7 +491,7 @@ static void DrawWindow(int tstart, int tend, int prio, int sh,
       addr=(code&0x7ff)<<4;
       if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
 
-      pack = *(unsigned int *)(Pico.vram + addr);
+      pack = *(unsigned int *)(PicoMem.vram + addr);
       if (!pack) {
         blank = code;
         continue;
@@ -512,7 +512,7 @@ static void DrawWindow(int tstart, int tend, int prio, int sh,
       int dx, addr;
       int pal;
 
-      code=Pico.vram[nametab+tilex];
+      code = PicoMem.vram[nametab + tilex];
       if(code==blank) continue;
       if((code>>15) != prio) {
         est->rendstatus |= PDRAW_WND_DIFF_PRIO;
@@ -533,7 +533,7 @@ static void DrawWindow(int tstart, int tend, int prio, int sh,
       addr=(code&0x7ff)<<4;
       if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
 
-      pack = *(unsigned int *)(Pico.vram + addr);
+      pack = *(unsigned int *)(PicoMem.vram + addr);
       if (!pack) {
         blank = code;
         continue;
@@ -587,7 +587,7 @@ static void DrawTilesFromCache(int *hc, int sh, int rlim, struct PicoEState *est
       addr = (code & 0x7ff) << 4;
       addr += code >> 25; // y offset into tile
 
-      pack = *(unsigned int *)(Pico.vram + addr);
+      pack = *(unsigned int *)(PicoMem.vram + addr);
       if (!pack) {
         blank = (short)code;
         continue;
@@ -615,7 +615,7 @@ static void DrawTilesFromCache(int *hc, int sh, int rlim, struct PicoEState *est
       *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
       *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
 
-      pack = *(unsigned int *)(Pico.vram + addr);
+      pack = *(unsigned int *)(PicoMem.vram + addr);
       if (!pack)
         continue;
 
@@ -717,7 +717,7 @@ static void DrawSprite(int *sprite, int sh)
     if(sx<=0)   continue;
     if(sx>=328) break; // Offscreen
 
-    pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
+    pack = *(unsigned int *)(PicoMem.vram + (tile & 0x7fff));
     fTileFunc(sx, pack, pal);
   }
 }
@@ -737,7 +737,7 @@ static NOINLINE void DrawTilesFromCacheForced(const int *hc)
 
     dx = (code >> 16) & 0x1ff;
     pal = ((code >> 9) & 0x30);
-    pack = *(unsigned int *)(Pico.vram + addr);
+    pack = *(unsigned int *)(PicoMem.vram + addr);
 
     if (code & 0x0800) TileFlip_and(dx, pack, pal);
     else               TileNorm_and(dx, pack, pal);
@@ -783,7 +783,7 @@ static void DrawSpriteInterlace(unsigned int *sprite)
     if(sx<=0)   continue;
     if(sx>=328) break; // Offscreen
 
-    pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
+    pack = *(unsigned int *)(PicoMem.vram + (tile & 0x7fff));
     if (code & 0x0800) TileFlip(sx, pack, pal);
     else               TileNorm(sx, pack, pal);
   }
@@ -805,7 +805,7 @@ static NOINLINE void DrawAllSpritesInterlace(int pri, int sh)
     unsigned int *sprite;
     int code, sx, sy, height;
 
-    sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
+    sprite=(unsigned int *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite
 
     // get sprite info
     code = sprite[0];
@@ -908,7 +908,7 @@ static void DrawSpritesSHi(unsigned char *sprited, const struct PicoEState *est)
       if(sx<=0)   continue;
       if(sx>=328) break; // Offscreen
 
-      pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
+      pack = *(unsigned int *)(PicoMem.vram + (tile & 0x7fff));
       fTileFunc(sx, pack, pal);
     }
   }
@@ -982,7 +982,7 @@ static void DrawSpritesHiAS(unsigned char *sprited, int sh)
       if(sx<=0)   continue;
       if(sx>=328) break; // Offscreen
 
-      pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
+      pack = *(unsigned int *)(PicoMem.vram + (tile & 0x7fff));
       fTileFunc(sx, pack, pal);
     }
   }
@@ -1042,7 +1042,7 @@ static NOINLINE void PrepareSprites(int full)
       unsigned int *sprite;
       int code2, sx, sy, height;
 
-      sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
+      sprite=(unsigned int *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite
 
       // parse sprite info
       code2 = sprite[1];
@@ -1095,7 +1095,7 @@ found:;
       unsigned int *sprite;
       int code, code2, sx, sy, hv, height, width;
 
-      sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
+      sprite=(unsigned int *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite
 
       // parse sprite info
       code = sprite[0];
@@ -1219,7 +1219,7 @@ void PicoDoHighPal555(int sh, int line, struct PicoEState *est)
 
   Pico.m.dirtyPal = 0;
 
-  spal = (void *)Pico.cram;
+  spal = (void *)PicoMem.cram;
   dpal = (void *)est->HighPal;
 
   for (i = 0; i < 0x40 / 2; i++) {
@@ -1301,9 +1301,9 @@ static void FinalizeLine8bit(int sh, int line, struct PicoEState *est)
     rs |= PDRAW_SONIC_MODE;
     est->rendstatus = rs;
     if (dirty_count == 3) {
-      blockcpy(est->HighPal, Pico.cram, 0x40*2);
+      blockcpy(est->HighPal, PicoMem.cram, 0x40*2);
     } else if (dirty_count == 11) {
-      blockcpy(est->HighPal+0x40, Pico.cram, 0x40*2);
+      blockcpy(est->HighPal+0x40, PicoMem.cram, 0x40*2);
     }
   }
 
diff --git a/pico/draw2.c b/pico/draw2.c
index db155fa..f0e0518 100644
--- a/pico/draw2.c
+++ b/pico/draw2.c
@@ -25,7 +25,7 @@ static unsigned char PicoDraw2FB_[(8+320) * (8+240+8)];
 static int HighCache2A[41*(TILE_ROWS+1)+1+1]; // caches for high layers
 static int HighCache2B[41*(TILE_ROWS+1)+1+1];
 
-unsigned short *PicoCramHigh=Pico.cram; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)
+unsigned short *PicoCramHigh=PicoMem.cram; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)
 void (*PicoPrepareCram)()=0;            // prepares PicoCramHigh for renderer to use
 
 
@@ -46,7 +46,7 @@ static int TileXnormYnorm(unsigned char *pd,int addr,unsigned char pal)
 	int i;
 
 	for(i=8; i; i--, addr+=2, pd += LINE_WIDTH) {
-		pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+		pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
 		if(!pack) continue;
 
 		t=pack&0x0000f000; if (t) pd[0]=(unsigned char)((t>>12)|pal);
@@ -69,7 +69,7 @@ static int TileXflipYnorm(unsigned char *pd,int addr,unsigned char pal)
 	int i;
 
 	for(i=8; i; i--, addr+=2, pd += LINE_WIDTH) {
-		pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+		pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
 		if(!pack) continue;
 
 		t=pack&0x000f0000; if (t) pd[0]=(unsigned char)((t>>16)|pal);
@@ -92,7 +92,7 @@ static int TileXnormYflip(unsigned char *pd,int addr,unsigned char pal)
 
 	addr+=14;
 	for(i=8; i; i--, addr-=2, pd += LINE_WIDTH) {
-		pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+		pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
 		if(!pack) continue;
 
 		t=pack&0x0000f000; if (t) pd[0]=(unsigned char)((t>>12)|pal);
@@ -116,7 +116,7 @@ static int TileXflipYflip(unsigned char *pd,int addr,unsigned char pal)
 
 	addr+=14;
 	for(i=8; i; i--, addr-=2, pd += LINE_WIDTH) {
-		pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+		pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
 		if(!pack) continue;
 
 		t=pack&0x000f0000; if (t) pd[0]=(unsigned char)((t>>16)|pal);
@@ -161,7 +161,7 @@ static void DrawWindowFull(int start, int end, int prio, struct PicoEState *est)
 	nametab += nametab_step*start;
 
 	// check priority
-	code=Pico.vram[nametab+tile_start];
+	code=PicoMem.vram[nametab+tile_start];
 	if ((code>>15) != prio) return; // hack: just assume that whole window uses same priority
 
 	scrpos+=8*LINE_WIDTH+8;
@@ -175,7 +175,7 @@ static void DrawWindowFull(int start, int end, int prio, struct PicoEState *est)
 //			unsigned short *pal=NULL;
 			unsigned char pal;
 
-			code=Pico.vram[nametab+tilex];
+			code=PicoMem.vram[nametab+tilex];
 			if (code==blank) continue;
 
 			// Get tile address/2:
@@ -222,7 +222,7 @@ static void DrawLayerFull(int plane, int *hcache, int planestart, int planeend,
 
 	if(!(pvid->reg[11]&3)) { // full screen scroll
 		// Get horizontal scroll value
-		hscroll=Pico.vram[htab&0x7fff];
+		hscroll=PicoMem.vram[htab&0x7fff];
 		htab = 0; // this marks that we don't have to update scroll value
 	}
 
@@ -243,7 +243,7 @@ static void DrawLayerFull(int plane, int *hcache, int planestart, int planeend,
 	scrpos+=8*LINE_WIDTH*(planestart-START_ROW);
 
 	// Get vertical scroll value:
-	vscroll=Pico.vsram[plane]&0x1ff;
+	vscroll=PicoMem.vsram[plane]&0x1ff;
 	scrpos+=(8-(vscroll&7))*LINE_WIDTH;
 	if(vscroll&7) planeend++; // we have vertically clipped tiles due to vscroll, so we need 1 more row
 
@@ -262,7 +262,7 @@ static void DrawLayerFull(int plane, int *hcache, int planestart, int planeend,
 		if(htab) {
 			int htaddr=htab+(trow<<4);
 			if(trow) htaddr-=(vscroll&7)<<1;
-			hscroll=Pico.vram[htaddr&0x7fff];
+			hscroll=PicoMem.vram[htaddr&0x7fff];
 		}
 
 		// Draw tiles across screen:
@@ -276,7 +276,7 @@ static void DrawLayerFull(int plane, int *hcache, int planestart, int planeend,
 //			unsigned short *pal=NULL;
 			unsigned char pal;
 
-			code=Pico.vram[nametab_row+(tilex&xmask)];
+			code=PicoMem.vram[nametab_row+(tilex&xmask)];
 			if (code==blank) continue;
 
 			if (code>>15) { // high priority tile
@@ -422,7 +422,7 @@ static void DrawAllSpritesFull(int prio, int maxwidth)
 		unsigned int *sprite=NULL;
 		int code, code2, sx, sy, height;
 
-		sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
+		sprite=(unsigned int *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite
 
 		// get sprite info
 		code = sprite[0];
diff --git a/pico/draw2_arm.S b/pico/draw2_arm.S
index 6e7e1ac..1575653 100644
--- a/pico/draw2_arm.S
+++ b/pico/draw2_arm.S
@@ -353,10 +353,10 @@ DrawLayerFull:
 
     mov     r6, r1        @ hcache
 
-    ldr     r11, [r12, #OFS_Pico_video]
-    ldr     r10, [r12, #OFS_Pico_vram]
-    ldrb    r5, [r11, #13]        @ pvid->reg[13]
-    ldrb    r7, [r11, #11]
+    ldr     r11, [r12, #OFS_EST_Pico]
+    ldr     r10, [r12, #OFS_EST_PicoMem_vram]
+    ldrb    r5, [r11, #OFS_Pico_video_reg+13] @ pvid->reg[13]
+    ldrb    r7, [r11, #OFS_Pico_video_reg+11]
 
     sub     lr, r3, r2
     and     lr, lr, #0x00ff0000   @ lr=cells
@@ -366,7 +366,7 @@ DrawLayerFull:
     bic     r5, r5, #0x00ff0000   @ just in case
 
     tst     r7, #3                @ full screen scroll? (if ==0)
-    ldrb    r7, [r11, #16]        @ ??hh??ww
+    ldrb    r7, [r11, #OFS_Pico_video_reg+16] @ ??hh??ww
     ldreqh  r5, [r10, r5]
     biceq   r5, r5, #0x0000fc00   @ r5=hscroll (0-0x3ff)
     movne   r5, r5, lsr #1
@@ -397,15 +397,15 @@ DrawLayerFull:
 
     @ Find name table:
     tst     r0, r0
-    ldreqb  r4, [r11, #2]
+    ldreqb  r4, [r11, #OFS_Pico_video_reg+2]
     moveq   r4, r4, lsr #3
-    ldrneb  r4, [r11, #4]
+    ldrneb  r4, [r11, #OFS_Pico_video_reg+4]
     and     r4, r4, #7
     orr     lr, lr, r4, lsl #13   @ lr|=nametab_bits{3}<<13
 
     ldr     r11,[sp, #9*4]        @ est
     sub     r4, r9, #(START_ROW<<24)
-    ldr     r11, [r11, #OFS_Draw2FB]
+    ldr     r11, [r11, #OFS_EST_Draw2FB]
     mov     r4, r4, asr #24
     mov     r7, #328*8
     mla     r11, r4, r7, r11      @ scrpos+=8*328*(planestart-START_ROW);
@@ -582,13 +582,13 @@ DrawTilesFromCacheF:
     mov     r9, #0xff000000 @ r9=prevcode=-1
     mvn     r6, #0          @ r6=prevy=-1
 
-    ldr     r4, [r1, #OFS_Draw2FB]
+    ldr     r4, [r1, #OFS_EST_Draw2FB]
     ldr     r2, [r0], #4    @ read y offset
     mov     r7, #328
     mla     r2, r7, r2, r4
     sub     r12, r2, #(328*8*START_ROW) @ r12=scrpos
 
-    ldr     r10, [r1, #OFS_Pico_vram]
+    ldr     r10, [r1, #OFS_EST_PicoMem_vram]
     mov     r8, r0               @ hc
     mov     r0, #0xf
 
@@ -674,11 +674,11 @@ DrawTilesFromCacheF:
 DrawWindowFull:
     stmfd   sp!, {r4-r11,lr}
 
-    ldr     r11, [r3, #OFS_Pico_video]
-    ldrb    r12, [r11, #3]        @ pvid->reg[3]
+    ldr     r11, [r3, #OFS_EST_Pico]
+    ldrb    r12, [r11, #OFS_Pico_video_reg+3] @ pvid->reg[3]
     mov     r12, r12, lsl #10
 
-    ldr     r4, [r11, #12]
+    ldr     r4, [r11, #OFS_Pico_video_reg+12]
     mov     r5, #1                @ nametab_step
     tst     r4, #1                @ 40 cell mode?
     andne   r12, r12, #0xf000     @ 0x3c<<10
@@ -689,7 +689,7 @@ DrawWindowFull:
     and     r4, r0, #0xff
     mla     r12, r5, r4, r12      @ nametab += nametab_step*start;
 
-    ldr     r10, [r3, #OFS_Pico_vram]
+    ldr     r10, [r3, #OFS_EST_PicoMem_vram]
     mov     r4, r0, lsr #16       @ r4=start_cell_h
     add     r7, r12, r4, lsl #1
 
