X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2Fcd%2FMemory.c;h=1be1823a14fabb8ed8e893bb2cef5c003654a197;hb=3aa1e148a28da9b4e10e824984f7b3a4908b1ace;hp=fc6e4de54c48bfe725ba7d4d27cc9c176632cac0;hpb=2433f409129279095926eb00cf8ab429738f80dd;p=picodrive.git

diff --git a/Pico/cd/Memory.c b/Pico/cd/Memory.c
index fc6e4de..1be1823 100644
--- a/Pico/cd/Memory.c
+++ b/Pico/cd/Memory.c
@@ -1,10 +1,6 @@
-// This is part of Pico Library
-
-// (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+// Memory I/O handlers for Sega/Mega CD.
+// Loosely based on Gens code.
+// (c) Copyright 2007, Grazvydas "notaz" Ignotas
 
 // A68K no longer supported here
 
@@ -12,26 +8,28 @@
 
 #include "../PicoInt.h"
 
-#include "../sound/sound.h"
 #include "../sound/ym2612.h"
 #include "../sound/sn76496.h"
 
 #include "gfx_cd.h"
 #include "pcm.h"
 
+#ifndef UTYPES_DEFINED
 typedef unsigned char  u8;
 typedef unsigned short u16;
 typedef unsigned int   u32;
+#define UTYPES_DEFINED
+#endif
 
 //#define __debug_io
 //#define __debug_io2
 
-//#define rdprintf dprintf
-#define rdprintf(...)
+#define rdprintf dprintf
+//#define rdprintf(...)
 //#define wrdprintf dprintf
 #define wrdprintf(...)
-//#define plprintf dprintf
-#define plprintf(...)
+#define plprintf dprintf
+//#define plprintf(...)
 
 // -----------------------------------------------------------------
 
@@ -118,6 +116,7 @@ void m68k_reg_write8(u32 a, u32 d)
       Pico_mcd->m.busreq = d;
       return;
     case 2:
+      dprintf("m68k: prg wp=%02x", d);
       Pico_mcd->s68k_regs[2] = d; // really use s68k side register
       return;
     case 3: {
@@ -294,9 +293,7 @@ void s68k_reg_write8(u32 a, u32 d)
       if (d&4) {
         if ((d ^ dold) & 5) {
           d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit
-#ifdef _ASM_CD_MEMORY_C
           PicoMemResetCD(d);
-#endif
         }
 #ifdef _ASM_CD_MEMORY_C
         if ((d ^ dold) & 0x1d)
@@ -314,9 +311,7 @@ void s68k_reg_write8(u32 a, u32 d)
             d |= (dold&1) ? 2 : 1; // then give it to the one which had bank0 in 1M mode
           }
           wram_1M_to_2M(Pico_mcd->word_ram2M);
-#ifdef _ASM_CD_MEMORY_C
           PicoMemResetCD(d);
-#endif
         }
         else
           d |= dold&1;
@@ -405,10 +400,10 @@ static void OtherWrite8End(u32 a, u32 d, int realsize)
 {
   if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }
 
-  dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);
+  dprintf("m68k FIXME: strange w%i: [%06x], %08x @%06x", realsize, a&0xffffff, d, SekPc);
 }
 
-
+#define _CD_MEMORY_C
 #undef _ASM_MEMORY_C
 #include "../MemoryCmn.c"
 #include "cell_map.c"
@@ -420,9 +415,9 @@ static void OtherWrite8End(u32 a, u32 d, int realsize)
 
 //u8 PicoReadM68k8_(u32 a);
 #ifdef _ASM_CD_MEMORY_C
-u8 PicoReadM68k8(u32 a);
+u32 PicoReadM68k8(u32 a);
 #else
-static u8 PicoReadM68k8(u32 a)
+static u32 PicoReadM68k8(u32 a)
 {
   u32 d=0;
 
@@ -433,7 +428,7 @@ static u8 PicoReadM68k8(u32 a)
   if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios
 
   // prg RAM
-  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {
+  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {
     u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];
     d = *(prg_bank+((a^1)&0x1ffff));
     goto end;
@@ -471,17 +466,17 @@ static u8 PicoReadM68k8(u32 a)
 #ifdef __debug_io
   dprintf("r8 : %06x,   %02x @%06x", a&0xffffff, (u8)d, SekPc);
 #endif
-  return (u8)d;
+  return d;
 }
 #endif
 
