X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2Fcd%2FMemory.c;h=8053185f1c2cd0569d7df6108023b9078bb14fd1;hb=8022f53da61b8e70420a3bac97250119bbe26457;hp=890af0a22b737ad7239ce7b498d6a0c8c53e2bca;hpb=fa1e5e2948e9b06dec3353081081173f7ae4d742;p=picodrive.git diff --git a/Pico/cd/Memory.c b/Pico/cd/Memory.c index 890af0a..8053185 100644 --- a/Pico/cd/Memory.c +++ b/Pico/cd/Memory.c @@ -1,38 +1,50 @@ -// This is part of Pico Library +// Memory I/O handlers for Sega/Mega CD. +// Loosely based on Gens code. +// (c) Copyright 2007, Grazvydas "notaz" Ignotas -// (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. - -// A68K no longer supported here //#define __debug_io #include "../PicoInt.h" -#include "../sound/sound.h" #include "../sound/ym2612.h" #include "../sound/sn76496.h" #include "gfx_cd.h" #include "pcm.h" -#include "cell_map.c" - +#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 wrdprintf dprintf +#define wrdprintf(...) +#define plprintf dprintf +//#define plprintf(...) + +#ifdef EMU_CORE_DEBUG +extern u32 lastread_a, lastread_d[16], lastwrite_cyc_d[16]; +extern int lrp_cyc, lwp_cyc; +#undef USE_POLL_DETECT +#endif // ----------------------------------------------------------------- +// poller detection +#define POLL_LIMIT 16 +#define POLL_CYCLES 124 +// int m68k_poll_addr, m68k_poll_cnt; +unsigned int s68k_poll_adclk, s68k_poll_cnt; +#ifndef _ASM_CD_MEMORY_C static u32 m68k_reg_read16(u32 a) { u32 d=0; @@ -45,13 +57,15 @@ static u32 m68k_reg_read16(u32 a) goto end; case 2: d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7); - dprintf("m68k_regs r3: %02x @%06x", (u8)d, SekPcS68k); + // the DMNA delay must only be visible on s68k side (Lunar2, Silpheed) + if (Pico_mcd->m.state_flags&2) { d &= ~1; d |= 2; } + //printf("m68k_regs r3: %02x @%06x\n", (u8)d, SekPc); goto end; case 4: d = Pico_mcd->s68k_regs[4]<<8; goto end; case 6: - d = Pico_mcd->m.hint_vector; + d = *(u16 *)(Pico_mcd->bios + 0x72); goto end; case 8: d = Read_CDC_Host(0); @@ -60,8 +74,8 @@ static u32 m68k_reg_read16(u32 a) dprintf("m68k FIXME: reserved read"); goto end; case 0xC: - dprintf("m68k stopwatch timer read"); d = Pico_mcd->m.timer_stopwatch >> 16; + dprintf("m68k stopwatch timer read (%04x)", d); goto end; } @@ -78,8 +92,12 @@ end: // dprintf("ret = %04x", d); return d; } +#endif -static void m68k_reg_write8(u32 a, u32 d) +#ifndef _ASM_CD_MEMORY_C +static +#endif +void m68k_reg_write8(u32 a, u32 d) { a &= 0x3f; // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc); @@ -96,52 +114,122 @@ static void m68k_reg_write8(u32 a, u32 d) if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1); if ((Pico_mcd->m.state_flags&1) && (d&3)==1) { SekResetS68k(); // S68k comes out of RESET or BRQ state - Pico_mcd->m.state_flags&=~1; - dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft); + Pico_mcd->m.state_flags&=~1; + dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft); } 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: - dprintf("m68k_regs w3: %02x @%06x", (u8)d, SekPc); + case 3: { + u32 dold = Pico_mcd->s68k_regs[3]&0x1f; + //printf("m68k_regs w3: %02x @%06x\n", (u8)d, SekPc); d &= 0xc2; - if ((Pico_mcd->s68k_regs[3]>>6) != ((d>>6)&3)) + if ((dold>>6) != ((d>>6)&3)) dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3)); //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2); //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") : // ((d&2) ? "word ram to s68k" : "word ram to m68k")); - d |= Pico_mcd->s68k_regs[3]&0x1d; - if (!(d & 4) && (d & 2)) d &= ~1; // return word RAM to s68k in 2M mode - Pico_mcd->s68k_regs[3] = d; // really use s68k side register + if (dold & 4) { + d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing + } else { + //dold &= ~2; // ?? +#if 1 + if ((d & 2) && !