X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2F32x%2Fmemory.c;h=a95db24cbf42322e11c065f7deb41cb982af080c;hb=be26eb239bd06fd83ab740dca5582841eac652dd;hp=7104cef6d32d88fdc5dcdaf757b06b1f50c23dff;hpb=e05b81fc5b3f640496795ced5d893ece4cc51c2d;p=picodrive.git

diff --git a/pico/32x/memory.c b/pico/32x/memory.c
index 7104cef..a95db24 100644
--- a/pico/32x/memory.c
+++ b/pico/32x/memory.c
@@ -1,4 +1,10 @@
 /*
+ * PicoDrive
+ * (C) notaz, 2009,2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ *
  * SH2 addr lines:
  * iii. .cc. ..xx *   // Internal, Cs, x
  *
@@ -224,12 +230,12 @@ static void p32x_reg_write8(u32 a, u32 d)
     case 3: // irq ctl
       if ((d & 1) && !(Pico32x.sh2irqi[0] & P32XI_CMD)) {
         Pico32x.sh2irqi[0] |= P32XI_CMD;
-        p32x_update_irls();
+        p32x_update_irls(0);
         SekEndRun(16);
       }
       if ((d & 2) && !(Pico32x.sh2irqi[1] & P32XI_CMD)) {
         Pico32x.sh2irqi[1] |= P32XI_CMD;
-        p32x_update_irls();
+        p32x_update_irls(0);
         SekEndRun(16);
       }
       return;
@@ -341,6 +347,9 @@ static void p32x_vdp_write8(u32 a, u32 d)
         Pico32x.dirty_pal = 1;
       r[0] = (r[0] & P32XV_nPAL) | (d & 0xff);
       break;
+    case 0x03: // shift (for pp mode)
+      r[2 / 2] = d & 1;
+      break;
     case 0x05: // fill len
       r[4 / 2] = d & 0xff;
       break;
@@ -349,7 +358,7 @@ static void p32x_vdp_write8(u32 a, u32 d)
       Pico32x.pending_fb = d;
       // if we are blanking and FS bit is changing
       if (((r[0x0a/2] & P32XV_VBLK) || (r[0] & P32XV_Mx) == 0) && ((r[0x0a/2] ^ d) & P32XV_FS)) {
-        r[0x0a/2] ^= 1;
+        r[0x0a/2] ^= P32XV_FS;
 	Pico32xSwapDRAM(d ^ 1);
         elprintf(EL_32X, "VDP FS: %d", r[0x0a/2] & P32XV_FS);
       }
@@ -428,7 +437,7 @@ static void p32x_sh2reg_write8(u32 a, u32 d, int cpuid)
       Pico32x.sh2irq_mask[cpuid] = d & 0x8f;
       Pico32x.sh2_regs[0] &= ~0x80;
       Pico32x.sh2_regs[0] |= d & 0x80;
-      p32x_update_irls();
+      p32x_update_irls(1);
       return;
     case 5: // H count
       Pico32x.sh2_regs[4 / 2] = d & 0xff;
@@ -483,7 +492,7 @@ static void p32x_sh2reg_write16(u32 a, u32 d, int cpuid)
   return;
 
 irls:
-  p32x_update_irls();
+  p32x_update_irls(1);
 }
 
 // ------------------------------------------------------------------
@@ -908,7 +917,7 @@ static void bank_switch(int b)
 #ifdef EMU_F68K
   // setup FAME fetchmap
   for (rs = 0x90; rs < 0xa0; rs++)
-    PicoCpuFM68k.Fetch[rs] = (u32)Pico.rom + bank - 0x900000;
+    PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom + bank - 0x900000;
 #endif
 }
 
@@ -947,7 +956,7 @@ static u32 sh2_read8_cs0(u32 a, int id)
   if (id == 1 && a < sizeof(Pico32xMem->sh2_rom_s))
     return Pico32xMem->sh2_rom_s[a ^ 1];
 
-  if ((a & 0x3ff00) == 0x4200) {
+  if ((a & 0x3fe00) == 0x4200) {
     d = Pico32xMem->pal[(a & 0x1ff) / 2];
     goto out_16to8;
   }
@@ -1001,7 +1010,7 @@ static u32 sh2_read16_cs0(u32 a, int id)
   if (id == 1 && a < sizeof(Pico32xMem->sh2_rom_s))
     return *(u16 *)(Pico32xMem->sh2_rom_s + a);
 
-  if ((a & 0x3ff00) == 0x4200) {
+  if ((a & 0x3fe00) == 0x4200) {
     d = Pico32xMem->pal[(a & 0x1ff) / 2];
     goto out;
   }
@@ -1050,8 +1059,9 @@ static int REGPARM(3) sh2_write8_cs0(u32 a, u32 d, int id)
   return sh2_write8_unmapped(a, d, id);
 }
 