 
 #ifdef _ASM_CD_MEMORY_C
-u16 PicoReadM68k16(u32 a);
+u32 PicoReadM68k16(u32 a);
 #else
-static u16 PicoReadM68k16(u32 a)
+static u32 PicoReadM68k16(u32 a)
 {
-  u16 d=0;
+  u32 d=0;
 
   if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram
 
@@ -490,7 +485,7 @@ static u16 PicoReadM68k16(u32 a)
   if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios
 
   // prg RAM
-  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {
+  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {
     u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];
     wrdprintf("m68k_prgram r16: [%i,%06x] @%06x", Pico_mcd->s68k_regs[3]>>6, a, SekPc);
     d = *(u16 *)(prg_bank+(a&0x1fffe));
@@ -518,7 +513,7 @@ static u16 PicoReadM68k16(u32 a)
   if ((a&0xffffc0)==0xa12000)
     rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);
 
-  d = (u16)OtherRead16(a, 16);
+  d = OtherRead16(a, 16);
 
   if ((a&0xffffc0)==0xa12000)
     rdprintf("ret = %04x", d);
@@ -547,7 +542,7 @@ static u32 PicoReadM68k32(u32 a)
   if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios
 
   // prg RAM
-  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {
+  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {
     u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];
     u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));
     d = (pm[0]<<16)|pm[1];
@@ -595,7 +590,6 @@ static u32 PicoReadM68k32(u32 a)
 
 
 // -----------------------------------------------------------------
-//                            Write Ram
 
 #ifdef _ASM_CD_MEMORY_C
 void PicoWriteM68k8(u32 a,u8 d);
@@ -617,7 +611,7 @@ static void PicoWriteM68k8(u32 a,u8 d)
   a&=0xffffff;
 
   // prg RAM
-  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {
+  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {
     u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];
     *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;
     return;
@@ -645,7 +639,7 @@ static void PicoWriteM68k8(u32 a,u8 d)
     return;
   }
 
-  OtherWrite8(a,d,8);
+  OtherWrite8(a,d);
 }
 #endif
 
@@ -668,7 +662,7 @@ static void PicoWriteM68k16(u32 a,u16 d)
   a&=0xfffffe;
 
   // prg RAM
-  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {
+  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {
     u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];
     wrdprintf("m68k_prgram w16: [%i,%06x] %04x @%06x", Pico_mcd->s68k_regs[3]>>6, a, d, SekPc);
     *(u16 *)(prg_bank+(a&0x1fffe))=d;
@@ -698,7 +692,7 @@ static void PicoWriteM68k16(u32 a,u16 d)
       Pico_mcd->s68k_regs[0xe] = d >> 8;
 #ifdef USE_POLL_DETECT
       if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) {
-        SekSetStopS68k(0); s68k_poll_adclk = -1;
+        SekSetStopS68k(0); s68k_poll_adclk = 0;
         plprintf("s68k poll release, a=%02x\n", a);
       }
 #endif
@@ -734,7 +728,7 @@ static void PicoWriteM68k32(u32 a,u32 d)
   a&=0xfffffe;
 
   // prg RAM
-  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&2)) {
+  if ((a&0xfe0000)==0x020000 && (Pico_mcd->m.busreq&3)!=1) {
     u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];
     u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));
     pm[0]=(u16)(d>>16); pm[1]=(u16)d;
@@ -777,12 +771,14 @@ static void PicoWriteM68k32(u32 a,u32 d)
 #endif
 
 
+// -----------------------------------------------------------------
+//                            S68k
 // -----------------------------------------------------------------
 
 #ifdef _ASM_CD_MEMORY_C
-u8 PicoReadS68k8(u32 a);
+u32 PicoReadS68k8(u32 a);
 #else
-static u8 PicoReadS68k8(u32 a)
+static u32 PicoReadS68k8(u32 a)
 {
   u32 d=0;
 