@@ -707,7 +707,7 @@ DrawWindowFull:
 
     mov     r9, #0xff000000       @ r9=prevcode=-1
 
-    ldr     r11, [r3, #OFS_Draw2FB]
+    ldr     r11, [r3, #OFS_EST_Draw2FB]
     and     r4, r0, #0xff
     add     r11, r11, #328*8
     sub     r4, r4, #START_ROW
@@ -760,7 +760,8 @@ DrawWindowFull:
     tst     r9, #0x080000       @ hflip?
     bne     .dwf_hflip
 
-    @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=Pico.vram) r2,r4,r7: scratch, r0=0xf
+    @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=PicoMem.vram)
+    @ r2,r4,r7: scratch, r0=0xf
     Tile 0, 0
     b       .dwfloop
 
@@ -870,7 +871,8 @@ DrawWindowFull:
     cmp     r6, #(END_ROW*8+8)
     bge     52b
 
-    @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=Pico.vram) r2,r4,r7: scratch, r0=0xf
+    @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=PicoMem.vram)
+    @ r2,r4,r7: scratch, r0=0xf
     Tile \hflip, \vflip
     b       52b
 .endm
@@ -905,8 +907,8 @@ DrawSpriteFull:
     and     r3, lr, #0x6000
     mov     r3, r3, lsr #9  @ r3=pal=((code>>9)&0x30);
 
-    ldr     r11, [r1, #OFS_Draw2FB]
-    ldr     r10, [r1, #OFS_Pico_vram]
+    ldr     r11, [r1, #OFS_EST_Draw2FB]
+    ldr     r10, [r1, #OFS_EST_PicoMem_vram]
     sub     r1, r12, #(START_ROW*8)
     mov     r0, #328
     mla     r11, r1, r0, r11      @ scrpos+=(sy-START_ROW*8)*328;
diff --git a/pico/draw_arm.S b/pico/draw_arm.S
index fae07b8..d53e04b 100644
--- a/pico/draw_arm.S
+++ b/pico/draw_arm.S
@@ -287,10 +287,10 @@ DrawLayer:
     ldr     r12, [sp]             @ est
     stmfd   sp!, {r4-r11,lr}
 
-    ldr     r11, [r12, #OFS_Pico_video]
+    ldr     r11, [r12, #OFS_EST_Pico]
     mov     r8, #1
 
-    ldrb    r7, [r11, #16]        @ ??vv??hh
+    ldrb    r7, [r11, #OFS_Pico_video_reg+16] @ ??vv??hh
 
     mov     r6, r1                @ hcache
     orr     r9, r3, r0, lsl #29   @ r9=force[31]|sh[30]|plane[29]
@@ -311,13 +311,13 @@ DrawLayer:
     cmp     r10, #7
     subge   r10, r10, #1          @ r10=shift[width] (5,6,6,7)
 
-    ldr     r2, [r12, #OFS_DrawScanline]
-    ldr     lr, [r12, #OFS_Pico_vram]
+    ldr     r2, [r12, #OFS_EST_DrawScanline]
+    ldr     lr, [r12, #OFS_EST_PicoMem_vram]
 
     @ Find name table:
     ands    r0,  r0, #1
-    ldreqb  r12, [r11, #2]
-    ldrneb  r12, [r11, #4]
+    ldreqb  r12, [r11, #OFS_Pico_video_reg+2]
+    ldrneb  r12, [r11, #OFS_Pico_video_reg+4]
 
     @ calculate xmask:
     mov     r5, r8, lsl r10
@@ -327,8 +327,8 @@ DrawLayer:
     movne   r12, r12, lsl #13
     and     r12, r12, #(7<<13)    @ r12=(ts->nametab<<1) (halfword compliant)
 
-    ldrh    r8, [r11, #12]
-    ldrb    r7, [r11, #11]
+    ldrh    r8, [r11, #OFS_Pico_video_reg+12]
+    ldrb    r7, [r11, #OFS_Pico_video_reg+11]
 
     mov     r4, r8, lsr #8        @ pvid->reg[13]
     mov     r4, r4, lsl #10       @ htab=pvid->reg[13]<<9; (halfwords)
@@ -345,7 +345,7 @@ DrawLayer:
 
     @ Get vertical scroll value:
     add     r7, lr,  #0x012000
-    add     r7, r7,  #0x000180    @ r7=Pico.vsram (Pico+0x22180)
+    add     r7, r7,  #0x000180    @ r7=PicoMem.vsram (PicoMem+0x22180)
     ldr     r7, [r7]
 
     tst     r8, #2
@@ -392,7 +392,7 @@ DrawLayer:
     @ cache some stuff to avoid mem access
     ldr     r11,[sp, #9*4]       @ est
     mov     r0, #0xf
-    ldr     r11,[r11, #OFS_HighCol]
+    ldr     r11,[r11, #OFS_EST_HighCol]
 
     mvn     r9, #0               @ r9=prevcode=-1
     add     r1, r11, r7          @ r1=pdest
@@ -497,10 +497,10 @@ DrawLayer:
     tst     r10, #1<<21 @ seen non hi-prio tile
     ldr     r1, [sp, #9*4]  @ est
     mov     r0, #0
-    ldreq   r2, [r1, #OFS_rendstatus]
+    ldreq   r2, [r1, #OFS_EST_rendstatus]
     str     r0, [r6]    @ terminate the cache list
     orreq   r2, r2, #PDRAW_PLANE_HI_PRIO @ had a layer with all hi-prio tiles
-    streq   r2, [r1, #OFS_rendstatus]
+    streq   r2, [r1, #OFS_EST_rendstatus]
 
     ldmfd   sp!, {r4-r11,lr}
     bx      lr
@@ -515,7 +515,7 @@ DrawLayer:
 
     ldr     r11, [sp, #9*4]       @ est
     orr     r5, r1, r10, lsl #24
-    ldr     r4, [r11, #OFS_DrawScanline]
+    ldr     r4, [r11, #OFS_EST_DrawScanline]
     sub     r1, r3, #1
     orr     r5, r5, r4, lsl #16   @ r5=(shift_width[31:24]|scanline[23:16]|ymask[15:0])
     and     r1, r1, #7
@@ -541,7 +541,7 @@ DrawLayer:
     @ cache some stuff to avoid mem access
     ldr     r11,[sp, #9*4]       @ est
     mov     r0, #0xf
-    ldr     r11,[r11, #OFS_HighCol]
+    ldr     r11,[r11, #OFS_EST_HighCol]
 
     mvn     r9, #0               @ r9=prevcode=-1
     add     r1, r11, r7          @ r1=pdest
@@ -557,7 +557,7 @@ DrawLayer:
 
     @ calc offset and read tileline code to r7, also calc ty
     add     r7, lr, #0x012000
-    add     r7, r7, #0x000180     @ r7=Pico.vsram (Pico+0x22180)
+    add     r7, r7, #0x000180     @ r7=PicoMem.vsram (PicoMem+0x22180)
     add     r7, r7, r10,asr #23   @ vsram + ((cell&~1)<<1)
     bic     r7, r7, #3
     tst     r10,#0x8000           @ plane1?
@@ -576,7 +576,7 @@ DrawLayer:
     mov     r4, r4, lsl r7        @ nametabadd
 
     and     r7, r8, r8, lsr #25
-    add     r7, lr, r7, lsl #1    @ Pico.vram+((tilex&ts->xmask) as halfwords)
+    add     r7, lr, r7, lsl #1    @ PicoMem.vram+((tilex&ts->xmask) as halfwords)
     add     r7, r7, r4, lsl #1
     ldrh    r7, [r7, r12]         @ r7=code (int, but from unsigned, no sign extend)
 
@@ -598,7 +598,7 @@ DrawLayer:
     mov     r2, r2, lsr #17
     eorcs   r2, r2, #0x0e   @ if (code&0x1000) addr^=0xe;
 
-    ldr     r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+    ldr     r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
 
     bic     r7, r3, #0x3f
     and     r3, r9, #0x6000
@@ -656,7 +656,7 @@ DrawLayer:
     add     r2, r2, r10, lsl #17
     mov     r2, r2, lsr #17
     eorcs   r2, r2, #0x0e   @ if (code&0x1000) addr^=0xe;
-    ldr     r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+    ldr     r2, [lr, r2, lsl #1] @ pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
     mov     r9, r7          @ remember code
     tst     r2, r2
     orrne   r10, r10, #1<<22
@@ -667,10 +667,10 @@ DrawLayer:
     tst     r8, #(1<<24) @ seen non hi-prio tile
     ldr     r1, [sp, #9*4]  @ est
     mov     r0, #0
-    ldreq   r2, [r1, #OFS_rendstatus]
+    ldreq   r2, [r1, #OFS_EST_rendstatus]
     str     r0, [r6]    @ terminate the cache list
     orreq   r2, r2, #PDRAW_PLANE_HI_PRIO @ had a layer with all hi-prio tiles
-    streq   r2, [r1, #OFS_rendstatus]
+    streq   r2, [r1, #OFS_EST_rendstatus]
 
     ldmfd   sp!, {r4-r11,lr}
     bx      lr
@@ -716,7 +716,7 @@ BackFill:
     stmfd   sp!, {r4-r9,lr}
 
     mov     r0, r0, lsl #26
-    ldr     lr, [r2, #OFS_HighCol]
+    ldr     lr, [r2, #OFS_EST_HighCol]
     mov     r0, r0, lsr #26
     add     lr, lr, #8
 
@@ -758,9 +758,9 @@ DrawTilesFromCache:
     stmfd   sp!, {r4-r9,r11,lr}
 
     @ cache some stuff to avoid mem access
-    ldr     r11,[r3, #OFS_HighCol]
+    ldr     r11,[r3, #OFS_EST_HighCol]
     mov     r12,#0xf
-    ldr     lr, [r3, #OFS_Pico_vram]
+    ldr     lr, [r3, #OFS_EST_PicoMem_vram]
     mov     r9, r3         @ est
 
     mvn     r5, #0         @ r5=prevcode=-1
@@ -892,14 +892,14 @@ DrawTilesFromCache:
 
 @ check if we have detected layer covered with hi-prio tiles:
 .dtfc_check_rendflags:
-    ldr     r2, [r9, #OFS_rendstatus]
+    ldr     r2, [r9, #OFS_EST_rendstatus]
     tst     r2, #(PDRAW_PLANE_HI_PRIO|PDRAW_SHHI_DONE)
     beq     .dtfc_loop
     bic     r8, r8, #1      @ sh/hi mode off
     tst     r2, #PDRAW_SHHI_DONE
     bne     .dtfc_loop      @ already processed
     orr     r2, r2, #PDRAW_SHHI_DONE
-    str     r2, [r9, #OFS_rendstatus]
+    str     r2, [r9, #OFS_EST_rendstatus]
 
     add     r1, r11,#8
     mov     r3, #320/4/4
@@ -939,16 +939,16 @@ DrawSpritesSHi:
     add     r10,r0, #3      @ r10=HighLnSpr end
     add     r10,r10,r3      @ r10=HighLnSpr end
 
-    ldr     r11,[r1, #OFS_HighCol]
+    ldr     r11,[r1, #OFS_EST_HighCol]
     mov     r12,#0xf
-    ldr     lr, [r1, #OFS_Pico_vram]
+    ldr     lr, [r1, #OFS_EST_PicoMem_vram]
 
 
 DrawSpriteSHi:
     @ draw next sprite
     ldrb    r0, [r10,#-1]!
     ldr     r7, [sp]        @ est
-    ldr     r1, [r7, #OFS_HighPreSpr]
+    ldr     r1, [r7, #OFS_EST_HighPreSpr]
     cmp     r0, #0xff
     ldmeqfd sp!, {r1,r4-r11,pc} @ end of list
     and     r0, r0, #0x7f
@@ -974,7 +974,7 @@ DrawSpriteSHi:
     mov     r5, r3, lsr #24
     and     r5, r5, #7      @ r5=height
 
-    ldr     r7, [r7, #OFS_DrawScanline]
+    ldr     r7, [r7, #OFS_EST_DrawScanline]
     mov     r0, r3, lsl #16 @ r4=sy<<16 (tmp)
 
     sub     r7, r7, r0, asr #16 @ r7=row=DrawScanline-sy
@@ -1015,7 +1015,7 @@ DrawSpriteSHi:
     mov     r8, r8, lsl #17
     mov     r8, r8, lsr #17    @ tile&=0x7fff; // Clip tile address
 
-    ldr     r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+    ldr     r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
     add     r1, r11, r0        @ r1=pdest
     tst     r2, r2
     beq     .dsprShi_loop
@@ -1117,9 +1117,9 @@ DrawAllSprites:
     add     r10,r0, #3
     add     r10,r10,r2      @ r10=HighLnSpr end
 
-    ldr     r11,[r3, #OFS_HighCol]
+    ldr     r11,[r3, #OFS_EST_HighCol]
     mov     r12,#0xf
-    ldr     lr, [r3, #OFS_Pico_vram]
+    ldr     lr, [r3, #OFS_EST_PicoMem_vram]
 
 @ + 0  :    hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: horiz. size
 @ + 4  :    xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
@@ -1134,12 +1134,12 @@ DrawSprite:
     ldmeqfd sp!, {r1,r3-r11,pc} @ end of list
     cmp     r2, r8, lsr #1
     bne     DrawSprite      @ wrong priority
-    ldr     r1, [r7, #OFS_HighPreSpr]
+    ldr     r1, [r7, #OFS_EST_HighPreSpr]
     and     r0, r0, #0x7f
     add     r0, r1, r0, lsl #3
 
     ldr     r3, [r0]        @ sprite[0]
-    ldr     r7, [r7, #OFS_DrawScanline]
+    ldr     r7, [r7, #OFS_EST_DrawScanline]
     mov     r6, r3, lsr #28
     sub     r6, r6, #1      @ r6=width-1 (inc later)
     mov     r5, r3, lsr #24
@@ -1198,7 +1198,7 @@ DrawSprite:
     mov     r8, r8, lsl #17
     mov     r8, r8, lsr #17    @ tile&=0x7fff; // Clip tile address
 
-    ldr     r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
+    ldr     r2, [lr, r8, lsl #1] @ pack=*(unsigned int *)(PicoMem.vram+addr); // Get 8 pixels
     add     r1, r11, r0        @ r1=pdest
     tst     r2, r2
     beq     .dspr_loop
@@ -1267,12 +1267,12 @@ DrawWindow:
     ldr     r12, [sp]             @ est
     stmfd   sp!, {r4-r11,lr}
 
-    ldr     r6,  [r12, #OFS_Pico_video]
-    ldr     r10, [r12, #OFS_DrawScanline]
+    ldr     r6,  [r12, #OFS_EST_Pico]
+    ldr     r10, [r12, #OFS_EST_DrawScanline]
     mov     r11, r12              @ est
-    ldrb    r12, [r6, #3]         @ pvid->reg[3]
+    ldrb    r12, [r6, #OFS_Pico_video_reg+3] @ pvid->reg[3]
 
-    ldr     r4,  [r6, #12]
+    ldr     r4,  [r6, #OFS_Pico_video_reg+12]
     mov     r5,  r10, lsr #3
     and     r10, r10, #7
     mov     r10, r10, lsl #1      @ r10=ty
@@ -1286,8 +1286,8 @@ DrawWindow:
     addeq   r12, r12, r5, lsl #6  @ nametab
     add     r12, r12, r0, lsl #2  @ +starttile
 
