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https://github.com/RaySollium99/picodrive.git
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Sonic CD shows it's title screen
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@19 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
cb4a513a96
commit
ab0607f7e4
4 changed files with 172 additions and 44 deletions
128
Pico/cd/Memory.c
128
Pico/cd/Memory.c
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@ -24,8 +24,8 @@ typedef unsigned int u32;
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//#define __debug_io
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//#define __debug_io2
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//#define rdprintf dprintf
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#define rdprintf(...)
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#define rdprintf dprintf
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//#define rdprintf(...)
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// -----------------------------------------------------------------
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@ -500,6 +500,7 @@ u8 PicoReadM68k8(u32 a)
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return (u8)d;
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}
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u16 PicoReadM68k16(u32 a)
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{
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u16 d=0;
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@ -552,6 +553,7 @@ u16 PicoReadM68k16(u32 a)
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return d;
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}
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u32 PicoReadM68k32(u32 a)
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{
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u32 d=0;
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@ -577,11 +579,10 @@ u32 PicoReadM68k32(u32 a)
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if (a >= 0x220000) {
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dprintf("cell");
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} else {
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u16 *pm;
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a=((a&0x1fffe)<<1);
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if (Pico_mcd->s68k_regs[3]&1) a+=2;
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pm=(u16 *)(Pico_mcd->word_ram+a);
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d = (pm[0]<<16)|pm[1];
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d = *(u16 *)(Pico_mcd->word_ram+a) << 16;
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d |= *(u16 *)(Pico_mcd->word_ram+a+4);
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}
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} else {
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// allow access in any mode, like Gens does
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@ -606,6 +607,7 @@ u32 PicoReadM68k32(u32 a)
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return d;
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}
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// -----------------------------------------------------------------
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// Write Ram
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@ -618,7 +620,10 @@ void PicoWriteM68k8(u32 a,u8 d)
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// dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);
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if ((a&0xe00000)==0xe00000) { u8 *pm=(u8 *)(Pico.ram+((a^1)&0xffff)); pm[0]=d; return; } // Ram
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if ((a&0xe00000)==0xe00000) { // Ram
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*(u8 *)(Pico.ram+((a^1)&0xffff)) = d;
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return;
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}
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a&=0xffffff;
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@ -653,6 +658,7 @@ void PicoWriteM68k8(u32 a,u8 d)
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OtherWrite8(a,d,8);
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}
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void PicoWriteM68k16(u32 a,u16 d)
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{
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#ifdef __debug_io
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@ -660,7 +666,10 @@ void PicoWriteM68k16(u32 a,u16 d)
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#endif
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// dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);
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if ((a&0xe00000)==0xe00000) { *(u16 *)(Pico.ram+(a&0xfffe))=d; return; } // Ram
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if ((a&0xe00000)==0xe00000) { // Ram
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*(u16 *)(Pico.ram+(a&0xfffe))=d;
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return;
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}
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a&=0xfffffe;
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@ -695,6 +704,7 @@ void PicoWriteM68k16(u32 a,u16 d)
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OtherWrite16(a,d);
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}
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void PicoWriteM68k32(u32 a,u32 d)
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{
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#ifdef __debug_io
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@ -727,11 +737,10 @@ void PicoWriteM68k32(u32 a,u32 d)
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if (a >= 0x220000) {
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dprintf("cell");
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} else {
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u16 *pm;
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a=((a&0x1fffe)<<1);
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if (Pico_mcd->s68k_regs[3]&1) a+=2;
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pm=(u16 *)(Pico_mcd->word_ram+a);
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pm[0]=(u16)(d>>16); pm[1]=(u16)d;
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*(u16 *)(Pico_mcd->word_ram+a) = d>>16;
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*(u16 *)(Pico_mcd->word_ram+a+4) = d;
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}
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} else {
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// allow access in any mode, like Gens does
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@ -744,6 +753,22 @@ void PicoWriteM68k32(u32 a,u32 d)
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if ((a&0xffffc0)==0xa12000)
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rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);
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#if 0
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if ((a&0x3f) == 0x1c && SekPc == 0xffff05ba)
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{
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int i;
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FILE *ff;
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unsigned short *ram = (unsigned short *) Pico.ram;
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// unswap and dump RAM
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for (i = 0; i < 0x10000/2; i++)
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ram[i] = (ram[i]>>8) | (ram[i]<<8);
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ff = fopen("ram.bin", "wb");
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fwrite(ram, 1, 0x10000, ff);
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fclose(ff);
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exit(0);
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}
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#endif
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OtherWrite16(a, (u16)(d>>16));
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OtherWrite16(a+2,(u16)d);
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}
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@ -800,6 +825,12 @@ u8 PicoReadS68k8(u32 a)
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goto end;
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}
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// bram
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if ((a&0xff0000)==0xfe0000) {
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d = Pico_mcd->bram[(a>>1)&0x1fff];
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goto end;
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}
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dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);
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end:
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@ -810,6 +841,7 @@ u8 PicoReadS68k8(u32 a)
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return (u8)d;
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}
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u16 PicoReadS68k16(u32 a)
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{
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u16 d=0;
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@ -843,7 +875,7 @@ u16 PicoReadS68k16(u32 a)
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// allow access in any mode, like Gens does
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d = *(u16 *)(Pico_mcd->word_ram+(a&0x3fffe));
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}
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dprintf("ret = %04x", (u8)d);
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dprintf("ret = %04x", d);
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goto end;
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}
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@ -853,7 +885,17 @@ u16 PicoReadS68k16(u32 a)
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a=((a&0x1fffe)<<1);
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if (!(Pico_mcd->s68k_regs[3]&1)) a+=2;
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d = *(u16 *)(Pico_mcd->word_ram+a);
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dprintf("ret = %04x", (u8)d);
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dprintf("ret = %04x", d);
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goto end;
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}
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// bram
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if ((a&0xff0000)==0xfe0000) {
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dprintf("s68k_bram r16: [%06x] @%06x", a, SekPc);
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a = (a>>1)&0x1fff;
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d = Pico_mcd->bram[a++]; // Gens does little endian here, an so do we..