@@ -817,7 +813,7 @@ static u8 PicoReadS68k8(u32 a)
     // test: batman returns
     wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);
     if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?
-      int bank = !(Pico_mcd->s68k_regs[3]&1);
+      int bank = (Pico_mcd->s68k_regs[3]&1)^1;
       d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];
       if (a&1) d &= 0x0f;
       else d >>= 4;
@@ -836,7 +832,7 @@ static u8 PicoReadS68k8(u32 a)
     wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);
 //    if (!(Pico_mcd->s68k_regs[3]&4))
 //      dprintf("s68k_wram1M FIXME: wrong mode");
-    bank = !(Pico_mcd->s68k_regs[3]&1);
+    bank = (Pico_mcd->s68k_regs[3]&1)^1;
     d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];
     wrdprintf("ret = %02x", (u8)d);
     goto end;
@@ -870,16 +866,15 @@ static u8 PicoReadS68k8(u32 a)
 #ifdef __debug_io2
   dprintf("s68k r8 : %06x,   %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);
 #endif
-  return (u8)d;
+  return d;
 }
 #endif
 
 
-//u16 PicoReadS68k16_(u32 a);
 #ifdef _ASM_CD_MEMORY_C
-u16 PicoReadS68k16(u32 a);
+u32 PicoReadS68k16(u32 a);
 #else
-static u16 PicoReadS68k16(u32 a)
+static u32 PicoReadS68k16(u32 a)
 {
   u32 d=0;
 
@@ -908,7 +903,7 @@ static u16 PicoReadS68k16(u32 a)
   if ((a&0xfc0000)==0x080000) { // 080000-0bffff
     wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);
     if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?
-      int bank = !(Pico_mcd->s68k_regs[3]&1);
+      int bank = (Pico_mcd->s68k_regs[3]&1)^1;
       d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];
       d |= d << 4; d &= ~0xf0;
       dprintf("FIXME: decode");
@@ -926,7 +921,7 @@ static u16 PicoReadS68k16(u32 a)
     wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);
 //    if (!(Pico_mcd->s68k_regs[3]&4))
 //      dprintf("s68k_wram1M FIXME: wrong mode");
-    bank = !(Pico_mcd->s68k_regs[3]&1);
+    bank = (Pico_mcd->s68k_regs[3]&1)^1;
     d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));
     wrdprintf("ret = %04x", d);
     goto end;
@@ -1000,7 +995,7 @@ static u32 PicoReadS68k32(u32 a)
   if ((a&0xfc0000)==0x080000) { // 080000-0bffff
     wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);
     if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?
-      int bank = !(Pico_mcd->s68k_regs[3]&1);
+      int bank = (Pico_mcd->s68k_regs[3]&1)^1;
       a >>= 1;
       d  = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;
       d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];
@@ -1019,7 +1014,7 @@ static u32 PicoReadS68k32(u32 a)
     wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);
 //    if (!(Pico_mcd->s68k_regs[3]&4))
 //      dprintf("s68k_wram1M FIXME: wrong mode");
-    bank = !(Pico_mcd->s68k_regs[3]&1);
+    bank = (Pico_mcd->s68k_regs[3]&1)^1;
     u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];
     wrdprintf("ret = %08x", d);
     goto end;
@@ -1076,7 +1071,7 @@ static u32 PicoReadS68k32(u32 a)
 /* check: jaguar xj 220 (draws entire world using decode) */
 static void decode_write8(u32 a, u8 d, int r3)
 {
-  u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);
+  u8 *pd = Pico_mcd->word_ram1M[(r3 & 1)^1] + (((a>>1)^1)&0x1ffff);
   u8 oldmask = (a&1) ? 0xf0 : 0x0f;
 
   r3 &= 0x18;
@@ -1099,7 +1094,7 @@ do_it:
 
 static void decode_write16(u32 a, u16 d, int r3)
 {
-  u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);
+  u8 *pd = Pico_mcd->word_ram1M[(r3 & 1)^1] + (((a>>1)^1)&0x1ffff);
 
   //if ((a & 0x3ffff) < 0x28000) return;
 
@@ -1139,7 +1134,7 @@ static void PicoWriteS68k8(u32 a,u8 d)
   // prg RAM
   if (a < 0x80000) {
     u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));
-    *pm=d;
+    if (a >= (Pico_mcd->s68k_regs[2]<<8)) *pm=d;
     return;
   }
 