-    ldr     lr, [r11, #OFS_Pico_vram]
-    ldr     r6, [r11, #OFS_rendstatus]
+    ldr     lr, [r11, #OFS_EST_PicoMem_vram]
+    ldr     r6, [r11, #OFS_EST_rendstatus]
 
     @ fetch the first code now
     ldrh    r7, [lr, r12]
@@ -1304,7 +1304,7 @@ DrawWindow:
     sub     r8, r1, r0
 
     @ cache some stuff to avoid mem access
-    ldr     r11, [r11, #OFS_HighCol]
+    ldr     r11, [r11, #OFS_EST_HighCol]
     mov     r8, r8, lsl #1        @ cells
     add     r11,r11,#8
     mvn     r9, #0                @ r9=prevcode=-1
@@ -1392,9 +1392,9 @@ DrawWindow:
     and     r2, r6, #PDRAW_WND_DIFF_PRIO
     ldmfd   sp!, {r4-r11,lr}
     ldr     r0, [sp]
-    ldr     r1, [r0, #OFS_rendstatus]
+    ldr     r1, [r0, #OFS_EST_rendstatus]
     orr     r1, r1, r2
-    str     r1, [r0, #OFS_rendstatus]
+    str     r1, [r0, #OFS_EST_rendstatus]
 
     bx      lr
 
@@ -1486,17 +1486,17 @@ PicoDoHighPal555:
     stmfd   sp!, {r4-r10,lr}
     mov     r10,r2               @ est
     mov     r1, #0
-    ldr     r8, [r10, #OFS_Pico_video]
+    ldr     r8, [r10, #OFS_EST_Pico]
 
 PicoDoHighPal555_nopush:
     orr     r9, r1, r0, lsl #31  @ 0:called from FinalizeLine555, 31: s/h
 
-    add     r0, r10, #OFS_HighPal
+    add     r0, r10, #OFS_EST_HighPal
 
     mov     r1, #0
-    strb    r1, [r8, #-0x1a]     @ 0x2220e ~ dirtyPal
+    strb    r1, [r8, #OFS_Pico_m_dirtyPal]
 
-    sub     r1, r8, #0x128       @ r1=Pico.cram
+    ldr     r1, [r10, #OFS_EST_PicoMem_cram]
     mov     r2, #0x40
     mov     r8,     #0x0061
     orr     r8, r8, #0x0800
@@ -1507,7 +1507,7 @@ PicoDoHighPal555_nopush:
     tst     r9, #(1<<31)
     beq     PicoDoHighPal555_end
 
-    add     r3, r10, #OFS_HighPal
+    add     r3, r10, #OFS_EST_HighPal
 
     @ shadowed pixels:
     mov     r12,    #0x008e
@@ -1550,7 +1550,7 @@ PicoDoHighPal555_end:
     tst     r9, #1
     ldmeqfd sp!, {r4-r10,pc}
 
-    ldr     r8, [r10, #OFS_Pico_video]
+    ldr     r8, [r10, #OFS_EST_Pico]
     b       FinalizeLineRGB555_pal_done
 
 
@@ -1561,33 +1561,33 @@ PicoDoHighPal555_end:
 FinalizeLine555:
     stmfd   sp!, {r4-r10,lr}
     mov     r10,r2               @ est
-    ldr     r8, [r10, #OFS_Pico_video]
+    ldr     r8, [r10, #OFS_EST_Pico]
 
-    ldrb    r2, [r8, #-0x1a]     @ 0x2220e ~ dirtyPal
+    ldrb    r2, [r8, #OFS_Pico_m_dirtyPal]
     mov     r1, #1
     tst     r2, r2
     bne     PicoDoHighPal555_nopush
 
 FinalizeLineRGB555_pal_done:
-    add     r3, r10, #OFS_HighPal
+    add     r3, r10, #OFS_EST_HighPal
 
-    ldr     r12, [r10, #OFS_rendstatus]
+    ldr     r12, [r10, #OFS_EST_rendstatus]
     eors    r0, r0, #1           @ sh is 0
     mov     lr, #0xff
     tstne   r12,#PDRAW_ACC_SPRITES
     movne   lr, #0x3f
 
-    ldr     r1, [r10, #OFS_HighCol]
-    ldr     r0, [r10, #OFS_DrawLineDest]
+    ldr     r1, [r10, #OFS_EST_HighCol]
+    ldr     r0, [r10, #OFS_EST_DrawLineDest]
     add     r1, r1, #8
 
-    ldrb    r12, [r8, #12]
+    ldrb    r12, [r8, #OFS_Pico_video_reg+12]
     mov     lr, lr, lsl #1
 
     tst     r12, #1
     movne   r2, #320/8           @ len
     bne     .fl_no32colRGB555
-    ldr     r4, [r10, #OFS_PicoOpt]
+    ldr     r4, [r10, #OFS_EST_PicoOpt]
     mov     r2, #256/8
     ldr     r4, [r4]
     tst     r4, #0x4000
diff --git a/pico/eeprom.c b/pico/eeprom.c
index 16f6c05..d727766 100644
--- a/pico/eeprom.c
+++ b/pico/eeprom.c
@@ -42,14 +42,14 @@ static void EEPROM_write_do(unsigned int d) // ???? ??la (l=SCL, a=SDA)
   {
     // we are started and SCL went high - next cycle
     scyc++; // pre-increment
-    if(SRam.eeprom_type) {
+    if(Pico.sv.eeprom_type) {
       // X24C02+
       if((ssa&1) && scyc == 18) {
         scyc = 9;
         saddr++; // next address in read mode
-        /*if(SRam.eeprom_type==2) saddr&=0xff; else*/ saddr&=0x1fff; // mask
+        /*if(Pico.sv.eeprom_type==2) saddr&=0xff; else*/ saddr&=0x1fff; // mask
       }
-      else if(SRam.eeprom_type == 2 && scyc == 27) scyc = 18;
+      else if(Pico.sv.eeprom_type == 2 && scyc == 27) scyc = 18;
       else if(scyc == 36) scyc = 27;
     } else {
       // X24C01
@@ -63,29 +63,29 @@ static void EEPROM_write_do(unsigned int d) // ???? ??la (l=SCL, a=SDA)
   else if((sreg & 8) && (sreg & 2) && !(d&2))
   {
     // we are started and SCL went low (falling edge)
-    if(SRam.eeprom_type) {
+    if(Pico.sv.eeprom_type) {
       // X24C02+
       if(scyc == 9 || scyc == 18 || scyc == 27); // ACK cycles
-      else if( (SRam.eeprom_type == 3 && scyc > 27) || (SRam.eeprom_type == 2 && scyc > 18) ) {
+      else if( (Pico.sv.eeprom_type == 3 && scyc > 27) || (Pico.sv.eeprom_type == 2 && scyc > 18) ) {
         if(!(ssa&1)) {
           // data write
-          unsigned char *pm=SRam.data+saddr;
+          unsigned char *pm=Pico.sv.data+saddr;
           *pm <<= 1; *pm |= d&1;
           if(scyc == 26 || scyc == 35) {
             saddr=(saddr&~0xf)|((saddr+1)&0xf); // only 4 (?) lowest bits are incremented
             elprintf(EL_EEPROM, "eeprom: write done, addr inc to: %x, last byte=%02x", saddr, *pm);
           }
-          SRam.changed = 1;
+          Pico.sv.changed = 1;
         }
       } else if(scyc > 9) {
         if(!(ssa&1)) {
           // we latch another addr bit
           saddr<<=1;
-          if(SRam.eeprom_type == 2) saddr&=0xff; else saddr&=0x1fff; // mask
+          if(Pico.sv.eeprom_type == 2) saddr&=0xff; else saddr&=0x1fff; // mask
           saddr|=d&1;
           if(scyc==17||scyc==26) {
             elprintf(EL_EEPROM, "eeprom: addr reg done: %x", saddr);
-            if(scyc==17&&SRam.eeprom_type==2) { saddr&=0xff; saddr|=(ssa<<7)&0x700; } // add device bits too
+            if(scyc==17&&Pico.sv.eeprom_type==2) { saddr&=0xff; saddr|=(ssa<<7)&0x700; } // add device bits too
           }
         }
       } else {
@@ -99,13 +99,13 @@ static void EEPROM_write_do(unsigned int d) // ???? ??la (l=SCL, a=SDA)
       else if(scyc > 9) {
         if(!(saddr&1)) {
           // data write
-          unsigned char *pm=SRam.data+(saddr>>1);
+          unsigned char *pm=Pico.sv.data+(saddr>>1);
           *pm <<= 1; *pm |= d&1;
           if(scyc == 17) {
             saddr=(saddr&0xf9)|((saddr+2)&6); // only 2 lowest bits are incremented
             elprintf(EL_EEPROM, "eeprom: write done, addr inc to: %x, last byte=%02x", saddr>>1, *pm);
           }
-          SRam.changed = 1;
+          Pico.sv.changed = 1;
         }
       } else {
         // we latch another addr bit
@@ -129,11 +129,11 @@ static void EEPROM_upd_pending(unsigned int d)
   sreg &= ~0xc0;
 
   // SCL
-  d1 = (d >> SRam.eeprom_bit_cl) & 1;
+  d1 = (d >> Pico.sv.eeprom_bit_cl) & 1;
   sreg |= d1 << 7;
 
   // SDA in
-  d1 = (d >> SRam.eeprom_bit_in) & 1;
+  d1 = (d >> Pico.sv.eeprom_bit_in) & 1;
   sreg |= d1 << 6;
 
   Pico.m.eeprom_status = (unsigned char) sreg;
@@ -190,23 +190,23 @@ unsigned int EEPROM_read(void)
   } else if (scyc > 9 && scyc < 18) {
     // started and first command word received
     shift = 17-scyc;
-    if (SRam.eeprom_type) {
+    if (Pico.sv.eeprom_type) {
       // X24C02+
       if (ssa&1) {
         elprintf(EL_EEPROM, "eeprom: read: addr %02x, cycle %i, reg %02x", saddr, scyc, sreg);
-	if (shift==0) elprintf(EL_EEPROM, "eeprom: read done, byte %02x", SRam.data[saddr]);
-        d = (SRam.data[saddr]>>shift)&1;
+	if (shift==0) elprintf(EL_EEPROM, "eeprom: read done, byte %02x", Pico.sv.data[saddr]);
+        d = (Pico.sv.data[saddr]>>shift)&1;
       }
     } else {
       // X24C01
       if (saddr&1) {
         elprintf(EL_EEPROM, "eeprom: read: addr %02x, cycle %i, reg %02x", saddr>>1, scyc, sreg);
-	if (shift==0) elprintf(EL_EEPROM, "eeprom: read done, byte %02x", SRam.data[saddr>>1]);
-        d = (SRam.data[saddr>>1]>>shift)&1;
+	if (shift==0) elprintf(EL_EEPROM, "eeprom: read done, byte %02x", Pico.sv.data[saddr>>1]);
+        d = (Pico.sv.data[saddr>>1]>>shift)&1;
       }
     }
   }
 
-  return (d << SRam.eeprom_bit_out);
+  return (d << Pico.sv.eeprom_bit_out);
 }
 
diff --git a/pico/memory.c b/pico/memory.c
index 436f545..e747552 100644
--- a/pico/memory.c
+++ b/pico/memory.c
@@ -265,8 +265,8 @@ static port_read_func *port_readers[3] = {
 
 static NOINLINE u32 port_read(int i)
 {
-  u32 data_reg = Pico.ioports[i + 1];
-  u32 ctrl_reg = Pico.ioports[i + 4] | 0x80;
+  u32 data_reg = PicoMem.ioports[i + 1];
+  u32 ctrl_reg = PicoMem.ioports[i + 4] | 0x80;
   u32 in, out;
 
   out = data_reg & ctrl_reg;
@@ -310,7 +310,7 @@ NOINLINE u32 io_ports_read(u32 a)
     case 1:  d = port_read(0); break;
     case 2:  d = port_read(1); break;
     case 3:  d = port_read(2); break;
-    default: d = Pico.ioports[a]; break; // IO ports can be used as RAM
+    default: d = PicoMem.ioports[a]; break; // IO ports can be used as RAM
   }
   return d;
 }
@@ -323,17 +323,17 @@ NOINLINE void io_ports_write(u32 a, u32 d)
   if (1 <= a && a <= 2)
   {
     Pico.m.padDelay[a - 1] = 0;
-    if (!(Pico.ioports[a] & 0x40) && (d & 0x40))
+    if (!(PicoMem.ioports[a] & 0x40) && (d & 0x40))
       Pico.m.padTHPhase[a - 1]++;
   }
 
   // certain IO ports can be used as RAM
-  Pico.ioports[a] = d;
+  PicoMem.ioports[a] = d;
 }
 
 static int z80_cycles_from_68k(void)
 {
-  int m68k_cnt = SekCyclesDone() - timing.m68c_frame_start;
+  int m68k_cnt = SekCyclesDone() - Pico.t.m68c_frame_start;
   return cycles_68k_to_z80(m68k_cnt);
 }
 
@@ -345,7 +345,7 @@ void NOINLINE ctl_write_z80busreq(u32 d)
   {
     if (d)
     {
-      timing.z80c_cnt = z80_cycles_from_68k() + 2;
+      Pico.t.z80c_cnt = z80_cycles_from_68k() + 2;
     }
     else
     {
@@ -377,7 +377,7 @@ void NOINLINE ctl_write_z80reset(u32 d)
     }
     else
     {
-      timing.z80c_cnt = z80_cycles_from_68k() + 2;
+      Pico.t.z80c_cnt = z80_cycles_from_68k() + 2;
       z80_reset();
     }
     Pico.m.z80_reset = d;
@@ -414,14 +414,14 @@ static void psg_write_z80(u32 d)
 static u32 PicoRead8_sram(u32 a)
 {
   u32 d;
-  if (SRam.start <= a && a <= SRam.end && (Pico.m.sram_reg & SRR_MAPPED))
+  if (Pico.sv.start <= a && a <= Pico.sv.end && (Pico.m.sram_reg & SRR_MAPPED))
   {
-    if (SRam.flags & SRF_EEPROM) {
+    if (Pico.sv.flags & SRF_EEPROM) {
       d = EEPROM_read();
       if (!(a & 1))
         d >>= 8;
     } else
-      d = *(u8 *)(SRam.data - SRam.start + a);
+      d = *(u8 *)(Pico.sv.data - Pico.sv.start + a);
     elprintf(EL_SRAMIO, "sram r8  [%06x]   %02x @ %06x", a, d, SekPc);
     return d;
   }
@@ -436,12 +436,12 @@ static u32 PicoRead8_sram(u32 a)
 static u32 PicoRead16_sram(u32 a)
 {
   u32 d;
-  if (SRam.start <= a && a <= SRam.end && (Pico.m.sram_reg & SRR_MAPPED))
+  if (Pico.sv.start <= a && a <= Pico.sv.end && (Pico.m.sram_reg & SRR_MAPPED))
   {
-    if (SRam.flags & SRF_EEPROM)
+    if (Pico.sv.flags & SRF_EEPROM)
       d = EEPROM_read();
     else {
-      u8 *pm = (u8 *)(SRam.data - SRam.start + a);
+      u8 *pm = (u8 *)(Pico.sv.data - Pico.sv.start + a);
       d  = pm[0] << 8;
       d |= pm[1];
     }
@@ -459,20 +459,20 @@ static u32 PicoRead16_sram(u32 a)
 