(dold & 2)) { + Pico_mcd->m.state_flags |= 2; // we must delay setting DMNA bit (needed for Silpheed) + d &= ~2; + } +#else + if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode +#endif + } + Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register +#ifdef USE_POLL_DETECT + if ((s68k_poll_adclk&0xfe) == 2 && s68k_poll_cnt > POLL_LIMIT) { + SekSetStopS68k(0); s68k_poll_adclk = 0; + plprintf("s68k poll release, a=%02x\n", a); + } +#endif return; + } case 6: - dprintf("FIXME hint[2]: %02x @%06x", (u8)d, SekPc); Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer return; case 7: - dprintf("FIXME hint[3]: %02x @%06x", (u8)d, SekPc); Pico_mcd->bios[0x72] = d; - dprintf("vector is now %08x", PicoRead32(0x70)); + dprintf("hint vector set to %08x", PicoRead32(0x70)); return; + case 0xf: + d = (d << 1) | ((d >> 7) & 1); // rol8 1 (special case) case 0xe: //dprintf("m68k: comm flag: %02x", d); Pico_mcd->s68k_regs[0xe] = d; +#ifdef USE_POLL_DETECT + if ((s68k_poll_adclk&0xfe) == 0xe && s68k_poll_cnt > POLL_LIMIT) { + SekSetStopS68k(0); s68k_poll_adclk = 0; + plprintf("s68k poll release, a=%02x\n", a); + } +#endif return; } if ((a&0xf0) == 0x10) { Pico_mcd->s68k_regs[a] = d; +#ifdef USE_POLL_DETECT + if ((a&0xfe) == (s68k_poll_adclk&0xfe) && s68k_poll_cnt > POLL_LIMIT) { + SekSetStopS68k(0); s68k_poll_adclk = 0; + plprintf("s68k poll release, a=%02x\n", a); + } +#endif return; } dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d); } +#ifndef _ASM_CD_MEMORY_C +static +#endif +u32 s68k_poll_detect(u32 a, u32 d) +{ +#ifdef USE_POLL_DETECT + // polling detection + if (a == (s68k_poll_adclk&0xff)) { + unsigned int clkdiff = SekCyclesDoneS68k() - (s68k_poll_adclk>>8); + if (clkdiff <= POLL_CYCLES) { + s68k_poll_cnt++; + //printf("-- diff: %u, cnt = %i\n", clkdiff, s68k_poll_cnt); + if (s68k_poll_cnt > POLL_LIMIT) { + SekSetStopS68k(1); + plprintf("s68k poll detected @ %06x, a=%02x\n", SekPcS68k, a); + } + s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a; + return d; + } + } + s68k_poll_adclk = (SekCyclesDoneS68k() << 8) | a; + s68k_poll_cnt = 0; +#endif + return d; +} + +#define READ_FONT_DATA(basemask) \ +{ \ + unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \ + unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \ + if (fnt & (basemask << 0)) d = col1 ; else d = col0; \ + if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \ + if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \ + if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \ +} -static u32 s68k_reg_read16(u32 a) +#ifndef _ASM_CD_MEMORY_C +static +#endif +u32 s68k_reg_read16(u32 a) { u32 d=0; @@ -149,65 +237,88 @@ static u32 s68k_reg_read16(u32 a) switch (a) { case 0: - d = ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state - goto end; + return ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state case 2: - d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0x1f); - dprintf("s68k_regs r3: %02x @%06x", (u8)d, SekPc); - goto end; + d = (Pico_mcd->s68k_regs[2]<<8) | (Pico_mcd->s68k_regs[3]&0x1f); + //printf("s68k_regs r3: %02x @%06x\n", (u8)d, SekPcS68k); + return s68k_poll_detect(a, d); case 6: - d = CDC_Read_Reg(); - goto end; + return CDC_Read_Reg(); case 8: - d = Read_CDC_Host(1); // Gens returns 0 here on byte reads - goto end; + return Read_CDC_Host(1); // Gens returns 0 here on byte reads case 0xC: - dprintf("s68k stopwatch timer read"); d = Pico_mcd->m.timer_stopwatch >> 16; - goto end; + dprintf("s68k stopwatch timer read (%04x)", d); + return d; case 0x30: - dprintf("s68k int3 timer read"); - break; + dprintf("s68k int3 timer read (%02x)", Pico_mcd->s68k_regs[31]); + return Pico_mcd->s68k_regs[31]; case 0x34: // fader - d = 0; // no busy bit - goto end; + return 0; // no busy bit + case 0x50: // font data (check: Lunar 2, Silpheed) + READ_FONT_DATA(0x00100000); + return