@@ -1174,7 +1169,7 @@ static void PicoWriteS68k8(u32 a,u8 d)
       wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);
 //    if (!(Pico_mcd->s68k_regs[3]&4))
 //      dprintf("s68k_wram1M FIXME: wrong mode");
-    bank = !(Pico_mcd->s68k_regs[3]&1);
+    bank = (Pico_mcd->s68k_regs[3]&1)^1;
     *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;
     return;
   }
@@ -1215,7 +1210,8 @@ static void PicoWriteS68k16(u32 a,u16 d)
   // prg RAM
   if (a < 0x80000) {
     wrdprintf("s68k_prgram w16: [%06x] %04x @%06x", a, d, SekPcS68k);
-    *(u16 *)(Pico_mcd->prg_ram+a)=d;
+    if (a >= (Pico_mcd->s68k_regs[2]<<8)) // needed for Dungeon Explorer
+      *(u16 *)(Pico_mcd->prg_ram+a)=d;
     return;
   }
 
@@ -1256,7 +1252,7 @@ static void PicoWriteS68k16(u32 a,u16 d)
       wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);
 //    if (!(Pico_mcd->s68k_regs[3]&4))
 //      dprintf("s68k_wram1M FIXME: wrong mode");
-    bank = !(Pico_mcd->s68k_regs[3]&1);
+    bank = (Pico_mcd->s68k_regs[3]&1)^1;
     *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;
     return;
   }
@@ -1299,8 +1295,10 @@ static void PicoWriteS68k32(u32 a,u32 d)
 
   // prg RAM
   if (a < 0x80000) {
-    u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);
-    pm[0]=(u16)(d>>16); pm[1]=(u16)d;
+    if (a >= (Pico_mcd->s68k_regs[2]<<8)) {
+      u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);
+      pm[0]=(u16)(d>>16); pm[1]=(u16)d;
+    }
     return;
   }
 
@@ -1344,7 +1342,7 @@ static void PicoWriteS68k32(u32 a,u32 d)
       wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);
 //    if (!(Pico_mcd->s68k_regs[3]&4))
 //      dprintf("s68k_wram1M FIXME: wrong mode");
-    bank = !(Pico_mcd->s68k_regs[3]&1);
+    bank = (Pico_mcd->s68k_regs[3]&1)^1;
     pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));
     pm[0]=(u16)(d>>16); pm[1]=(u16)d;
     return;
@@ -1385,7 +1383,7 @@ static void PicoWriteS68k32(u32 a,u32 d)
 // -----------------------------------------------------------------
 
 
-#if defined(EMU_C68K)
+#ifdef EMU_C68K
 static __inline int PicoMemBaseM68k(u32 pc)
 {
   if ((pc&0xe00000)==0xe00000)
@@ -1399,7 +1397,7 @@ static __inline int PicoMemBaseM68k(u32 pc)
     if (!(Pico_mcd->s68k_regs[3]&4))
       return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram
     if (pc < 0x220000) {
-      int bank = (Pico_mcd->s68k_regs[3]&1);
+      int bank = Pico_mcd->s68k_regs[3]&1;
       return (int)Pico_mcd->word_ram1M[bank] - 0x200000;
     }
   }
@@ -1413,12 +1411,12 @@ static __inline int PicoMemBaseM68k(u32 pc)
 
 static u32 PicoCheckPcM68k(u32 pc)
 {
-  pc-=PicoCpu.membase; // Get real pc
+  pc-=PicoCpuCM68k.membase; // Get real pc
   pc&=0xfffffe;
 
-  PicoCpu.membase=PicoMemBaseM68k(pc);
+  PicoCpuCM68k.membase=PicoMemBaseM68k(pc);
 
-  return PicoCpu.membase+pc;
+  return PicoCpuCM68k.membase+pc;
 }
 
 
@@ -1431,7 +1429,7 @@ static __inline int PicoMemBaseS68k(u32 pc)
     return (int)Pico_mcd->word_ram2M - 0x080000;
 
   if ((pc&0xfe0000)==0x0c0000) {        // word RAM 1M area
-    int bank = !(Pico_mcd->s68k_regs[3]&1);
+    int bank = (Pico_mcd->s68k_regs[3]&1)^1;
     return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;
   }
 
@@ -1444,37 +1442,101 @@ static __inline int PicoMemBaseS68k(u32 pc)
 
 static u32 PicoCheckPcS68k(u32 pc)
 {
-  pc-=PicoCpuS68k.membase; // Get real pc
+  pc-=PicoCpuCS68k.membase; // Get real pc
   pc&=0xfffffe;
 