 static void PicoWrite8_sram(u32 a, u32 d)
 {
-  if (a > SRam.end || a < SRam.start || !(Pico.m.sram_reg & SRR_MAPPED)) {
+  if (a > Pico.sv.end || a < Pico.sv.start || !(Pico.m.sram_reg & SRR_MAPPED)) {
     m68k_unmapped_write8(a, d);
     return;
   }
 
   elprintf(EL_SRAMIO, "sram w8  [%06x]   %02x @ %06x", a, d & 0xff, SekPc);
-  if (SRam.flags & SRF_EEPROM)
+  if (Pico.sv.flags & SRF_EEPROM)
   {
     EEPROM_write8(a, d);
   }
   else {
-    u8 *pm = (u8 *)(SRam.data - SRam.start + a);
+    u8 *pm = (u8 *)(Pico.sv.data - Pico.sv.start + a);
     if (*pm != (u8)d) {
-      SRam.changed = 1;
+      Pico.sv.changed = 1;
       *pm = (u8)d;
     }
   }
@@ -480,24 +480,24 @@ static void PicoWrite8_sram(u32 a, u32 d)
 
 static void PicoWrite16_sram(u32 a, u32 d)
 {
-  if (a > SRam.end || a < SRam.start || !(Pico.m.sram_reg & SRR_MAPPED)) {
+  if (a > Pico.sv.end || a < Pico.sv.start || !(Pico.m.sram_reg & SRR_MAPPED)) {
     m68k_unmapped_write16(a, d);
     return;
   }
 
   elprintf(EL_SRAMIO, "sram w16 [%06x] %04x @ %06x", a, d & 0xffff, SekPc);
-  if (SRam.flags & SRF_EEPROM)
+  if (Pico.sv.flags & SRF_EEPROM)
   {
     EEPROM_write16(d);
   }
   else {
-    u8 *pm = (u8 *)(SRam.data - SRam.start + a);
+    u8 *pm = (u8 *)(Pico.sv.data - Pico.sv.start + a);
     if (pm[0] != (u8)(d >> 8)) {
-      SRam.changed = 1;
+      Pico.sv.changed = 1;
       pm[0] = (u8)(d >> 8);
     }
     if (pm[1] != (u8)d) {
-      SRam.changed = 1;
+      Pico.sv.changed = 1;
       pm[1] = (u8)d;
     }
   }
@@ -515,7 +515,7 @@ static u32 PicoRead8_z80(u32 a)
   }
 
   if ((a & 0x4000) == 0x0000)
-    d = Pico.zram[a & 0x1fff];
+    d = PicoMem.zram[a & 0x1fff];
   else if ((a & 0x6000) == 0x4000) // 0x4000-0x5fff
     d = ym2612_read_local_68k(); 
   else
@@ -538,7 +538,7 @@ static void PicoWrite8_z80(u32 a, u32 d)
   }
 
   if ((a & 0x4000) == 0x0000) { // z80 RAM
-    Pico.zram[a & 0x1fff] = (u8)d;
+    PicoMem.zram[a & 0x1fff] = (u8)d;
     return;
   }
   if ((a & 0x6000) == 0x4000) { // FM Sound
@@ -765,7 +765,7 @@ static void m68k_mem_setup(void);
 
 PICO_INTERNAL void PicoMemSetup(void)
 {
-  int mask, rs, a;
+  int mask, rs, sstart, a;
 
   // setup the memory map
   cpu68k_map_set(m68k_read8_map,   0x000000, 0xffffff, m68k_unmapped_read8, 1);
@@ -781,15 +781,16 @@ PICO_INTERNAL void PicoMemSetup(void)
   cpu68k_map_set(m68k_read16_map, 0x000000, rs - 1, Pico.rom, 0);
 
   // Common case of on-cart (save) RAM, usually at 0x200000-...
-  if ((SRam.flags & SRF_ENABLED) && SRam.data != NULL) {
-    rs = SRam.end - SRam.start;
+  if ((Pico.sv.flags & SRF_ENABLED) && Pico.sv.data != NULL) {
+    sstart = Pico.sv.start;
+    rs = Pico.sv.end - sstart;
     rs = (rs + mask) & ~mask;
-    if (SRam.start + rs >= 0x1000000)
-      rs = 0x1000000 - SRam.start;
-    cpu68k_map_set(m68k_read8_map,   SRam.start, SRam.start + rs - 1, PicoRead8_sram, 1);
-    cpu68k_map_set(m68k_read16_map,  SRam.start, SRam.start + rs - 1, PicoRead16_sram, 1);
-    cpu68k_map_set(m68k_write8_map,  SRam.start, SRam.start + rs - 1, PicoWrite8_sram, 1);
-    cpu68k_map_set(m68k_write16_map, SRam.start, SRam.start + rs - 1, PicoWrite16_sram, 1);
+    if (sstart + rs >= 0x1000000)
+      rs = 0x1000000 - sstart;
+    cpu68k_map_set(m68k_read8_map,   sstart, sstart + rs - 1, PicoRead8_sram, 1);
+    cpu68k_map_set(m68k_read16_map,  sstart, sstart + rs - 1, PicoRead16_sram, 1);
+    cpu68k_map_set(m68k_write8_map,  sstart, sstart + rs - 1, PicoWrite8_sram, 1);
+    cpu68k_map_set(m68k_write16_map, sstart, sstart + rs - 1, PicoWrite16_sram, 1);
   }
 
   // Z80 region
@@ -816,10 +817,10 @@ PICO_INTERNAL void PicoMemSetup(void)
 
   // RAM and it's mirrors
   for (a = 0xe00000; a < 0x1000000; a += 0x010000) {
-    cpu68k_map_set(m68k_read8_map,   a, a + 0xffff, Pico.ram, 0);
-    cpu68k_map_set(m68k_read16_map,  a, a + 0xffff, Pico.ram, 0);
-    cpu68k_map_set(m68k_write8_map,  a, a + 0xffff, Pico.ram, 0);
-    cpu68k_map_set(m68k_write16_map, a, a + 0xffff, Pico.ram, 0);
+    cpu68k_map_set(m68k_read8_map,   a, a + 0xffff, PicoMem.ram, 0);
+    cpu68k_map_set(m68k_read16_map,  a, a + 0xffff, PicoMem.ram, 0);
+    cpu68k_map_set(m68k_write8_map,  a, a + 0xffff, PicoMem.ram, 0);
+    cpu68k_map_set(m68k_write16_map, a, a + 0xffff, PicoMem.ram, 0);
   }
 
   // Setup memory callbacks:
@@ -896,10 +897,10 @@ static int get_scanline(int is_from_z80)
 {
   if (is_from_z80) {
     int mclk_z80 = z80_cyclesDone() * 15;
-    int mclk_line = timing.z80_scanline * 488 * 7;
+    int mclk_line = Pico.t.z80_scanline * 488 * 7;
     while (mclk_z80 - mclk_line >= 488 * 7)
-      timing.z80_scanline++, mclk_line += 488 * 7;
-    return timing.z80_scanline;
+      Pico.t.z80_scanline++, mclk_line += 488 * 7;
+    return Pico.t.z80_scanline;
   }
 
   return Pico.m.scanline;
@@ -1282,14 +1283,14 @@ static void z80_md_out(unsigned short p, unsigned char d)
 
 static void z80_mem_setup(void)
 {
-  z80_map_set(z80_read_map, 0x0000, 0x1fff, Pico.zram, 0);
-  z80_map_set(z80_read_map, 0x2000, 0x3fff, Pico.zram, 0);
+  z80_map_set(z80_read_map, 0x0000, 0x1fff, PicoMem.zram, 0);
+  z80_map_set(z80_read_map, 0x2000, 0x3fff, PicoMem.zram, 0);
   z80_map_set(z80_read_map, 0x4000, 0x5fff, ym2612_read_local_z80, 1);
   z80_map_set(z80_read_map, 0x6000, 0x7fff, z80_md_vdp_read, 1);
   z80_map_set(z80_read_map, 0x8000, 0xffff, z80_md_bank_read, 1);
 
-  z80_map_set(z80_write_map, 0x0000, 0x1fff, Pico.zram, 0);
-  z80_map_set(z80_write_map, 0x2000, 0x3fff, Pico.zram, 0);
+  z80_map_set(z80_write_map, 0x0000, 0x1fff, PicoMem.zram, 0);
+  z80_map_set(z80_write_map, 0x2000, 0x3fff, PicoMem.zram, 0);
   z80_map_set(z80_write_map, 0x4000, 0x5fff, z80_md_ym2612_write, 1);
   z80_map_set(z80_write_map, 0x6000, 0x7fff, z80_md_vdp_br_write, 1);
   z80_map_set(z80_write_map, 0x8000, 0xffff, z80_md_bank_write, 1);
@@ -1299,8 +1300,8 @@ static void z80_mem_setup(void)
   drZ80.z80_out = z80_md_out;
 #endif
 #ifdef _USE_CZ80
-  Cz80_Set_Fetch(&CZ80, 0x0000, 0x1fff, (FPTR)Pico.zram); // main RAM
-  Cz80_Set_Fetch(&CZ80, 0x2000, 0x3fff, (FPTR)Pico.zram); // mirror
+  Cz80_Set_Fetch(&CZ80, 0x0000, 0x1fff, (FPTR)PicoMem.zram); // main RAM
+  Cz80_Set_Fetch(&CZ80, 0x2000, 0x3fff, (FPTR)PicoMem.zram); // mirror
   Cz80_Set_INPort(&CZ80, z80_md_in);
   Cz80_Set_OUTPort(&CZ80, z80_md_out);
 #endif
diff --git a/pico/memory_amips.s b/pico/memory_amips.S
similarity index 93%
rename from pico/memory_amips.s
rename to pico/memory_amips.S
index b11c2e2..7ae2592 100644
--- a/pico/memory_amips.s
+++ b/pico/memory_amips.S
@@ -8,6 +8,8 @@
 
 # OUT OF DATE
 
+#include "pico_int_o32.h"
+
 .set noreorder
 .set noat
 
@@ -184,8 +186,8 @@ m_read32_table:
 
 
 PicoMemReset:
-    lui     $v1, %hi(Pico+0x22204)
-    lw      $v1, %lo(Pico+0x22204)($v1)  # romsize
+    lui     $v1, %hi(Pico+OFS_Pico_romsize)
+    lw      $v1, %lo(Pico+OFS_Pico_romsize)($v1)  # romsize
     lui     $t0, 8
     addu    $v1, $t0
     addiu   $v1, -1
@@ -235,12 +237,11 @@ m_read_neg1:
     jr      $ra
     addiu   $v0, $0, 0xffff
 
-# loads &Pico.rom to $t3
+# loads &Pico to $t3
 .macro m_read_rom_try_sram is200000 size
-    lui     $t2, %hi(SRam)
-    addiu   $t2, %lo(SRam)
-    lui     $t3, %hi(Pico+0x22200)
-    lw      $t1, 8($t2)     # SRam.end
+    lui     $t2, %hi(Pico)
+    addiu   $t2, %lo(Pico)
+    lw      $t1, OFS_Pico_sv_end($t2)
 .if \is200000
     ins     $a0, $0,  19, 13
     lui     $t4, 0x20
@@ -248,12 +249,11 @@ m_read_neg1:
 .endif
     subu    $t4, $a0, $t1
     bgtz    $t4, 1f
-    addiu   $t3, %lo(Pico+0x22200)
-    lw      $t1, 4($t2)     # SRam.start
+    lw      $t1, OFS_Pico_sv_start($t2)
     subu    $t4, $t1, $a0
     bgtz    $t4, 1f
     nop
-    lb      $t1, 0x11($t3)  # Pico.m.sram_reg
+    lb      $t1, OFS_Pico_m_sram_reg($t2)
     andi    $t4, $t1, 5
     beqz    $t4, 1f
     nop
@@ -288,8 +288,8 @@ m_read_neg1:
 .endm
 
 .macro m_read8_rom sect
-    lui     $t0, %hi(Pico+0x22200)
-    lw      $t0, %lo(Pico+0x22200)($t0)  # rom
+    lui     $t0, %hi(Pico+OFS_Pico_rom)
+    lw      $t0, %lo(Pico+OFS_Pico_rom)($t0)  # rom
     xori    $a0, 1
     ins     $a0, $0,  19, 13
 .if \sect
@@ -388,15 +388,15 @@ m_read8_misc_io:
     nop
 
 m_read8_misc_hwreg:
-    lui     $v0, %hi(Pico+0x2220f)
+    lui     $v0, %hi(Pico+OFS_Pico_m_hardware)
     jr      $ra
-    lb      $v0, %lo(Pico+0x2220f)($v0)
+    lb      $v0, %lo(Pico+OFS_Pico_m_hardware)($v0)
 
 m_read8_misc_ioports:
-    lui     $v0, %hi(Pico+0x22000)
+    lui     $v0, %hi(PicoMem+0x22000)
     ins     $v0, $t0, 0, 5
     jr      $ra
-    lb      $v0, %lo(Pico+0x22000)($v0)
+    lb      $v0, %lo(PicoMem+0x22000)($v0)
 
 m_read8_misc2:
     lui     $t0, 0xa1
@@ -423,10 +423,10 @@ m_read8_z80_misc:
     nop
 
 m_read8_fake_ym2612:
-    lb      $v0, %lo(Pico+0x22208)($t0) # Pico.m.rotate
+    lb      $v0, %lo(Pico+OFS_Pico_m_rotate)($t0)
     addiu   $t1, $v0, 1
     jr      $ra
-    sb      $t1, %lo(Pico+0x22208)($t0)
+    sb      $t1, %lo(Pico+OFS_Pico_m_rotate)($t0)
 
 # delay slot friendly
 .macro m_read8_call16 funcname is_func_ptr=0
@@ -472,11 +472,11 @@ m_read8_vdp:
     nop
 
 m_read8_ram:
-    lui     $t0, %hi(Pico)
+    lui     $t0, %hi(PicoMem)
     ins     $t0, $a0, 0, 16
     xori    $t0, 1
     jr      $ra
-    lb      $v0, %lo(Pico)($t0)
+    lb      $v0, %lo(PicoMem)($t0)
 
 m_read8_above_rom:
     # might still be SRam (Micro Machines, HardBall '95)
@@ -486,8 +486,8 @@ m_read8_above_rom:
 # #############################################################################
 
 .macro m_read16_rom sect
-    lui     $t0, %hi(Pico+0x22200)
-    lw      $t0, %lo(Pico+0x22200)($t0)  # rom
+    lui     $t0, %hi(Pico+OFS_Pico_rom)
+    lw      $t0, %lo(Pico+OFS_Pico_rom)($t0)  # rom
     ins     $a0, $0,   0,  1
     ins     $a0, $0,  19, 13
 .if \sect
@@ -583,11 +583,11 @@ m_read16_vdp:
     nop
 
 m_read16_ram:
-    lui     $t0, %hi(Pico)
+    lui     $t0, %hi(PicoMem)
     ins     $a0, $0, 0, 1
     ins     $t0, $a0, 0, 16
     jr      $ra
-    lh      $v0, %lo(Pico)($t0)
+    lh      $v0, %lo(PicoMem)($t0)
 
 m_read16_above_rom:
     # might still be SRam
@@ -600,8 +600,8 @@ m_read16_above_rom:
 # #############################################################################
 
