.cue support, Pico stubs

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@433 be3aeb3a-fb24-0410-a615-afba39da0efa

Pico/Pico/Memory.c

@@ -0,0 +1,179 @@
+#include "../PicoInt.h"
+
+#ifndef UTYPES_DEFINED
+typedef unsigned char  u8;
+typedef unsigned short u16;
+typedef unsigned int   u32;
+#define UTYPES_DEFINED
+#endif
+
+// -----------------------------------------------------------------
+//                     Read Rom and read Ram
+
+static u32 PicoReadPico8(u32 a)
+{
+  u32 d=0;
+
+  if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram
+  if (a<Pico.romsize) { d = *(u8 *)(Pico.rom+(a^1)); goto end; } // Rom
+
+  a&=0xffffff;
+
+  if ((a&0xffffe0)==0xc00000) { // VDP
+    d=PicoVideoRead(a);
+    if ((a&1)==0) d>>=8;
+    goto end;
+  }
+
+  elprintf(EL_UIO, "r8 : %06x,   %02x @%06x", a&0xffffff, (u8)d, SekPc);
+
+end:
+  elprintf(EL_IO, "r8 : %06x,   %02x @%06x", a&0xffffff, (u8)d, SekPc);
+  return d;
+}
+
+static u32 PicoReadPico16(u32 a)
+{
+  u32 d=0;
+
+  if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram
+
+  a&=0xfffffe;
+
+  if (a<Pico.romsize) { d = *(u16 *)(Pico.rom+a); goto end; } // Rom
+
+  if ((a&0xffffe0)==0xc00000) {
+    d = PicoVideoRead(a);
+    goto end;
+  }
+
+  elprintf(EL_UIO, "r16: %06x, %04x  @%06x", a&0xffffff, d, SekPc);
+
+end:
+  elprintf(EL_IO, "r16: %06x, %04x  @%06x", a&0xffffff, d, SekPc);
+  return d;
+}
+
+static u32 PicoReadPico32(u32 a)
+{
+  u32 d=0;
+
+  if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram
+
+  a&=0xfffffe;
+
+  if (a<Pico.romsize) { u16 *pm=(u16 *)(Pico.rom+a); d = (pm[0]<<16)|pm[1]; goto end; } // Rom
+
+  if ((a&0xffffe0)==0xc00000) {
+    d = (PicoVideoRead(a)<<16)|PicoVideoRead(a+2);
+    goto end;
+  }
+
+  elprintf(EL_UIO, "r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);
+
+end:
+  elprintf(EL_IO, "r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);
+  return d;
+}
+
+// -----------------------------------------------------------------
+//                            Write Ram
+
+static void PicoWritePico8(u32 a,u8 d)
+{
+  elprintf(EL_IO, "w8 : %06x,   %02x @%06x", a&0xffffff, d, SekPc);
+
+  if ((a&0xe00000)==0xe00000) { *(u8 *)(Pico.ram+((a^1)&0xffff))=d; return; } // Ram
+
+  a&=0xffffff;
+  if ((a&0xffffe0)==0xc00000) { // VDP
+    d&=0xff;
+    PicoVideoWrite(a,(u16)(d|(d<<8))); // Byte access gets mirrored
+    return;
+  }
+
+  elprintf(EL_UIO, "w8 : %06x,   %02x @%06x", a&0xffffff, d, SekPc);
+}
+
+static void PicoWritePico16(u32 a,u16 d)
+{
+  elprintf(EL_IO, "w16: %06x, %04x", a&0xffffff, d);
+
+  if ((a&0xe00000)==0xe00000) { *(u16 *)(Pico.ram+(a&0xfffe))=d; return; } // Ram
+
+  a&=0xfffffe;
+  if ((a&0xffffe0)==0xc00000) { PicoVideoWrite(a,(u16)d); return; } // VDP
+
+  elprintf(EL_UIO, "w16: %06x, %04x", a&0xffffff, d);
+}
+
+static void PicoWritePico32(u32 a,u32 d)
+{
+  elprintf(EL_IO, "w32: %06x, %08x", a&0xffffff, d);
+
+  if ((a&0xe00000)==0xe00000)
+  {
+    // Ram:
+    u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));
+    pm[0]=(u16)(d>>16); pm[1]=(u16)d;
+    return;
+  }
+
+  a&=0xfffffe;
+  if ((a&0xffffe0)==0xc00000)
+  {
+    // VDP:
+    PicoVideoWrite(a,  (u16)(d>>16));
+    PicoVideoWrite(a+2,(u16)d);
+    return;
+  }
+
+  elprintf(EL_UIO, "w32: %06x, %08x", a&0xffffff, d);
+}
+
+#ifdef EMU_M68K
+extern unsigned int (*pm68k_read_memory_8) (unsigned int address);
+extern unsigned int (*pm68k_read_memory_16)(unsigned int address);
+extern unsigned int (*pm68k_read_memory_32)(unsigned int address);
+extern void (*pm68k_write_memory_8) (unsigned int address, unsigned char  value);
+extern void (*pm68k_write_memory_16)(unsigned int address, unsigned short value);
+extern void (*pm68k_write_memory_32)(unsigned int address, unsigned int   value);
+extern unsigned int (*pm68k_read_memory_pcr_8) (unsigned int address);
+extern unsigned int (*pm68k_read_memory_pcr_16)(unsigned int address);
+extern unsigned int (*pm68k_read_memory_pcr_32)(unsigned int address);
+
+static unsigned int m68k_read_memory_pcrp_8(unsigned int a)
+{
+  if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram
+  return 0;
+}
+
+static unsigned int m68k_read_memory_pcrp_16(unsigned int a)
+{
+  if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram
+  return 0;
+}
+
+static unsigned int m68k_read_memory_pcrp_32(unsigned int a)
+{
+  if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram
+  return 0;
+}
+#endif // EMU_M68K
+
+
+PICO_INTERNAL void PicoMemSetupPico(void)
+{
+#ifdef EMU_M68K
+  pm68k_read_memory_8  = PicoReadPico8;
+  pm68k_read_memory_16 = PicoReadPico16;
+  pm68k_read_memory_32 = PicoReadPico32;
+  pm68k_write_memory_8  = PicoWritePico8;
+  pm68k_write_memory_16 = PicoWritePico16;
+  pm68k_write_memory_32 = PicoWritePico32;
+  pm68k_read_memory_pcr_8  = m68k_read_memory_pcrp_8;
+  pm68k_read_memory_pcr_16 = m68k_read_memory_pcrp_16;
+  pm68k_read_memory_pcr_32 = m68k_read_memory_pcrp_32;
+#endif
+}
+

Pico/Pico/Pico.c

@@ -0,0 +1,10 @@
+#include "../PicoInt.h"
+
+PICO_INTERNAL int PicoInitPico(void)
+{
+  elprintf(EL_STATUS, "Pico detected");
+  PicoAHW = PAHW_PICO;
+
+  return 0;
+}
+