-  PicoCpuS68k.membase=PicoMemBaseS68k(pc);
+  PicoCpuCS68k.membase=PicoMemBaseS68k(pc);
 
-  return PicoCpuS68k.membase+pc;
+  return PicoCpuCS68k.membase+pc;
 }
 #endif
 
+#ifndef _ASM_CD_MEMORY_C
+void PicoMemResetCD(int r3)
+{
+#ifdef EMU_F68K
+  // update fetchmap..
+  int i;
+  if (!(r3 & 4))
+  {
+    for (i = M68K_FETCHBANK1*2/16; (i<<(24-FAMEC_FETCHBITS)) < 0x240000; i++)
+      PicoCpuFM68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram2M - 0x200000;
+  }
+  else
+  {
+    for (i = M68K_FETCHBANK1*2/16; (i<<(24-FAMEC_FETCHBITS)) < 0x220000; i++)
+      PicoCpuFM68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram1M[r3 & 1] - 0x200000;
+    for (i = M68K_FETCHBANK1*0x0c/0x100; (i<<(24-FAMEC_FETCHBITS)) < 0x0e0000; i++)
+      PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram1M[(r3&1)^1] - 0x0c0000;
+  }
+#endif
+}
+#endif
 
-void PicoMemSetupCD()
+PICO_INTERNAL void PicoMemSetupCD(void)
 {
   dprintf("PicoMemSetupCD()");
 #ifdef EMU_C68K
   // Setup m68k memory callbacks:
-  PicoCpu.checkpc=PicoCheckPcM68k;
-  PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;
-  PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;
-  PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;
-  PicoCpu.write8 =PicoWriteM68k8;
-  PicoCpu.write16=PicoWriteM68k16;
-  PicoCpu.write32=PicoWriteM68k32;
+  PicoCpuCM68k.checkpc=PicoCheckPcM68k;
+  PicoCpuCM68k.fetch8 =PicoCpuCM68k.read8 =PicoReadM68k8;
+  PicoCpuCM68k.fetch16=PicoCpuCM68k.read16=PicoReadM68k16;
+  PicoCpuCM68k.fetch32=PicoCpuCM68k.read32=PicoReadM68k32;
+  PicoCpuCM68k.write8 =PicoWriteM68k8;
+  PicoCpuCM68k.write16=PicoWriteM68k16;
+  PicoCpuCM68k.write32=PicoWriteM68k32;
+  // s68k
+  PicoCpuCS68k.checkpc=PicoCheckPcS68k;
+  PicoCpuCS68k.fetch8 =PicoCpuCS68k.read8 =PicoReadS68k8;
+  PicoCpuCS68k.fetch16=PicoCpuCS68k.read16=PicoReadS68k16;
+  PicoCpuCS68k.fetch32=PicoCpuCS68k.read32=PicoReadS68k32;
+  PicoCpuCS68k.write8 =PicoWriteS68k8;
+  PicoCpuCS68k.write16=PicoWriteS68k16;
+  PicoCpuCS68k.write32=PicoWriteS68k32;
+#endif
+#ifdef EMU_F68K
+  // m68k
+  PicoCpuFM68k.read_byte =PicoReadM68k8;
+  PicoCpuFM68k.read_word =PicoReadM68k16;
+  PicoCpuFM68k.read_long =PicoReadM68k32;
+  PicoCpuFM68k.write_byte=PicoWriteM68k8;
+  PicoCpuFM68k.write_word=PicoWriteM68k16;
+  PicoCpuFM68k.write_long=PicoWriteM68k32;
   // s68k
-  PicoCpuS68k.checkpc=PicoCheckPcS68k;
-  PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;
-  PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;
-  PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;
-  PicoCpuS68k.write8 =PicoWriteS68k8;
-  PicoCpuS68k.write16=PicoWriteS68k16;
-  PicoCpuS68k.write32=PicoWriteS68k32;
+  PicoCpuFS68k.read_byte =PicoReadS68k8;
+  PicoCpuFS68k.read_word =PicoReadS68k16;
+  PicoCpuFS68k.read_long =PicoReadS68k32;
+  PicoCpuFS68k.write_byte=PicoWriteS68k8;
+  PicoCpuFS68k.write_word=PicoWriteS68k16;
+  PicoCpuFS68k.write_long=PicoWriteS68k32;
+
+  // setup FAME fetchmap
+  {
+    int i;
+    // M68k
+    // by default, point everything to fitst 64k of ROM (BIOS)
+    for (i = 0; i < M68K_FETCHBANK1; i++)
+      PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom - (i<<(24-FAMEC_FETCHBITS));
+    // now real ROM (BIOS)
+    for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)
+      PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.rom;
+    // .. and RAM
+    for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)
+      PicoCpuFM68k.Fetch[i] = (unsigned int)Pico.ram - (i<<(24-FAMEC_FETCHBITS));
+    // S68k
+    // PRG RAM is default
+    for (i = 0; i < M68K_FETCHBANK1; i++)
+      PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->prg_ram - (i<<(24-FAMEC_FETCHBITS));
+    // real PRG RAM
+    for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0x80000; i++)
+      PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->prg_ram;
+    // WORD RAM 2M area
+    for (i = M68K_FETCHBANK1*0x08/0x100; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0xc0000; i++)
+      PicoCpuFS68k.Fetch[i] = (unsigned int)Pico_mcd->word_ram2M - 0x80000;
+    // PicoMemResetCD() will setup word ram for both
+  }
 #endif
+
   // m68k_poll_addr = m68k_poll_cnt = 0;
   s68k_poll_adclk = s68k_poll_cnt = 0;
 }
@@ -1482,33 +1544,33 @@ void PicoMemSetupCD()
 