 .macro m_read32_rom sect
-    lui     $t0, %hi(Pico+0x22200)
-    lw      $t0, %lo(Pico+0x22200)($t0)  # rom
+    lui     $t0, %hi(Pico+OFS_Pico_rom)
+    lw      $t0, %lo(Pico+OFS_Pico_rom)($t0)  # rom
     ins     $a0, $0,   0,  1
     ins     $a0, $0,  19, 13
 .if \sect
@@ -723,11 +723,11 @@ m_read32_vdp:
     m_read32_call16 PicoVideoRead
 
 m_read32_ram:
-    lui     $t0, %hi(Pico)
+    lui     $t0, %hi(PicoMem)
     ins     $a0, $0, 0, 1
     ins     $t0, $a0, 0, 16
-    lh      $v1, %lo(Pico)($t0)
-    lh      $v0, %lo(Pico+2)($t0)
+    lh      $v1, %lo(PicoMem)($t0)
+    lh      $v0, %lo(PicoMem+2)($t0)
     jr      $ra
     ins     $v0, $v1, 16, 16
 
@@ -771,11 +771,11 @@ PicoWriteRomHW_SSF2: # u32 a, u32 d
     bnez    $a0, pwr_banking
 
     # sram register
-    lui     $t0, %hi(Pico+0x22211)
-    lb      $t1, %lo(Pico+0x22211)($t0) # Pico.m.sram_reg
+    lui     $t0, %hi(Pico+OFS_Pico_m_sram_reg)
+    lb      $t1, %lo(Pico+OFS_Pico_m_sram_reg)($t0) # Pico.m.sram_reg
     ins     $t1, $a1, 0, 2
     jr      $ra
-    sb      $t1, %lo(Pico+0x22211)($t0)
+    sb      $t1, %lo(Pico+OFS_Pico_m_sram_reg)($t0)
 
 pwr_banking:
     andi    $a1, 0x1f
diff --git a/pico/memory_arm.s b/pico/memory_arm.S
similarity index 73%
rename from pico/memory_arm.s
rename to pico/memory_arm.S
index f6d7f79..87846d6 100644
--- a/pico/memory_arm.s
+++ b/pico/memory_arm.S
@@ -6,6 +6,8 @@
  * See COPYING file in the top-level directory.
  */
 
+#include "pico_int_o32.h"
+
 .equ SRR_MAPPED,    (1 <<  0)
 .equ SRR_READONLY,  (1 <<  1)
 .equ SRF_EEPROM,    (1 <<  1)
@@ -21,35 +23,32 @@
 .global PicoWrite8_io
 .global PicoWrite16_io
 
-PicoRead8_sram: @ u32 a, u32 d
-    ldr     r2, =(SRam)
-    ldr     r3, =(Pico+0x22200)
-    ldr     r1, [r2, #8]    @ SRam.end
+PicoRead8_sram: @ u32 a
+    ldr     r3, =Pico
+    ldr     r1, [r3, #OFS_Pico_sv_end]
     cmp     r0, r1
     bgt     m_read8_nosram
-    ldr     r1, [r2, #4]    @ SRam.start
-    cmp     r0, r1
+    ldr     r2, [r3, #OFS_Pico_sv_start]
+    cmp     r0, r2
     blt     m_read8_nosram
-    ldrb    r1, [r3, #0x11] @ Pico.m.sram_reg
+    ldrb    r1, [r3, #OFS_Pico_m_sram_reg]
     tst     r1, #SRR_MAPPED
     beq     m_read8_nosram
-    ldr     r1, [r2, #0x0c]
+    ldr     r1, [r3, #OFS_Pico_sv_flags]
     tst     r1, #SRF_EEPROM
     bne     m_read8_eeprom
-    ldr     r1, [r2, #4]    @ SRam.start
-    ldr     r2, [r2]        @ SRam.data
-    sub     r0, r0, r1
-    add     r0, r0, r2
-    ldrb    r0, [r0]
+    ldr     r1, [r3, #OFS_Pico_sv_data]
+    sub     r0, r0, r2
+    ldrb    r0, [r0, r1]
     bx      lr
 
 m_read8_nosram:
-    ldr     r1, [r3, #4]    @ romsize
+    ldr     r1, [r3, #OFS_Pico_romsize]
     cmp     r0, r1
     movgt   r0, #0
     bxgt    lr              @ bad location
     @ XXX: banking unfriendly
-    ldr     r1, [r3]
+    ldr     r1, [r3, #OFS_Pico_rom]
     eor     r0, r0, #1
     ldrb    r0, [r1, r0]
     bx      lr
@@ -63,7 +62,7 @@ m_read8_eeprom:
     bx      lr
 
 
-PicoRead8_io: @ u32 a, u32 d
+PicoRead8_io: @ u32 a
     bic     r2, r0, #0x001f   @ most commonly we get i/o port read,
     cmp     r2, #0xa10000     @ so check for it first
     beq     io_ports_read
@@ -73,11 +72,11 @@ m_read8_not_io:
     cmp     r2, #0x1000
     bne     m_read8_not_brq
 
-    ldr     r3, =(Pico+0x22200)
+    ldr     r3, =Pico
     mov     r1, r0
-    ldr     r0, [r3, #8]      @ Pico.m.rotate
+    ldr     r0, [r3, #OFS_Pico_m_rotate]
     add     r0, r0, #1
-    strb    r0, [r3, #8]
+    strb    r0, [r3, #OFS_Pico_m_rotate]
     eor     r0, r0, r0, lsl #6
 
     tst     r1, #1
@@ -87,8 +86,8 @@ m_read8_not_io:
     cmp     r2, #0x1100
     bxne    lr                @ not busreq
 
-    ldrb    r1, [r3, #(8+0x01)] @ Pico.m.z80Run
-    ldrb    r2, [r3, #(8+0x0f)] @ Pico.m.z80_reset
+    ldrb    r1, [r3, #OFS_Pico_m_z80Run]
+    ldrb    r2, [r3, #OFS_Pico_m_z80_reset]
     orr     r0, r0, r1
     orr     r0, r0, r2
     bx      lr
@@ -104,36 +103,33 @@ m_read8_not_brq:
 @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
 
 PicoRead16_sram: @ u32 a, u32 d
-    ldr     r2, =(SRam)
-    ldr     r3, =(Pico+0x22200)
-    ldr     r1, [r2, #8]    @ SRam.end
+    ldr     r3, =Pico
+    ldr     r1, [r3, #OFS_Pico_sv_end]
     cmp     r0, r1
     bgt     m_read16_nosram
-    ldr     r1, [r2, #4]    @ SRam.start
-    cmp     r0, r1
+    ldr     r2, [r3, #OFS_Pico_sv_start]
+    cmp     r0, r2
     blt     m_read16_nosram
-    ldrb    r1, [r3, #0x11] @ Pico.m.sram_reg
+    ldrb    r1, [r3, #OFS_Pico_m_sram_reg]
     tst     r1, #SRR_MAPPED
     beq     m_read16_nosram
-    ldr     r1, [r2, #0x0c]
+    ldr     r1, [r3, #OFS_Pico_sv_flags]
     tst     r1, #SRF_EEPROM
     bne     EEPROM_read
-    ldr     r1, [r2, #4]    @ SRam.start
-    ldr     r2, [r2]        @ SRam.data
-    sub     r0, r0, r1
-    add     r0, r0, r2
-    ldrb    r1, [r0], #1
-    ldrb    r0, [r0]
+    ldr     r1, [r3, #OFS_Pico_sv_data]
+    sub     r0, r0, r2
+    ldrb    r1, [r0, r1]!
+    ldrb    r0, [r0, #1]
     orr     r0, r0, r1, lsl #8
     bx      lr
 
 m_read16_nosram:
-    ldr     r1, [r3, #4]    @ romsize
+    ldr     r1, [r3, #OFS_Pico_romsize]
     cmp     r0, r1
     movgt   r0, #0
     bxgt    lr              @ bad location
     @ XXX: banking unfriendly
-    ldr     r1, [r3]
+    ldr     r1, [r3, #OFS_Pico_rom]
     ldrh    r0, [r1, r0]
     bx      lr
 
@@ -152,19 +148,19 @@ m_read16_not_io:
     cmp     r2, #0x1000
     bne     m_read16_not_brq
 
-    ldr     r3, =(Pico+0x22200)
+    ldr     r3, =Pico
     and     r2, r0, #0xff00
-    ldr     r0, [r3, #8]      @ Pico.m.rotate
+    ldr     r0, [r3, #OFS_Pico_m_rotate]
     add     r0, r0, #1
-    strb    r0, [r3, #8]
+    strb    r0, [r3, #OFS_Pico_m_rotate]
     eor     r0, r0, r0, lsl #5
     eor     r0, r0, r0, lsl #8
     bic     r0, r0, #0x100    @ bit8 defined in this area
     cmp     r2, #0x1100
     bxne    lr                @ not busreq
 
-    ldrb    r1, [r3, #(8+0x01)] @ Pico.m.z80Run
-    ldrb    r2, [r3, #(8+0x0f)] @ Pico.m.z80_reset
+    ldrb    r1, [r3, #OFS_Pico_m_z80Run]
+    ldrb    r2, [r3, #OFS_Pico_m_z80_reset]
     orr     r0, r0, r1, lsl #8
     orr     r0, r0, r2, lsl #8
     bx      lr
@@ -202,12 +198,12 @@ m_write8_not_z80ctl:
     eor     r2, r2, #0x003000
     eors    r2, r2, #0x0000f1
     bne     m_write8_not_sreg
-    ldr     r3, =(Pico+0x22200)
-    ldrb    r2, [r3, #(8+9)] @ Pico.m.sram_reg
+    ldr     r3, =Pico
+    ldrb    r2, [r3, #OFS_Pico_m_sram_reg]
     and     r1, r1, #(SRR_MAPPED|SRR_READONLY)
     bic     r2, r2, #(SRR_MAPPED|SRR_READONLY)
     orr     r2, r2, r1
-    strb    r2, [r3, #(8+9)]
+    strb    r2, [r3, #OFS_Pico_m_sram_reg]
     bx      lr
 
 m_write8_not_sreg:
@@ -239,12 +235,12 @@ m_write16_not_z80ctl:
     eor     r2, r2, #0x003000
     eors    r2, r2, #0x0000f0
     bne     m_write16_not_sreg
-    ldr     r3, =(Pico+0x22200)
-    ldrb    r2, [r3, #(8+9)] @ Pico.m.sram_reg
+    ldr     r3, =Pico
+    ldrb    r2, [r3, #OFS_Pico_m_sram_reg]
     and     r1, r1, #(SRR_MAPPED|SRR_READONLY)
     bic     r2, r2, #(SRR_MAPPED|SRR_READONLY)
     orr     r2, r2, r1
-    strb    r2, [r3, #(8+9)]
+    strb    r2, [r3, #OFS_Pico_m_sram_reg]
     bx      lr
 
 m_write16_not_sreg:
diff --git a/pico/mode4.c b/pico/mode4.c
index bda1188..55e6d10 100644
--- a/pico/mode4.c
+++ b/pico/mode4.c
@@ -31,7 +31,7 @@ static int TileNormM4(int sx, int addr, int pal)
   unsigned char *pd = Pico.est.HighCol + sx;
   unsigned int pack, t;
 
-  pack = *(unsigned int *)(Pico.vram + addr); /* Get 4 bitplanes / 8 pixels */
+  pack = *(unsigned int *)(PicoMem.vram + addr); /* Get 4 bitplanes / 8 pixels */
   if (pack)
   {
     PLANAR_PIXEL(0, 0)
@@ -53,7 +53,7 @@ static int TileFlipM4(int sx,int addr,int pal)
   unsigned char *pd = Pico.est.HighCol + sx;
   unsigned int pack, t;
 
-  pack = *(unsigned int *)(Pico.vram + addr); /* Get 4 bitplanes / 8 pixels */
+  pack = *(unsigned int *)(PicoMem.vram + addr); /* Get 4 bitplanes / 8 pixels */
   if (pack)
   {
     PLANAR_PIXEL(0, 7)
@@ -83,7 +83,7 @@ static void draw_sprites(int scanline)
   if (pv->reg[0] & 8)
     xoff = 0;
 
-  sat = (unsigned char *)Pico.vram + ((pv->reg[5] & 0x7e) << 7);
+  sat = (unsigned char *)PicoMem.vram + ((pv->reg[5] & 0x7e) << 7);
   if (pv->reg[1] & 2) {
     addr_mask = 0xfe; h = 16;
   } else {
@@ -161,7 +161,7 @@ static void DrawDisplayM4(int scanline)
     line -= 224;
 
   // Find name table:
-  nametab = Pico.vram;
+  nametab = PicoMem.vram;
   nametab += (pv->reg[2] & 0x0e) << (10-1);
   nametab += (line>>3) << (6-1);
 
@@ -248,7 +248,7 @@ void PicoLineMode4(int line)
 
 void PicoDoHighPal555M4(void)
 {
-  unsigned int *spal=(void *)Pico.cram;
+  unsigned int *spal=(void *)PicoMem.cram;
   unsigned int *dpal=(void *)Pico.est.HighPal;
   unsigned int t;
   int i;
diff --git a/pico/pico.c b/pico/pico.c
index 0404367..bcd8aa1 100644
--- a/pico/pico.c
+++ b/pico/pico.c
@@ -11,6 +11,7 @@
 #include "sound/ym2612.h"
 
 struct Pico Pico;
+struct PicoMem PicoMem;
 int PicoOpt;     
 int PicoSkipFrame;     // skip rendering frame?
 int PicoPad[2];        // Joypads, format is MXYZ SACB RLDU
@@ -20,11 +21,8 @@ int PicoQuirks;        // game-specific quirks
 int PicoRegionOverride; // override the region detection 0: Auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe
 int PicoAutoRgnOrder;
 
-struct PicoSRAM SRam;
 int emustatus;         // rapid_ym2612, multi_ym_updates
 
-struct PicoTiming timing;
-
 void (*PicoWriteSound)(int len) = NULL; // called at the best time to send sound buffer (PsndOut) to hardware
 void (*PicoResetHook)(void) = NULL;
 void (*PicoLineHook)(void) = NULL;
@@ -34,11 +32,13 @@ void PicoInit(void)
 {
   // Blank space for state:
   memset(&Pico,0,sizeof(Pico));
+  memset(&PicoMem,0,sizeof(PicoMem));
   memset(&PicoPad,0,sizeof(PicoPad));
   memset(&PicoPadInt,0,sizeof(PicoPadInt));
 
-  Pico.est.Pico_video = &Pico.video;
-  Pico.est.Pico_vram = Pico.vram;
+  Pico.est.Pico = &Pico;
+  Pico.est.PicoMem_vram = PicoMem.vram;
+  Pico.est.PicoMem_cram = PicoMem.cram;
   Pico.est.PicoOpt = &PicoOpt;
 
   // Init CPUs:
@@ -61,18 +61,18 @@ void PicoExit(void)
   PicoCartUnload();
   z80_exit();
 
-  if (SRam.data)
-    free(SRam.data);
+  if (Pico.sv.data)
+    free(Pico.sv.data);
   pevt_dump();
 }
 
 void PicoPower(void)
 {
   Pico.m.frame_count = 0;
-  SekCycleCnt = SekCycleAim = 0;
+  Pico.t.m68c_cnt = Pico.t.m68c_aim = 0;
 