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d|= Pico_mcd->bram[a++] << 8;
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dprintf("ret = %04x", d);
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goto end;
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}
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@ -867,6 +909,7 @@ u16 PicoReadS68k16(u32 a)
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return d;
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}
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u32 PicoReadS68k32(u32 a)
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{
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u32 d=0;
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@ -901,19 +944,30 @@ u32 PicoReadS68k32(u32 a)
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// allow access in any mode, like Gens does
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u16 *pm=(u16 *)(Pico_mcd->word_ram+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];
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}
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dprintf("ret = %08x", (u8)d);
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dprintf("ret = %08x", d);
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goto end;
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}
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// word RAM (1M area)
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if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff
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u16 *pm;
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dprintf("s68k_wram1M 32: [%06x] @%06x", a, SekPc);
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dprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPc);
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a=((a&0x1fffe)<<1);
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if (!(Pico_mcd->s68k_regs[3]&1)) a+=2;
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pm=(u16 *)(Pico_mcd->word_ram+a);
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d = (pm[0]<<16)|pm[1];
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dprintf("ret = %08x", (u8)d);
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d = *(u16 *)(Pico_mcd->word_ram+a) << 16;
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d |= *(u16 *)(Pico_mcd->word_ram+a+4);
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dprintf("ret = %08x", d);
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goto end;
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}
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// bram
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if ((a&0xff0000)==0xfe0000) {
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dprintf("s68k_bram r32: [%06x] @%06x", a, SekPc);
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a = (a>>1)&0x1fff;
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d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..
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d|= Pico_mcd->bram[a++] << 24;
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d|= Pico_mcd->bram[a++];
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d|= Pico_mcd->bram[a++] << 8;
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dprintf("ret = %08x", d);
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goto end;
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}
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@ -927,6 +981,7 @@ u32 PicoReadS68k32(u32 a)
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return d;
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}
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// -----------------------------------------------------------------
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void PicoWriteS68k8(u32 a,u8 d)
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@ -980,9 +1035,17 @@ void PicoWriteS68k8(u32 a,u8 d)
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return;
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}
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// bram
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if ((a&0xff0000)==0xfe0000) {
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Pico_mcd->bram[(a>>1)&0x1fff] = d;
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SRam.changed = 1;
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return;
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}
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dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);
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}
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void PicoWriteS68k16(u32 a,u16 d)
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{
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#ifdef __debug_io2
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@ -1033,9 +1096,20 @@ void PicoWriteS68k16(u32 a,u16 d)
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return;
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}
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// bram
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if ((a&0xff0000)==0xfe0000) {
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dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPc);
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a = (a>>1)&0x1fff;
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Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..
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Pico_mcd->bram[a++] = d >> 8;
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SRam.changed = 1;
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return;
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}
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dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);
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}
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void PicoWriteS68k32(u32 a,u32 d)
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{
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#ifdef __debug_io2
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@ -1083,15 +1157,27 @@ void PicoWriteS68k32(u32 a,u32 d)
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// word RAM (1M area)
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if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff
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u16 *pm;
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if (d)
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dprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPc);
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a=((a&0x1fffe)<<1);
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if (!(Pico_mcd->s68k_regs[3]&1)) a+=2;
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pm=(u16 *)(Pico_mcd->word_ram+a);
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pm[0]=(u16)(d>>16); pm[1]=(u16)d;
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*(u16 *)(Pico_mcd->word_ram+a) = d>>16;
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*(u16 *)(Pico_mcd->word_ram+a+4) = d;
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return;
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}
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// bram
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if ((a&0xff0000)==0xfe0000) {
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dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPc);
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a = (a>>1)&0x1fff;
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Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?
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Pico_mcd->bram[a++] = d >> 24;
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Pico_mcd->bram[a++] = d;
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Pico_mcd->bram[a++] = d >> 8;
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SRam.changed = 1;
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return;
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}
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dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);
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}
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