 #ifdef EMU_M68K
 unsigned char  PicoReadCD8w (unsigned int a) {
-	return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);
+	return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k8(a) : PicoReadM68k8(a);
 }
 unsigned short PicoReadCD16w(unsigned int a) {
-	return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);
+	return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k16(a) : PicoReadM68k16(a);
 }
 unsigned int   PicoReadCD32w(unsigned int a) {
-	return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);
+	return m68ki_cpu_p == &PicoCpuMS68k ? PicoReadS68k32(a) : PicoReadM68k32(a);
 }
 void PicoWriteCD8w (unsigned int a, unsigned char d) {
-	if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);
+	if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);
 }
 void PicoWriteCD16w(unsigned int a, unsigned short d) {
-	if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);
+	if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);
 }
 void PicoWriteCD32w(unsigned int a, unsigned int d) {
-	if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);
+	if (m68ki_cpu_p == &PicoCpuMS68k) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);
 }
 
 // these are allowed to access RAM
 unsigned int  m68k_read_pcrelative_CD8 (unsigned int a) {
   a&=0xffffff;
-  if(m68ki_cpu_p == &PicoS68kCPU) {
+  if(m68ki_cpu_p == &PicoCpuMS68k) {
     if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram
     if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)
       return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));
     if ((a&0xfe0000)==0x0c0000 &&  (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)
-      int bank = !(Pico_mcd->s68k_regs[3]&1);
+      int bank = (Pico_mcd->s68k_regs[3]&1)^1;
       return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));
     }
     dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);
@@ -1529,12 +1591,12 @@ unsigned int  m68k_read_pcrelative_CD8 (unsigned int a) {
 }
 unsigned int  m68k_read_pcrelative_CD16(unsigned int a) {
   a&=0xffffff;
-  if(m68ki_cpu_p == &PicoS68kCPU) {
+  if(m68ki_cpu_p == &PicoCpuMS68k) {
     if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram
     if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)
       return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));
     if ((a&0xfe0000)==0x0c0000 &&  (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)
-      int bank = !(Pico_mcd->s68k_regs[3]&1);
+      int bank = (Pico_mcd->s68k_regs[3]&1)^1;
       return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));
     }
     dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);
@@ -1556,12 +1618,12 @@ unsigned int  m68k_read_pcrelative_CD16(unsigned int a) {
 unsigned int  m68k_read_pcrelative_CD32(unsigned int a) {
   u16 *pm;
   a&=0xffffff;
-  if(m68ki_cpu_p == &PicoS68kCPU) {
+  if(m68ki_cpu_p == &PicoCpuMS68k) {
     if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram
     if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)
       { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }
     if ((a&0xfe0000)==0x0c0000 &&  (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)
-      int bank = !(Pico_mcd->s68k_regs[3]&1);
+      int bank = (Pico_mcd->s68k_regs[3]&1)^1;
       pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));
       return (pm[0]<<16)|pm[1];
     }