   // clear all memory of the emulated machine
-  memset(&Pico.ram,0,(unsigned char *)&Pico.rom - Pico.ram);
+  memset(&PicoMem,0,sizeof(PicoMem));
 
   memset(&Pico.video,0,sizeof(Pico.video));
   memset(&Pico.m,0,sizeof(Pico.m));
@@ -81,7 +81,7 @@ void PicoPower(void)
   z80_reset();
 
   // my MD1 VA6 console has this in IO
-  Pico.ioports[1] = Pico.ioports[2] = Pico.ioports[3] = 0xff;
+  PicoMem.ioports[1] = PicoMem.ioports[2] = PicoMem.ioports[3] = 0xff;
 
   // default VDP register values (based on Fusion)
   Pico.video.reg[0] = Pico.video.reg[1] = 0x04;
@@ -211,12 +211,12 @@ int PicoReset(void)
 
   // reset sram state; enable sram access by default if it doesn't overlap with ROM
   Pico.m.sram_reg = 0;
-  if ((SRam.flags & SRF_EEPROM) || Pico.romsize <= SRam.start)
+  if ((Pico.sv.flags & SRF_EEPROM) || Pico.romsize <= Pico.sv.start)
     Pico.m.sram_reg |= SRR_MAPPED;
 
-  if (SRam.flags & SRF_ENABLED)
-    elprintf(EL_STATUS, "sram: %06x - %06x; eeprom: %i", SRam.start, SRam.end,
-      !!(SRam.flags & SRF_EEPROM));
+  if (Pico.sv.flags & SRF_ENABLED)
+    elprintf(EL_STATUS, "sram: %06x - %06x; eeprom: %i", Pico.sv.start, Pico.sv.end,
+      !!(Pico.sv.flags & SRF_EEPROM));
 
   return 0;
 }
@@ -274,7 +274,7 @@ PICO_INTERNAL int CheckDMA(void)
 
   elprintf(EL_VDPDMA, "~Dma %i op=%i can=%i burn=%i [%u]",
     Pico.m.dma_xfers, dma_op1, xfers_can, burn, SekCyclesDone());
-  //dprintf("~aim: %i, cnt: %i", SekCycleAim, SekCycleCnt);
+  //dprintf("~aim: %i, cnt: %i", Pico.t.m68c_aim, Pico.t.m68c_cnt);
   return burn;
 }
 
@@ -286,18 +286,18 @@ PICO_INTERNAL void PicoSyncZ80(unsigned int m68k_cycles_done)
   int m68k_cnt;
   int cnt;
 
-  m68k_cnt = m68k_cycles_done - timing.m68c_frame_start;
-  timing.z80c_aim = cycles_68k_to_z80(m68k_cnt);
-  cnt = timing.z80c_aim - timing.z80c_cnt;
+  m68k_cnt = m68k_cycles_done - Pico.t.m68c_frame_start;
+  Pico.t.z80c_aim = cycles_68k_to_z80(m68k_cnt);
+  cnt = Pico.t.z80c_aim - Pico.t.z80c_cnt;
 
   pprof_start(z80);
 
   elprintf(EL_BUSREQ, "z80 sync %i (%u|%u -> %u|%u)", cnt,
-    timing.z80c_cnt, timing.z80c_cnt * 15 / 7 / 488,
-    timing.z80c_aim, timing.z80c_aim * 15 / 7 / 488);
+    Pico.t.z80c_cnt, Pico.t.z80c_cnt * 15 / 7 / 488,
+    Pico.t.z80c_aim, Pico.t.z80c_aim * 15 / 7 / 488);
 
   if (cnt > 0)
-    timing.z80c_cnt += z80_run(cnt);
+    Pico.t.z80c_cnt += z80_run(cnt);
 
   pprof_end(z80);
 }
diff --git a/pico/pico_cmn.c b/pico/pico_cmn.c
index 0907b93..a450757 100644
--- a/pico/pico_cmn.c
+++ b/pico/pico_cmn.c
@@ -21,24 +21,24 @@
   SekRunM68k(m68k_cycles)
 #endif
 
-// sync m68k to SekCycleAim
+// sync m68k to Pico.t.m68c_aim
 static void SekSyncM68k(void)
 {
   int cyc_do;
   pprof_start(m68k);
   pevt_log_m68k_o(EVT_RUN_START);
 
-  while ((cyc_do = SekCycleAim - SekCycleCnt) > 0) {
-    SekCycleCnt += cyc_do;
+  while ((cyc_do = Pico.t.m68c_aim - Pico.t.m68c_cnt) > 0) {
+    Pico.t.m68c_cnt += cyc_do;
 
 #if defined(EMU_C68K)
     PicoCpuCM68k.cycles = cyc_do;
     CycloneRun(&PicoCpuCM68k);
-    SekCycleCnt -= PicoCpuCM68k.cycles;
+    Pico.t.m68c_cnt -= PicoCpuCM68k.cycles;
 #elif defined(EMU_M68K)
-    SekCycleCnt += m68k_execute(cyc_do) - cyc_do;
+    Pico.t.m68c_cnt += m68k_execute(cyc_do) - cyc_do;
 #elif defined(EMU_F68K)
-    SekCycleCnt += fm68k_emulate(cyc_do, 0) - cyc_do;
+    Pico.t.m68c_cnt += fm68k_emulate(cyc_do, 0) - cyc_do;
 #endif
   }
 
@@ -51,11 +51,11 @@ static void SekSyncM68k(void)
 
 static inline void SekRunM68k(int cyc)
 {
-  SekCycleAim += cyc;
-  cyc = SekCycleAim - SekCycleCnt;
+  Pico.t.m68c_aim += cyc;
+  cyc = Pico.t.m68c_aim - Pico.t.m68c_cnt;
   if (cyc <= 0)
     return;
-  SekCycleCnt += cyc >> 6; // refresh slowdowns
+  Pico.t.m68c_cnt += cyc >> 6; // refresh slowdowns
   SekSyncM68k();
 }
 
@@ -108,7 +108,7 @@ static int PicoFrameHints(void)
   }
   else skip=PicoSkipFrame;
 
-  timing.m68c_frame_start = SekCyclesDone();
+  Pico.t.m68c_frame_start = SekCyclesDone();
   pv->v_counter = Pico.m.scanline = 0;
   z80_resetCycles();
   PsndStartFrame();
@@ -170,7 +170,7 @@ static int PicoFrameHints(void)
     }
 
     // Run scanline:
-    line_base_cycles = SekCyclesDone();
+    Pico.t.m68c_line_start = SekCyclesDone();
     do_timing_hacks_as(pv, vdp_slots);
     CPUS_RUN(CYCLES_M68K_LINE);
 
@@ -212,7 +212,7 @@ static int PicoFrameHints(void)
   // there must be a delay after vblank bit is set and irq is asserted (Mazin Saga)
   // also delay between F bit (bit 7) is set in SR and IRQ happens (Ex-Mutants)
   // also delay between last H-int and V-int (Golden Axe 3)
-  line_base_cycles = SekCyclesDone();
+  Pico.t.m68c_line_start = SekCyclesDone();
   do_timing_hacks_vb();
   CPUS_RUN(CYCLES_M68K_VINT_LAG);
 
@@ -276,7 +276,7 @@ static int PicoFrameHints(void)
     }
 
     // Run scanline:
-    line_base_cycles = SekCyclesDone();
+    Pico.t.m68c_line_start = SekCyclesDone();
     do_timing_hacks_vb();
     CPUS_RUN(CYCLES_M68K_LINE);
 
@@ -300,7 +300,7 @@ static int PicoFrameHints(void)
   }
 
   // Run scanline:
-  line_base_cycles = SekCyclesDone();
+  Pico.t.m68c_line_start = SekCyclesDone();
   do_timing_hacks_as(pv, vdp_slots);
   CPUS_RUN(CYCLES_M68K_LINE);
 
diff --git a/pico/pico_int.h b/pico/pico_int.h
index 89cccc7..765afaf 100644
--- a/pico/pico_int.h
+++ b/pico/pico_int.h
@@ -128,26 +128,18 @@ extern m68ki_cpu_core PicoCpuMM68k, PicoCpuMS68k;
 #endif
 #endif // EMU_M68K
 
-// while running, cnt represents target of current timeslice
-// while not in SekRun(), it's actual cycles done
-// (but always use SekCyclesDone() if you need current position)
-// cnt may change if timeslice is ended prematurely or extended,
-// so we use SekCycleAim for the actual target
-extern unsigned int SekCycleCnt;
-extern unsigned int SekCycleAim;
-
 // number of cycles done (can be checked anywhere)
-#define SekCyclesDone()  (SekCycleCnt - SekCyclesLeft)
+#define SekCyclesDone()  (Pico.t.m68c_cnt - SekCyclesLeft)
 
 // burn cycles while not in SekRun() and while in
-#define SekCyclesBurn(c)    SekCycleCnt += c
+#define SekCyclesBurn(c)    Pico.t.m68c_cnt += c
 #define SekCyclesBurnRun(c) { \
   SekCyclesLeft -= c; \
 }
 
 // note: sometimes may extend timeslice to delay an irq
 #define SekEndRun(after) { \
-  SekCycleCnt -= SekCyclesLeft - (after); \
+  Pico.t.m68c_cnt -= SekCyclesLeft - (after); \
   SekCyclesLeft = after; \
 }
 
@@ -212,10 +204,10 @@ extern struct DrZ80 drZ80;
 #define Z80_STATE_SIZE 0x60
 
 #define z80_resetCycles() \
-  timing.z80c_cnt = timing.z80c_aim = timing.z80_scanline = 0
+  Pico.t.z80c_cnt = Pico.t.z80c_aim = Pico.t.z80_scanline = 0
 
 #define z80_cyclesDone() \
-  (timing.z80c_aim - z80_cyclesLeft)
+  (Pico.t.z80c_aim - z80_cyclesLeft)
 
 #define cycles_68k_to_z80(x) ((x) * 3823 >> 13)
 
@@ -359,15 +351,16 @@ struct PicoEState
   void *DrawLineDest;          // draw destination
   unsigned char *HighCol;
   int *HighPreSpr;
-  void *Pico_video;
-  void *Pico_vram;
+  struct Pico *Pico;
+  void *PicoMem_vram;
+  void *PicoMem_cram;
   int  *PicoOpt;
   unsigned char *Draw2FB;
   unsigned short HighPal[0x100];
 };
 
-// some assembly stuff depend on these, do not touch!
-struct Pico
+// some assembly stuff still depends on these, do not touch!
+struct PicoMem
 {
   unsigned char ram[0x10000];  // 0x00000 scratch ram
   union {                      // vram is byteswapped for easier reads when drawing
@@ -379,14 +372,6 @@ struct Pico
   unsigned char pad[0xf0];     // unused
   unsigned short cram[0x40];   // 0x22100
   unsigned short vsram[0x40];  // 0x22180
-
-  unsigned char *rom;          // 0x22200
-  unsigned int romsize;        // 0x22204 (on 32bits)
-
-  struct PicoMisc m;
-  struct PicoVideo video;
-  struct PicoMS ms;
-  struct PicoEState est;
 };
 
 // sram
@@ -396,7 +381,7 @@ struct Pico
 #define SRF_ENABLED  (1 << 0)
 #define SRF_EEPROM   (1 << 1)
 
-struct PicoSRAM
+struct PicoCartSave
 {
   unsigned char *data;		// actual data
   unsigned int start;		// start address in 68k address space
@@ -412,6 +397,38 @@ struct PicoSRAM
   unsigned int size;
 };
 
+struct PicoTiming
+{
+  // while running, cnt represents target of current timeslice
+  // while not in SekRun(), it's actual cycles done
+  // (but always use SekCyclesDone() if you need current position)
+  // _cnt may change if timeslice is ended prematurely or extended,
+  // so we use _aim for the actual target
+  unsigned int m68c_cnt;
+  unsigned int m68c_aim;
+  unsigned int m68c_frame_start;        // m68k cycles
+  unsigned int m68c_line_start;
+
+  unsigned int z80c_cnt;                // z80 cycles done (this frame)
+  unsigned int z80c_aim;
+  int z80_scanline;
+};
+
+// run tools/mkoffsets pico/pico_int_o32.h if you change these
+// careful with savestate compat
+struct Pico
+{
+  struct PicoVideo video;
+  struct PicoMisc m;
+  struct PicoTiming t;
+  struct PicoCartSave sv;
+  struct PicoEState est;
+  struct PicoMS ms;
+
+  unsigned char *rom;
+  unsigned int romsize;
+};
+
 // MCD
 #define PCM_MIXBUF_LEN ((12500000 / 384) / 50 + 1)
 
@@ -592,15 +609,6 @@ struct Pico32xMem
   unsigned short pwm_fifo[2][4];        // [0] - current raw, others - fifo entries
 };
 
-struct PicoTiming
-{
-  unsigned int m68c_frame_start;        // m68k cycles
-  unsigned int z80c_cnt;                // z80 cycles done (this frame)
-  unsigned int z80c_aim;
-  int z80_scanline;
-};
-extern struct PicoTiming timing;
-
 // area.c
 extern void (*PicoLoadStateHook)(void);
 
@@ -699,7 +707,7 @@ void pcd_state_loaded_mem(void);
 
 // pico.c
 extern struct Pico Pico;
-extern struct PicoSRAM SRam;
+extern struct PicoMem PicoMem;
 extern int PicoPadInt[2];
 extern int emustatus;
 extern void (*PicoResetHook)(void);
@@ -809,7 +817,6 @@ void ym2612_unpack_state(void);
 
 
 // videoport.c
-extern int line_base_cycles;
 PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d);
 PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a);
 unsigned char PicoVideoRead8DataH(void);
@@ -898,7 +905,7 @@ void p32x_event_schedule_sh2(SH2 *sh2, enum p32x_event event, int after);
 void p32x_schedule_hint(SH2 *sh2, int m68k_cycles);
 
 // 32x/memory.c
-struct Pico32xMem *Pico32xMem;
+extern struct Pico32xMem *Pico32xMem;
 unsigned int PicoRead8_32x(unsigned int a);
 unsigned int PicoRead16_32x(unsigned int a);
 void PicoWrite8_32x(unsigned int a, unsigned int d);
diff --git a/pico/pico_int_o32.h b/pico/pico_int_o32.h
index dc7aaa2..720a5ee 100644
--- a/pico/pico_int_o32.h
+++ b/pico/pico_int_o32.h
@@ -1,11 +1,26 @@
-/* autogenerated by ./tools/mkoffsets, do not edit */
-#define OFS_DrawScanline     0x00
-#define OFS_rendstatus       0x04
-#define OFS_DrawLineDest     0x08
-#define OFS_HighCol          0x0c
-#define OFS_HighPreSpr       0x10
-#define OFS_Pico_video       0x14
-#define OFS_Pico_vram        0x18
-#define OFS_PicoOpt          0x1c
-#define OFS_Draw2FB          0x20
-#define OFS_HighPal          0x24
+/* autogenerated by tools/mkoffsets, do not edit */
+#define OFS_Pico_video_reg   0x0000
+#define OFS_Pico_m_rotate    0x0040
+#define OFS_Pico_m_z80Run    0x0041
+#define OFS_Pico_m_dirtyPal  0x0046
+#define OFS_Pico_m_hardware  0x0047
+#define OFS_Pico_m_z80_reset 0x004f
+#define OFS_Pico_m_sram_reg  0x0049
+#define OFS_Pico_sv          0x007c
+#define OFS_Pico_sv_data     0x007c
+#define OFS_Pico_sv_start    0x0080
+#define OFS_Pico_sv_end      0x0084
+#define OFS_Pico_sv_flags    0x0088
+#define OFS_Pico_rom         0x031c
+#define OFS_Pico_romsize     0x0320
+#define OFS_EST_DrawScanline 0x00
+#define OFS_EST_rendstatus   0x04
+#define OFS_EST_DrawLineDest 0x08
+#define OFS_EST_HighCol      0x0c
+#define OFS_EST_HighPreSpr   0x10
+#define OFS_EST_Pico         0x14
+#define OFS_EST_PicoMem_vram 0x18
+#define OFS_EST_PicoMem_cram 0x1c
+#define OFS_EST_PicoOpt      0x20
+#define OFS_EST_Draw2FB      0x24
+#define OFS_EST_HighPal      0x28
diff --git a/pico/sek.c b/pico/sek.c
index c91374b..f599d9b 100644
--- a/pico/sek.c
+++ b/pico/sek.c
@@ -10,11 +10,6 @@
 #include "pico_int.h"
 #include "memory.h"
 