d; + case 0x52: + READ_FONT_DATA(0x00010000); + return d; + case 0x54: + READ_FONT_DATA(0x10000000); + return d; + case 0x56: + READ_FONT_DATA(0x01000000); + return d; } d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1]; -end: - - // dprintf("ret = %04x", d); + if (a >= 0x0e && a < 0x30) + return s68k_poll_detect(a, d); return d; } -static void s68k_reg_write8(u32 a, u32 d) +#ifndef _ASM_CD_MEMORY_C +static +#endif +void s68k_reg_write8(u32 a, u32 d) { //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k); - // TODO: review against Gens + // Warning: d might have upper bits set switch (a) { case 2: return; // only m68k can change WP case 3: { int dold = Pico_mcd->s68k_regs[3]; - dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPc); + //printf("s68k_regs w3: %02x @%06x\n", (u8)d, SekPcS68k); d &= 0x1d; + d |= dold&0xc2; if (d&4) { - d |= dold&0xc2; - if ((d ^ dold) & 5) d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit + if ((d ^ dold) & 5) { + d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit + PicoMemResetCD(d); + } +#ifdef _ASM_CD_MEMORY_C + if ((d ^ dold) & 0x1d) + PicoMemResetCDdecode(d); +#endif if (!(dold & 4)) { dprintf("wram mode 2M->1M"); wram_2M_to_1M(Pico_mcd->word_ram2M); - } + } } else { - d |= Pico_mcd->s68k_regs[3]&0xc3; - if (d&1) d &= ~2; // return word RAM to m68k in 2M mode if (dold & 4) { dprintf("wram mode 1M->2M"); + if (!(d&1)) { // it didn't set the ret bit, which means it doesn't want to give WRAM to m68k + d &= ~3; + 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); - } + PicoMemResetCD(d); + } + else + d |= dold&1; + if (d&1) d &= ~2; // return word RAM to m68k in 2M mode } break; } @@ -230,12 +341,11 @@ static void s68k_reg_write8(u32 a, u32 d) Pico_mcd->m.timer_stopwatch = 0; return; case 0xe: - Pico_mcd->s68k_regs[0Xf] = (d>>1) | (d<<7); // ror8, Gens note: Dragons lair - Pico_mcd->m.timer_stopwatch = 0; + Pico_mcd->s68k_regs[0xf] = (d>>1) | (d<<7); // ror8 1, Gens note: Dragons lair return; case 0x31: dprintf("s68k set int3 timer: %02x", d); - Pico_mcd->m.timer_int3 = d << 16; + Pico_mcd->m.timer_int3 = (d & 0xff) << 16; break; case 0x33: // IRQ mask dprintf("s68k irq mask: %02x", d); @@ -272,7 +382,7 @@ static void s68k_reg_write8(u32 a, u32 d) } - +#ifndef _ASM_CD_MEMORY_C static u32 OtherRead16End(u32 a, int realsize) { u32 d=0; @@ -282,6 +392,24 @@ static u32 OtherRead16End(u32 a, int realsize) goto end; } + if (a==0x400000) { + if (SRam.data != NULL) d=3; // 64k cart + goto end; + } + + if ((a&0xfe0000)==0x600000) { + if (SRam.data != NULL) { + d=SRam.data[((a>>1)&0xffff)+0x2000]; + if (realsize == 8) d|=d<<8; + } + goto end; + } + + if (a==0x7ffffe) { + d=Pico_mcd->m.bcram_reg; + goto end; + } + dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc); end: @@ -293,18 +421,36 @@ 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); -} + if ((a&0xfe0000)==0x600000) { + if (SRam.data != NULL && (Pico_mcd->m.bcram_reg&1)) { + SRam.data[((a>>1)&0xffff)+0x2000]=d; + SRam.changed = 1; + } + return; + } + + if (a==0x7fffff) { + Pico_mcd->m.bcram_reg=d; + return; + } + 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" +#endif // !def _ASM_CD_MEMORY_C // ----------------------------------------------------------------- // Read Rom and read Ram -u8 PicoReadM68k8(u32 a) +#ifdef _ASM_CD_MEMORY_C +u32 PicoReadM68k8(u32 a); +#else +static u32 PicoReadM68k8(u32 a) { u32 d=0; @@ -315,31 +461,15 @@ u8 PicoReadM68k8(u32 a) if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios // prg RAM - if ((a&0xfe0000)==0x020000) { + 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; } -#if 0 - if (a == 0x200000 && SekPc == 0xff0b66 && Pico.m.frame_count > 1000) - { - int i; - FILE *ff; - unsigned short *ram = (unsigned short *) Pico.ram; - // unswap and dump RAM - for (i = 0; i < 0x10000/2; i++) - ram[i] = (ram[i]>>8) | (ram[i]<<8); - ff = fopen("ram.bin", "wb"); - fwrite(ram, 1, 0x10000, ff); - fclose(ff); - exit(0); - } -#endif - // word RAM if ((a&0xfc0000)==0x200000) { - dprintf("m68k_wram r8: [%06x] @%06x", a, SekPc); + wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc); if (Pico_mcd->s68k_regs[3]&4) { // 1M mode? int bank = Pico_mcd->s68k_regs[3]&1; if (a >= 0x220000) @@ -350,7 +480,7 @@ u8 PicoReadM68k8(u32 a) // allow access in any mode, like Gens does d = Pico_mcd->word_ram2M[(a^1)&0x3ffff]; } - dprintf("ret = %02x", (u8)d); + wrdprintf("ret = %02x", (u8)d); goto end; } @@ -369,13 +499,23 @@ u8 PicoReadM68k8(u32 a) #ifdef __debug_io dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc); #endif - return (u8)d; +#ifdef EMU_CORE_DEBUG + if (a>=Pico.romsize) { + lastread_a = a; + lastread_d[lrp_cyc++&15] = d; + } +#endif + return d; } +#endif -u16 PicoReadM68k16(u32 a) +#ifdef _ASM_CD_MEMORY_C +u32 PicoReadM68k16(u32 a); +#else +static u32 PicoReadM68k16(u32 a) { - u16 d=0; + u32 d=0; if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram @@ -384,15 +524,17 @@ u16 PicoReadM68k16(u32 a) if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios // prg RAM - if ((a&0xfe0000)==0x020000) { + 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)); + wrdprintf("ret = %04x", d); goto end; } // word RAM if ((a&0xfc0000)==0x200000) { - dprintf("m68k_wram r16: [%06x] @%06x", a, SekPc); + wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc); if (Pico_mcd->s68k_regs[3]&4) { // 1M mode? int bank = Pico_mcd->s68k_regs[3]&1; if (a >= 0x220000) @@ -403,14 +545,14 @@ u16 PicoReadM68k16(u32 a) // allow access in any mode, like Gens does d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); } - dprintf("ret = %04x", d); + wrdprintf("ret = %04x", d); goto end; } 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); @@ -419,12 +561,22 @@ u16 PicoReadM68k16(u32 a) #ifdef __debug_io dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc); +#endif +#ifdef EMU_CORE_DEBUG + if (a>=Pico.romsize) { + lastread_a = a; + lastread_d[lrp_cyc++&15] = d; + } #endif return d; } +#endif -u32 PicoReadM68k32(u32 a) +#ifdef _ASM_CD_MEMORY_C +u32 PicoReadM68k32(u32 a); +#else +static u32 PicoReadM68k32(u32 a) { u32 d=0; @@ -435,7 +587,7 @@ 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) { + 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]; @@ -444,16 +596,16 @@ u32 PicoReadM68k32(u32 a) // word RAM if ((a&0xfc0000)==0x200000) { - dprintf("m68k_wram r32: [%06x] @%06x", a, SekPc); + wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc); if (Pico_mcd->s68k_regs[3]&4) { // 1M mode? int bank = Pico_mcd->s68k_regs[3]&1; if (a >= 0x220000) { // cell arranged u32 a1, a2; a1 = (a&2) | (cell_map(a >> 2) << 2); - if (a&2) a2 = cell_map((a+2) >> 2) << 2; - else a2 = a1 + 2; - d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16; - d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2); + if (a&2) a2 = cell_map((a+2) >> 2) << 2; + else a2 = a1 + 2; + d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16; + d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2); } else { u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1]; } @@ -461,7 +613,7 @@ u32 PicoReadM68k32(u32 a) // allow access in any mode, like Gens does u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1]; } - dprintf("ret = %08x", d); + wrdprintf("ret = %08x", d); goto end; } @@ -476,22 +628,31 @@ u32 PicoReadM68k32(u32 a) end: #ifdef __debug_io dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc); +#endif +#ifdef EMU_CORE_DEBUG + if (a>=Pico.romsize) { + lastread_a = a; + lastread_d[lrp_cyc++&15] = d; + } #endif return d; } +#endif // ----------------------------------------------------------------- -// Write Ram -void PicoWriteM68k8(u32 