+/* quirk: in both normal and overwrite areas only nonzero values go through */
 #define sh2_write8_dramN(n) \
-  if (!(a & 0x20000) || d) { \
+  if ((d & 0xff) != 0) { \
     u8 *dram = (u8 *)Pico32xMem->dram[n]; \
     dram[(a & 0x1ffff) ^ 1] = d; \
   } \
@@ -1325,7 +1335,7 @@ static void get_bios(void)
   // M68K ROM
   if (p32x_bios_g != NULL) {
     elprintf(EL_STATUS|EL_32X, "32x: using supplied 68k BIOS");
-    Byteswap(Pico32xMem->m68k_rom, p32x_bios_g, 0x100);
+    Byteswap(Pico32xMem->m68k_rom, p32x_bios_g, sizeof(Pico32xMem->m68k_rom));
   }
   else {
     // generate 68k ROM
@@ -1347,7 +1357,9 @@ static void get_bios(void)
 #endif
   }
   // fill remaining m68k_rom page with game ROM
-  memcpy(Pico32xMem->m68k_rom + 0x100, Pico.rom + 0x100, sizeof(Pico32xMem->m68k_rom) - 0x100);
+  memcpy(Pico32xMem->m68k_rom_bank + sizeof(Pico32xMem->m68k_rom),
+    Pico.rom + sizeof(Pico32xMem->m68k_rom),
+    sizeof(Pico32xMem->m68k_rom_bank) - sizeof(Pico32xMem->m68k_rom));
 
   // MSH2
   if (p32x_bios_m != NULL) {
@@ -1419,7 +1431,7 @@ void PicoMemSetup32x(void)
   unsigned int rs;
   int i;
 
-  Pico32xMem = calloc(1, sizeof(*Pico32xMem));
+  Pico32xMem = plat_mmap(0x06000000, sizeof(*Pico32xMem), 0, 0);
   if (Pico32xMem == NULL) {
     elprintf(EL_STATUS, "OOM");
     return;
@@ -1435,9 +1447,9 @@ void PicoMemSetup32x(void)
   // m68k_map_unmap(0x000000, 0x3fffff);
 
   // MD ROM area
-  rs = sizeof(Pico32xMem->m68k_rom);
-  cpu68k_map_set(m68k_read8_map,   0x000000, rs - 1, Pico32xMem->m68k_rom, 0);
-  cpu68k_map_set(m68k_read16_map,  0x000000, rs - 1, Pico32xMem->m68k_rom, 0);
+  rs = sizeof(Pico32xMem->m68k_rom_bank);
+  cpu68k_map_set(m68k_read8_map,   0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0);
+  cpu68k_map_set(m68k_read16_map,  0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0);
   cpu68k_map_set(m68k_write8_map,  0x000000, rs - 1, PicoWrite8_hint, 1); // TODO verify
   cpu68k_map_set(m68k_write16_map, 0x000000, rs - 1, PicoWrite16_hint, 1);
 
@@ -1449,9 +1461,9 @@ void PicoMemSetup32x(void)
   cpu68k_map_set(m68k_read16_map,  0x880000, 0x880000 + rs - 1, Pico.rom, 0);
 #ifdef EMU_F68K
   // setup FAME fetchmap
-  PicoCpuFM68k.Fetch[0] = (u32)Pico32xMem->m68k_rom;
+  PicoCpuFM68k.Fetch[0] = (unsigned long)Pico32xMem->m68k_rom;
   for (rs = 0x88; rs < 0x90; rs++)
-    PicoCpuFM68k.Fetch[rs] = (u32)Pico.rom - 0x880000;
+    PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom - 0x880000;
 #endif
 
   // 32X ROM (banked)
@@ -1517,8 +1529,8 @@ void PicoMemSetup32x(void)
 
   msh2.read8_map   = ssh2.read8_map   = sh2_read8_map;
   msh2.read16_map  = ssh2.read16_map  = sh2_read16_map;
-  msh2.write8_tab  = ssh2.write8_tab  = (const void **)sh2_write8_map;
-  msh2.write16_tab = ssh2.write16_tab = (const void **)sh2_write16_map;
+  msh2.write8_tab  = ssh2.write8_tab  = (const void **)(void *)sh2_write8_map;
+  msh2.write16_tab = ssh2.write16_tab = (const void **)(void *)sh2_write16_map;
 
   // setup poll detector
   m68k_poll.flag = P32XF_68KPOLL;
@@ -1527,6 +1539,23 @@ void PicoMemSetup32x(void)
   sh2_poll[0].cyc_max = 21;
   sh2_poll[1].flag = P32XF_SSH2POLL;
   sh2_poll[1].cyc_max = 16;
+
+#ifdef DRC_SH2
+  sh2_drc_mem_setup(&msh2);
+  sh2_drc_mem_setup(&ssh2);
+#endif
+}
+
+void Pico32xStateLoaded(void)
+{
+  bank_switch(Pico32x.regs[4 / 2]);
+  Pico32xSwapDRAM((Pico32x.vdp_regs[0x0a / 2] & P32XV_FS) ^ P32XV_FS);
+  p32x_poll_event(3, 0);
+  Pico32x.dirty_pal = 1;
+  memset(Pico32xMem->pwm, 0, sizeof(Pico32xMem->pwm));
+#ifdef DRC_SH2
+  sh2_drc_flush_all();
+#endif
 }
 
 // vim:shiftwidth=2:expandtab