-
-unsigned int SekCycleCnt;
-unsigned int SekCycleAim;
-
-
 /* context */
 // Cyclone 68000
 #ifdef EMU_C68K
@@ -36,8 +31,8 @@ M68K_CONTEXT PicoCpuFM68k;
 static int SekIntAck(int level)
 {
   // try to emulate VDP's reaction to 68000 int ack
-  if     (level == 4) { Pico.video.pending_ints  =  0;    elprintf(EL_INTS, "hack: @ %06x [%u]", SekPc, SekCycleCnt); }
-  else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%u]", SekPc, SekCycleCnt); }
+  if     (level == 4) { Pico.video.pending_ints  =  0;    elprintf(EL_INTS, "hack: @ %06x [%u]", SekPc, Pico.t.m68c_cnt); }
+  else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%u]", SekPc, Pico.t.m68c_cnt); }
   PicoCpuCM68k.irq = 0;
   return CYCLONE_INT_ACK_AUTOVECTOR;
 }
@@ -76,8 +71,8 @@ static int SekUnrecognizedOpcode()
 #ifdef EMU_M68K
 static int SekIntAckM68K(int level)
 {
-  if     (level == 4) { Pico.video.pending_ints  =  0;    elprintf(EL_INTS, "hack: @ %06x [%u]", SekPc, SekCycleCnt); }
-  else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%u]", SekPc, SekCycleCnt); }
+  if     (level == 4) { Pico.video.pending_ints  =  0;    elprintf(EL_INTS, "hack: @ %06x [%u]", SekPc, Pico.t.m68c_cnt); }
+  else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%u]", SekPc, Pico.t.m68c_cnt); }
   CPU_INT_LEVEL = 0;
   return M68K_INT_ACK_AUTOVECTOR;
 }
@@ -168,17 +163,17 @@ PICO_INTERNAL int SekReset(void)
 
 void SekStepM68k(void)
 {
-  SekCycleAim=SekCycleCnt+1;
+  Pico.t.m68c_aim = Pico.t.m68c_cnt + 1;
 #if defined(EMU_CORE_DEBUG)
-  SekCycleCnt+=CM_compareRun(1, 0);
+  Pico.t.m68c_cnt += CM_compareRun(1, 0);
 #elif defined(EMU_C68K)
   PicoCpuCM68k.cycles=1;
   CycloneRun(&PicoCpuCM68k);
-  SekCycleCnt+=1-PicoCpuCM68k.cycles;
+  Pico.t.m68c_cnt += 1 - PicoCpuCM68k.cycles;
 #elif defined(EMU_M68K)
-  SekCycleCnt+=m68k_execute(1);
+  Pico.t.m68c_cnt += m68k_execute(1);
 #elif defined(EMU_F68K)
-  SekCycleCnt+=fm68k_emulate(1, 0);
+  Pico.t.m68c_cnt += fm68k_emulate(1, 0);
 #endif
 }
 
@@ -228,7 +223,7 @@ PICO_INTERNAL void SekPackCpu(unsigned char *cpu, int is_sub)
 
   *(unsigned int *)(cpu+0x40) = pc;
   *(unsigned int *)(cpu+0x50) =
-    is_sub ? SekCycleCntS68k : SekCycleCnt;
+    is_sub ? SekCycleCntS68k : Pico.t.m68c_cnt;
 }
 
 PICO_INTERNAL void SekUnpackCpu(const unsigned char *cpu, int is_sub)
@@ -268,7 +263,7 @@ PICO_INTERNAL void SekUnpackCpu(const unsigned char *cpu, int is_sub)
   if (is_sub)
     SekCycleCntS68k = *(unsigned int *)(cpu+0x50);
   else
-    SekCycleCnt = *(unsigned int *)(cpu+0x50);
+    Pico.t.m68c_cnt = *(unsigned int *)(cpu+0x50);
 }
 
 
@@ -467,7 +462,7 @@ void SekTrace(int is_s68k)
   struct ref_68k *x68k = &ref_68ks[is_s68k];
   u32 pc = is_s68k ? SekPcS68k : SekPc;
   u32 sr = is_s68k ? SekSrS68k : SekSr;
-  u32 cycles = is_s68k ? SekCycleCntS68k : SekCycleCnt;
+  u32 cycles = is_s68k ? SekCycleCntS68k : Pico.t.m68c_cnt;
   u32 r;
   u8 cmd;
 #ifdef CPU_CMP_W
diff --git a/pico/sms.c b/pico/sms.c
index 7dc796e..a2351b0 100644
--- a/pico/sms.c
+++ b/pico/sms.c
@@ -23,7 +23,7 @@ static unsigned char vdp_data_read(void)
   struct PicoVideo *pv = &Pico.video;
   unsigned char d;
 
-  d = Pico.vramb[pv->addr];
+  d = PicoMem.vramb[pv->addr];
   pv->addr = (pv->addr + 1) & 0x3fff;
   pv->pending = 0;
   return d;
@@ -44,10 +44,10 @@ static void vdp_data_write(unsigned char d)
   struct PicoVideo *pv = &Pico.video;
 
   if (pv->type == 3) {
-    Pico.cram[pv->addr & 0x1f] = d;
+    PicoMem.cram[pv->addr & 0x1f] = d;
     Pico.m.dirtyPal = 1;
   } else {
-    Pico.vramb[pv->addr] = d;
+    PicoMem.vramb[pv->addr] = d;
   }
   pv->addr = (pv->addr + 1) & 0x3fff;
 
@@ -180,7 +180,7 @@ static void xwrite(unsigned int a, unsigned char d)
 {
   elprintf(EL_IO, "z80 write [%04x] %02x", a, d);
   if (a >= 0xc000)
-    Pico.zram[a & 0x1fff] = d;
+    PicoMem.zram[a & 0x1fff] = d;
   if (a >= 0xfff8)
     write_bank(a, d);
 }
@@ -195,7 +195,7 @@ void PicoPowerMS(void)
 {
   int s, tmp;
 
-  memset(&Pico.ram,0,(unsigned char *)&Pico.rom - Pico.ram);
+  memset(&PicoMem,0,sizeof(PicoMem));
   memset(&Pico.video,0,sizeof(Pico.video));
   memset(&Pico.m,0,sizeof(Pico.m));
   Pico.m.pal = 0;
@@ -219,11 +219,11 @@ void PicoPowerMS(void)
 void PicoMemSetupMS(void)
 {
   z80_map_set(z80_read_map, 0x0000, 0xbfff, Pico.rom, 0);
-  z80_map_set(z80_read_map, 0xc000, 0xdfff, Pico.zram, 0);
-  z80_map_set(z80_read_map, 0xe000, 0xffff, Pico.zram, 0);
+  z80_map_set(z80_read_map, 0xc000, 0xdfff, PicoMem.zram, 0);
+  z80_map_set(z80_read_map, 0xe000, 0xffff, PicoMem.zram, 0);
 
   z80_map_set(z80_write_map, 0x0000, 0xbfff, xwrite, 1);
-  z80_map_set(z80_write_map, 0xc000, 0xdfff, Pico.zram, 0);
+  z80_map_set(z80_write_map, 0xc000, 0xdfff, PicoMem.zram, 0);
   z80_map_set(z80_write_map, 0xe000, 0xffff, xwrite, 1);
  
 #ifdef _USE_DRZ80
@@ -232,8 +232,8 @@ void PicoMemSetupMS(void)
 #endif
 #ifdef _USE_CZ80
   Cz80_Set_Fetch(&CZ80, 0x0000, 0xbfff, (FPTR)Pico.rom);
-  Cz80_Set_Fetch(&CZ80, 0xc000, 0xdfff, (FPTR)Pico.zram);
-  Cz80_Set_Fetch(&CZ80, 0xe000, 0xffff, (FPTR)Pico.zram);
+  Cz80_Set_Fetch(&CZ80, 0xc000, 0xdfff, (FPTR)PicoMem.zram);
+  Cz80_Set_Fetch(&CZ80, 0xe000, 0xffff, (FPTR)PicoMem.zram);
   Cz80_Set_INPort(&CZ80, z80_sms_in);
   Cz80_Set_OUTPort(&CZ80, z80_sms_out);
 #endif
diff --git a/pico/state.c b/pico/state.c
index fce247a..8a2f2aa 100644
--- a/pico/state.c
+++ b/pico/state.c
@@ -230,9 +230,9 @@ static int state_save(void *file)
     memset(buff, 0, sizeof(buff));
     SekPackCpu(buff, 0);
     CHECKED_WRITE_BUFF(CHUNK_M68K,  buff);
-    CHECKED_WRITE_BUFF(CHUNK_RAM,   Pico.ram);
-    CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram);
-    CHECKED_WRITE_BUFF(CHUNK_IOPORTS, Pico.ioports);
+    CHECKED_WRITE_BUFF(CHUNK_RAM,   PicoMem.ram);
+    CHECKED_WRITE_BUFF(CHUNK_VSRAM, PicoMem.vsram);
+    CHECKED_WRITE_BUFF(CHUNK_IOPORTS, PicoMem.ioports);
     ym2612_pack_state();
     CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);
   }
@@ -240,9 +240,9 @@ static int state_save(void *file)
     CHECKED_WRITE_BUFF(CHUNK_SMS, Pico.ms);
   }
 
-  CHECKED_WRITE_BUFF(CHUNK_VRAM,  Pico.vram);
-  CHECKED_WRITE_BUFF(CHUNK_ZRAM,  Pico.zram);
-  CHECKED_WRITE_BUFF(CHUNK_CRAM,  Pico.cram);
+  CHECKED_WRITE_BUFF(CHUNK_VRAM,  PicoMem.vram);
+  CHECKED_WRITE_BUFF(CHUNK_ZRAM,  PicoMem.zram);
+  CHECKED_WRITE_BUFF(CHUNK_CRAM,  PicoMem.cram);
   CHECKED_WRITE_BUFF(CHUNK_MISC,  Pico.m);
   CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video);
 
@@ -421,14 +421,14 @@ static int state_load(void *file)
         CHECKED_READ_BUFF(buff_z80);
         break;
 
-      case CHUNK_RAM:     CHECKED_READ_BUFF(Pico.ram); break;
-      case CHUNK_VRAM:    CHECKED_READ_BUFF(Pico.vram); break;
-      case CHUNK_ZRAM:    CHECKED_READ_BUFF(Pico.zram); break;
-      case CHUNK_CRAM:    CHECKED_READ_BUFF(Pico.cram); break;
-      case CHUNK_VSRAM:   CHECKED_READ_BUFF(Pico.vsram); break;
+      case CHUNK_RAM:     CHECKED_READ_BUFF(PicoMem.ram); break;
+      case CHUNK_VRAM:    CHECKED_READ_BUFF(PicoMem.vram); break;
+      case CHUNK_ZRAM:    CHECKED_READ_BUFF(PicoMem.zram); break;
+      case CHUNK_CRAM:    CHECKED_READ_BUFF(PicoMem.cram); break;
+      case CHUNK_VSRAM:   CHECKED_READ_BUFF(PicoMem.vsram); break;
       case CHUNK_MISC:    CHECKED_READ_BUFF(Pico.m); break;
       case CHUNK_VIDEO:   CHECKED_READ_BUFF(Pico.video); break;
-      case CHUNK_IOPORTS: CHECKED_READ_BUFF(Pico.ioports); break;
+      case CHUNK_IOPORTS: CHECKED_READ_BUFF(PicoMem.ioports); break;
       case CHUNK_PSG:     CHECKED_READ2(28*4, sn76496_regs); break;
       case CHUNK_FM:
         ym2612_regs = YM2612GetRegs();
@@ -553,7 +553,7 @@ readend:
   z80_unpack(buff_z80);
 
   // due to dep from 68k cycles..
-  SekCycleAim = SekCycleCnt;
+  Pico.t.m68c_aim = Pico.t.m68c_cnt;
   if (PicoAHW & PAHW_32X)
     Pico32xStateLoaded(0);
   if (PicoAHW & PAHW_MCD)
@@ -596,9 +596,9 @@ static int state_load_gfx(void *file)
 
     switch (buff[0])
     {
-      case CHUNK_VRAM:  CHECKED_READ_BUFF(Pico.vram);  found++; break;
-      case CHUNK_CRAM:  CHECKED_READ_BUFF(Pico.cram);  found++; break;
-      case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;
+      case CHUNK_VRAM:  CHECKED_READ_BUFF(PicoMem.vram);  found++; break;
+      case CHUNK_CRAM:  CHECKED_READ_BUFF(PicoMem.cram);  found++; break;
+      case CHUNK_VSRAM: CHECKED_READ_BUFF(PicoMem.vsram); found++; break;
       case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;
 
 #ifndef NO_32X
@@ -679,10 +679,10 @@ int PicoStateLoadGfx(const char *fname)
   if (ret != 0) {
     // assume legacy
     areaSeek(afile, 0x10020, SEEK_SET);  // skip header and RAM
-    areaRead(Pico.vram, 1, sizeof(Pico.vram), afile);
+    areaRead(PicoMem.vram, 1, sizeof(PicoMem.vram), afile);
     areaSeek(afile, 0x2000, SEEK_CUR);
-    areaRead(Pico.cram, 1, sizeof(Pico.cram), afile);
-    areaRead(Pico.vsram, 1, sizeof(Pico.vsram), afile);
+    areaRead(PicoMem.cram, 1, sizeof(PicoMem.cram), afile);
+    areaRead(PicoMem.vsram, 1, sizeof(PicoMem.vsram), afile);
     areaSeek(afile, 0x221a0, SEEK_SET);
     areaRead(&Pico.video, 1, sizeof(Pico.video), afile);
   }
@@ -715,9 +715,9 @@ void *PicoTmpStateSave(void)
   if (t == NULL)
     return NULL;
 
-  memcpy(t->vram, Pico.vram, sizeof(Pico.vram));
-  memcpy(t->cram, Pico.cram, sizeof(Pico.cram));
-  memcpy(t->vsram, Pico.vsram, sizeof(Pico.vsram));
+  memcpy(t->vram, PicoMem.vram, sizeof(PicoMem.vram));
+  memcpy(t->cram, PicoMem.cram, sizeof(PicoMem.cram));
+  memcpy(t->vsram, PicoMem.vsram, sizeof(PicoMem.vsram));
   memcpy(&t->video, &Pico.video, sizeof(Pico.video));
 
 #ifndef NO_32X
@@ -737,9 +737,9 @@ void PicoTmpStateRestore(void *data)
   if (t == NULL)
     return;
 
-  memcpy(Pico.vram, t->vram, sizeof(Pico.vram));
-  memcpy(Pico.cram, t->cram, sizeof(Pico.cram));
-  memcpy(Pico.vsram, t->vsram, sizeof(Pico.vsram));
+  memcpy(PicoMem.vram, t->vram, sizeof(PicoMem.vram));
+  memcpy(PicoMem.cram, t->cram, sizeof(PicoMem.cram));
+  memcpy(PicoMem.vsram, t->vsram, sizeof(PicoMem.vsram));
   memcpy(&Pico.video, &t->video, sizeof(Pico.video));
   Pico.m.dirtyPal = 1;
 
diff --git a/pico/videoport.c b/pico/videoport.c
index 4da3ce3..072a941 100644
--- a/pico/videoport.c
+++ b/pico/videoport.c
@@ -11,7 +11,6 @@
 #define NEED_DMA_SOURCE
 #include "memory.h"
 
-int line_base_cycles;
 extern const unsigned char  hcounts_32[];
 extern const unsigned char  hcounts_40[];
 
@@ -33,23 +32,24 @@ static NOINLINE void VideoWrite128(u32 a, u16 d)
 {
   // nasty
   a = ((a & 2) >> 1) | ((a & 0x400) >> 9) | (a & 0x3FC) | ((a & 0x1F800) >> 1);
-  ((u8 *)Pico.vram)[a] = d;
+  ((u8 *)PicoMem.vram)[a] = d;
 }
 
 static void VideoWrite(u16 d)
 {
-  unsigned int a=Pico.video.addr;
+  unsigned int a = Pico.video.addr;
 
   switch (Pico.video.type)
   {
-    case 1: if(a&1) d=(u16)((d<<8)|(d>>8)); // If address is odd, bytes are swapped (which game needs this?)
-            Pico.vram [(a>>1)&0x7fff]=d;
+    case 1: if (a & 1)
+              d = (u16)((d << 8) | (d >> 8));
+            PicoMem.vram [(a >> 1) & 0x7fff] = d;
             if (a - ((unsigned)(Pico.video.reg[5]&0x7f) << 9) < 0x400)
               Pico.est.rendstatus |= PDRAW_DIRTY_SPRITES;
             break;
     case 3: Pico.m.dirtyPal = 1;
-            Pico.cram [(a>>1)&0x003f]=d; break; // wraps (Desert Strike)
-    case 5: Pico.vsram[(a>>1)&0x003f]=d; break;
+            PicoMem.cram [(a >> 1) & 0x3f] = d; break;
+    case 5: PicoMem.vsram[(a >> 1) & 0x3f] = d; break;
     case 0x81:
       a |= Pico.video.addr_u << 16;
       VideoWrite128(a, d);
@@ -68,9 +68,9 @@ static unsigned int VideoRead(void)
 
   switch (Pico.video.type)
   {
-    case 0: d=Pico.vram [a&0x7fff]; break;
-    case 8: d=Pico.cram [a&0x003f]; break;
-    case 4: d=Pico.vsram[a&0x003f]; break;
+    case 0: d=PicoMem.vram [a & 0x7fff]; break;
+    case 8: d=PicoMem.cram [a & 0x003f]; break;
+    case 4: d=PicoMem.vsram[a & 0x003f]; break;
     default:elprintf(EL_ANOMALY, "VDP read with bad type %i", Pico.video.type); break;
   }
 
@@ -106,7 +106,7 @@ static void DmaSlow(int len, unsigned int source)
   SekCyclesBurnRun(CheckDMA());
 
   if ((source & 0xe00000) == 0xe00000) { // Ram
-    base = (u16 *)Pico.ram;
+    base = (u16 *)PicoMem.ram;
     mask = 0xffff;
   }
   else if (PicoAHW & PAHW_MCD)
@@ -154,7 +154,7 @@ static void DmaSlow(int len, unsigned int source)
   switch (Pico.video.type)
   {
     case 1: // vram
-      r = Pico.vram;
+      r = PicoMem.vram;
       if (inc == 2 && !(a & 1) && a + len * 2 < 0x10000
           && !(((source + len - 1) ^ source) & ~mask))
       {
@@ -178,7 +178,7 @@ static void DmaSlow(int len, unsigned int source)
 
     case 3: // cram
       Pico.m.dirtyPal = 1;
-      r = Pico.cram;
+      r = PicoMem.cram;
       for (; len; len--)
       {
         r[(a / 2) & 0x3f] = base[source++ & mask];
@@ -188,7 +188,7 @@ static void DmaSlow(int len, unsigned int source)
       break;
 
     case 5: // vsram
-      r = Pico.vsram;
+      r = PicoMem.vsram;
       for (; len; len--)
       {
         r[(a / 2) & 0x3f] = base[source++ & mask];
@@ -219,9 +219,9 @@ static void DmaSlow(int len, unsigned int source)
 
 static void DmaCopy(int len)
 {
-  u16 a=Pico.video.addr;
-  unsigned char *vr = (unsigned char *) Pico.vram;
-  unsigned char inc=Pico.video.reg[0xf];
+  u16 a = Pico.video.addr;
+  u8 *vr = (u8 *)PicoMem.vram;
+  u8 inc = Pico.video.reg[0xf];
   int source;
   elprintf(EL_VDPDMA, "DmaCopy len %i [%u]", len, SekCyclesDone());
 
@@ -246,10 +246,10 @@ static void DmaCopy(int len)
 
 static NOINLINE void DmaFill(int data)
 {
-  unsigned short a=Pico.video.addr;
-  unsigned char *vr=(unsigned char *) Pico.vram;
-  unsigned char high = (unsigned char) (data >> 8);
-  unsigned char inc=Pico.video.reg[0xf];
+  u16 a = Pico.video.addr;
+  u8 *vr = (u8 *)PicoMem.vram;
+  u8 high = (u8)(data >> 8);
+  u8 inc = Pico.video.reg[0xf];
   int source;
   int len, l;
 
@@ -367,7 +367,7 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)
     // try avoiding the sync..
     if (Pico.m.scanline < 224 && (pvid->reg[1]&0x40) &&
         !(!pvid->pending &&
-          ((pvid->command & 0xc00000f0) == 0x40000010 && Pico.vsram[pvid->addr>>1] == d))
+          ((pvid->command & 0xc00000f0) == 0x40000010 && PicoMem.vsram[pvid->addr>>1] == d))
        )
       DrawSync(0);
 
@@ -421,7 +421,7 @@ PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d)
           return;
         }
 
-        if (num == 1 && !(d&0x40) && SekCyclesDone() - line_base_cycles <= 488-390)
+        if (num == 1 && !(d&0x40) && SekCyclesDone() - Pico.t.m68c_line_start <= 488-390)
           blank_on = 1;
         DrawSync(blank_on);
         pvid->reg[num]=(unsigned char)d;
@@ -512,7 +512,7 @@ PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a)
     unsigned int d;
     d=pv->status;
     //if (PicoOpt&POPT_ALT_RENDERER) d|=0x0020; // sprite collision (Shadow of the Beast)
-    if (SekCyclesDone() - line_base_cycles >= 488-88)
+    if (SekCyclesDone() - Pico.t.m68c_line_start >= 488-88)
       d|=0x0004; // H-Blank (Sonic3 vs)
 
     d |= ((pv->reg[1]&0x40)^0x40) >> 3;  // set V-Blank if display is disabled
@@ -544,7 +544,7 @@ PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a)
   {
     unsigned int d;
 
-    d = (SekCyclesDone() - line_base_cycles) & 0x1ff; // FIXME
+    d = (SekCyclesDone() - Pico.t.m68c_line_start) & 0x1ff; // FIXME
     if (Pico.video.reg[12]&1)
          d = hcounts_40[d];
     else d = hcounts_32[d];
@@ -588,7 +588,7 @@ unsigned char PicoVideoRead8CtlL(void)
   //if (PicoOpt&POPT_ALT_RENDERER) d|=0x0020; // sprite collision (Shadow of the Beast)
   d |= ((Pico.video.reg[1]&0x40)^0x40) >> 3;  // set V-Blank if display is disabled
   d |= (Pico.video.pending_ints&0x20)<<2;     // V-int pending?
-  if (SekCyclesDone() - line_base_cycles >= 488-88) d |= 4;    // H-Blank
+  if (SekCyclesDone() - Pico.t.m68c_line_start >= 488-88) d |= 4;    // H-Blank
   Pico.video.pending = 0;
   elprintf(EL_SR, "SR read (l): %02x @ %06x", d, SekPc);
   return d;
@@ -603,7 +603,7 @@ unsigned char PicoVideoRead8HV_H(void)
 // FIXME: broken
 unsigned char PicoVideoRead8HV_L(void)
 {
-  u32 d = (SekCyclesDone() - line_base_cycles) & 0x1ff; // FIXME
+  u32 d = (SekCyclesDone() - Pico.t.m68c_line_start) & 0x1ff; // FIXME
   if (Pico.video.reg[12]&1)
        d = hcounts_40[d];
   else d = hcounts_32[d];
diff --git a/platform/common/common.mak b/platform/common/common.mak
index 32b7a64..cd92f54 100644
--- a/platform/common/common.mak
+++ b/platform/common/common.mak
@@ -49,7 +49,7 @@ SRCS_COMMON += $(R)pico/draw_arm.S $(R)pico/draw2_arm.S
 endif
 ifeq "$(asm_memory)" "1"
 DEFINES += _ASM_MEMORY_C
-SRCS_COMMON += $(R)pico/memory_arm.s
+SRCS_COMMON += $(R)pico/memory_arm.S
 endif
 ifeq "$(asm_ym2612)" "1"
 DEFINES += _ASM_YM2612_C
@@ -62,7 +62,7 @@ SRCS_COMMON += $(R)pico/cd/misc_arm.s
 endif
 ifeq "$(asm_cdmemory)" "1"
 DEFINES += _ASM_CD_MEMORY_C
-SRCS_COMMON += $(R)pico/cd/memory_arm.s
+SRCS_COMMON += $(R)pico/cd/memory_arm.S
 endif
 ifeq "$(asm_32xdraw)" "1"
 DEFINES += _ASM_32X_DRAW
diff --git a/platform/common/emu.c b/platform/common/emu.c
index 6a8c940..9535bfd 100644
--- a/platform/common/emu.c
+++ b/platform/common/emu.c
@@ -889,7 +889,7 @@ int emu_save_load_game(int load, int sram)
 		{
 			if (PicoOpt & POPT_EN_MCD_RAMCART) {
 				sram_size = 0x12000;
-				sram_data = SRam.data;
+				sram_data = Pico.sv.data;
 				if (sram_data)
 					memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);
 			} else {
@@ -898,11 +898,11 @@ int emu_save_load_game(int load, int sram)
 				truncate  = 0; // the .brm may contain RAM cart data after normal brm
 			}
 		} else {
-			sram_size = SRam.size;
-			sram_data = SRam.data;
+			sram_size = Pico.sv.size;
+			sram_data = Pico.sv.data;
 		}
 		if (sram_data == NULL)
-			return 0; // SRam forcefully disabled for this game
+			return 0; // cart saves forcefully disabled for this game
 
 		if (load)
 		{
@@ -1262,9 +1262,9 @@ void emu_init(void)
 void emu_finish(void)
 {
 	// save SRAM
-	if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {
+	if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && Pico.sv.changed) {
 		emu_save_load_game(0, 1);
-		SRam.changed = 0;
+		Pico.sv.changed = 0;
 	}
 
 	if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {
@@ -1514,10 +1514,10 @@ void emu_loop(void)
 	emu_set_fastforward(0);
 
 	// save SRAM
-	if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {
+	if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && Pico.sv.changed) {
 		plat_status_msg_busy_first("Writing SRAM/BRAM...");
 		emu_save_load_game(0, 1);
-		SRam.changed = 0;
+		Pico.sv.changed = 0;
 	}
 
 	pemu_loop_end();
diff --git a/tools/mkoffsets.c b/tools/mkoffsets.c
index a5c475f..b371cf4 100644
--- a/tools/mkoffsets.c
+++ b/tools/mkoffsets.c
@@ -3,10 +3,22 @@
 
 #include "../pico/pico_int.h"
 
-#define DUMP(f, field) \
+#define DUMP(f, prefix, type, field) \
   fprintf(f, "#define %-20s 0x%02x\n", \
-    "OFS_" #field, \
-    (int)offsetof(struct PicoEState, field))
+    prefix #field, (int)offsetof(type, field))
+
+#define DUMP_P(f, field) \
+  fprintf(f, "#define %-20s 0x%04x\n", \
+    "OFS_Pico_" #field, (char *)&p.field - (char *)&p)
+
+#define DUMP_PS(f, s1, field) \
+  fprintf(f, "#define %-20s 0x%04x\n", \
+    "OFS_Pico_" #s1 "_" #field, (char *)&p.s1.field - (char *)&p)
+
+#define DUMP_EST(f, field) \
+	DUMP(f, "OFS_EST_", struct PicoEState, field)
+
+extern struct Pico p;
 
 int main(int argc, char *argv[])
 {
@@ -21,16 +33,31 @@ int main(int argc, char *argv[])
   }
 
   fprintf(f, "/* autogenerated by %s, do not edit */\n", argv[0]);
-  DUMP(f, DrawScanline);
-  DUMP(f, rendstatus);
-  DUMP(f, DrawLineDest);
-  DUMP(f, HighCol);
-  DUMP(f, HighPreSpr);
-  DUMP(f, Pico_video);
-  DUMP(f, Pico_vram);
-  DUMP(f, PicoOpt);
-  DUMP(f, Draw2FB);
-  DUMP(f, HighPal);
+  DUMP_PS(f, video, reg);
+  DUMP_PS(f, m, rotate);
+  DUMP_PS(f, m, z80Run);
+  DUMP_PS(f, m, dirtyPal);
+  DUMP_PS(f, m, hardware);
+  DUMP_PS(f, m, z80_reset);
+  DUMP_PS(f, m, sram_reg);
+  DUMP_P (f, sv);
+  DUMP_PS(f, sv, data);
+  DUMP_PS(f, sv, start);
+  DUMP_PS(f, sv, end);
+  DUMP_PS(f, sv, flags);
+  DUMP_P (f, rom);
+  DUMP_P (f, romsize);
+  DUMP_EST(f, DrawScanline);
+  DUMP_EST(f, rendstatus);
+  DUMP_EST(f, DrawLineDest);
+  DUMP_EST(f, HighCol);
+  DUMP_EST(f, HighPreSpr);
+  DUMP_EST(f, Pico);
+  DUMP_EST(f, PicoMem_vram);
+  DUMP_EST(f, PicoMem_cram);
+  DUMP_EST(f, PicoOpt);
+  DUMP_EST(f, Draw2FB);
+  DUMP_EST(f, HighPal);
   fclose(f);
 
   return 0;
-- 
2.39.2