a,u8 d) +#ifdef _ASM_CD_MEMORY_C +void PicoWriteM68k8(u32 a,u8 d); +#else +static void PicoWriteM68k8(u32 a,u8 d) { #ifdef __debug_io dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc); #endif - //if ((a&0xe0ffff)==0xe0a9ba+0x69c) - // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc); - +#ifdef EMU_CORE_DEBUG + lastwrite_cyc_d[lwp_cyc++&15] = d; +#endif if ((a&0xe00000)==0xe00000) { // Ram *(u8 *)(Pico.ram+((a^1)&0xffff)) = d; @@ -501,7 +662,7 @@ void PicoWriteM68k8(u32 a,u8 d) a&=0xffffff; // prg RAM - if ((a&0xfe0000)==0x020000) { + 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; @@ -509,7 +670,7 @@ void PicoWriteM68k8(u32 a,u8 d) // word RAM if ((a&0xfc0000)==0x200000) { - dprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc); + wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc); if (Pico_mcd->s68k_regs[3]&4) { // 1M mode? int bank = Pico_mcd->s68k_regs[3]&1; if (a >= 0x220000) @@ -523,19 +684,28 @@ void PicoWriteM68k8(u32 a,u8 d) return; } - if ((a&0xffffc0)==0xa12000) + if ((a&0xffffc0)==0xa12000) { rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc); + m68k_reg_write8(a, d); + return; + } - OtherWrite8(a,d,8); + OtherWrite8(a,d); } +#endif -void PicoWriteM68k16(u32 a,u16 d) +#ifdef _ASM_CD_MEMORY_C +void PicoWriteM68k16(u32 a,u16 d); +#else +static void PicoWriteM68k16(u32 a,u16 d) { #ifdef __debug_io dprintf("w16: %06x, %04x", a&0xffffff, d); #endif - // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc); +#ifdef EMU_CORE_DEBUG + lastwrite_cyc_d[lwp_cyc++&15] = d; +#endif if ((a&0xe00000)==0xe00000) { // Ram *(u16 *)(Pico.ram+(a&0xfffe))=d; @@ -545,15 +715,16 @@ void PicoWriteM68k16(u32 a,u16 d) a&=0xfffffe; // prg RAM - if ((a&0xfe0000)==0x020000) { + 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; return; } // word RAM if ((a&0xfc0000)==0x200000) { - dprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc); + wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc); if (Pico_mcd->s68k_regs[3]&4) { // 1M mode? int bank = Pico_mcd->s68k_regs[3]&1; if (a >= 0x220000) @@ -567,18 +738,40 @@ void PicoWriteM68k16(u32 a,u16 d) return; } - if ((a&0xffffc0)==0xa12000) + // regs + if ((a&0xffffc0)==0xa12000) { rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc); + if (a == 0xe) { // special case, 2 byte writes would be handled differently + 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 = 0; + plprintf("s68k poll release, a=%02x\n", a); + } +#endif + return; + } + m68k_reg_write8(a, d>>8); + m68k_reg_write8(a+1,d&0xff); + return; + } OtherWrite16(a,d); } +#endif -void PicoWriteM68k32(u32 a,u32 d) +#ifdef _ASM_CD_MEMORY_C +void PicoWriteM68k32(u32 a,u32 d); +#else +static void PicoWriteM68k32(u32 a,u32 d) { #ifdef __debug_io dprintf("w32: %06x, %08x", a&0xffffff, d); #endif +#ifdef EMU_CORE_DEBUG + lastwrite_cyc_d[lwp_cyc++&15] = d; +#endif if ((a&0xe00000)==0xe00000) { @@ -591,7 +784,7 @@ void PicoWriteM68k32(u32 a,u32 d) a&=0xfffffe; // prg RAM - if ((a&0xfe0000)==0x020000) { + 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; @@ -601,16 +794,16 @@ void PicoWriteM68k32(u32 a,u32 d) // word RAM if ((a&0xfc0000)==0x200000) { if (d != 0) // don't log clears - dprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc); + wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc); if (Pico_mcd->s68k_regs[3]&4) { // 1M mode? int bank = Pico_mcd->s68k_regs[3]&1; if (a >= 0x220000) { // cell arranged u32 a1, a2; a1 = (a&2) | (cell_map(a >> 2) << 2); - if (a&2) a2 = cell_map((a+2) >> 2) << 2; - else a2 = a1 + 2; - *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16; - *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d; + if (a&2) a2 = cell_map((a+2) >> 2) << 2; + else a2 = a1 + 2; + *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16; + *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d; } else { u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); pm[0]=(u16)(d>>16); pm[1]=(u16)d; @@ -623,21 +816,31 @@ void PicoWriteM68k32(u32 a,u32 d) return; } - if ((a&0xffffc0)==0xa12000) + if ((a&0xffffc0)==0xa12000) { rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc); + if ((a&0x3e) == 0xe) dprintf("m68k FIXME: w32 [%02x]", a&0x3f); + } OtherWrite16(a, (u16)(d>>16)); OtherWrite16(a+2,(u16)d); } +#endif +// ----------------------------------------------------------------- +// S68k // ----------------------------------------------------------------- - -u8 PicoReadS68k8(u32 a) +#ifdef _ASM_CD_MEMORY_C +u32 PicoReadS68k8(u32 a); +#else +static u32 PicoReadS68k8(u32 a) { u32 d=0; +#ifdef EMU_CORE_DEBUG + u32 ab=a&0xfffffe; +#endif a&=0xffffff; // prg RAM @@ -650,7 +853,13 @@ u8 PicoReadS68k8(u32 a) if ((a&0xfffe00) == 0xff8000) { a &= 0x1ff; rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k); - if (a >= 0x50 && a < 0x68) + if (a >= 0x0e && a < 0x30) { + d = Pico_mcd->s68k_regs[a]; + s68k_poll_detect(a, d); + rdprintf("ret = %02x", (u8)d); + goto end; + } + else if (a >= 0x58 && a < 0x68) d = gfx_cd_read(a&~1); else d = s68k_reg_read16(a&~1); if ((a&1)==0) d>>=8; @@ -661,9 +870,9 @@ u8 PicoReadS68k8(u32 a) // word RAM (2M area) if ((a&0xfc0000)==0x080000) { // 080000-0bffff // test: batman returns - dprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k); + 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; @@ -672,19 +881,19 @@ u8 PicoReadS68k8(u32 a) // allow access in any mode, like Gens does d = Pico_mcd->word_ram2M[(a^1)&0x3ffff]; } - dprintf("ret = %02x", (u8)d); + wrdprintf("ret = %02x", (u8)d); goto end; } // word RAM (1M area) - if ((a&0xfe0000)==0x0c0000) { // 0c0000-0dffff + if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff int bank; - dprintf("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); + 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)^1; d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff]; - dprintf("ret = %02x", (u8)d); + wrdprintf("ret = %02x", (u8)d); goto end; } @@ -716,19 +925,32 @@ u8 PicoReadS68k8(u32 a) #ifdef __debug_io2 dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k); #endif - return (u8)d; +#ifdef EMU_CORE_DEBUG + lastread_a = ab; + lastread_d[lrp_cyc++&15] = d; +#endif + return d; } +#endif -u16 PicoReadS68k16(u32 a) +#ifdef _ASM_CD_MEMORY_C +u32 PicoReadS68k16(u32 a); +#else +static u32 PicoReadS68k16(u32 a) { u32 d=0; +#ifdef EMU_CORE_DEBUG + u32 ab=a&0xfffffe; +#endif a&=0xfffffe; // prg RAM if (a < 0x80000) { + wrdprintf("s68k_prgram r16: [%06x] @%06x", a, SekPcS68k); d = *(u16 *)(Pico_mcd->prg_ram+a); + wrdprintf("ret = %04x", d); goto end; } @@ -736,7 +958,7 @@ u16 PicoReadS68k16(u32 a) if ((a&0xfffe00) == 0xff8000) { a &= 0x1fe; rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k); - if (a >= 0x50 && a < 0x68) + if (a >= 0x58 && a < 0x68) d = gfx_cd_read(a); else d = s68k_reg_read16(a); rdprintf("ret = %04x", d); @@ -745,9 +967,9 @@ u16 PicoReadS68k16(u32 a) // word RAM (2M area) if ((a&0xfc0000)==0x080000) { // 080000-0bffff - dprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k); + 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"); @@ -755,35 +977,35 @@ u16 PicoReadS68k16(u32 a) // allow access in any mode, like Gens does d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); } - dprintf("ret = %04x", d); + wrdprintf("ret = %04x", d); goto end; } // word RAM (1M area) - if ((a&0xfe0000)==0x0c0000) { // 0c0000-0dffff + if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff int bank; - dprintf("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); + 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)^1; d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); - dprintf("ret = %04x", d); + wrdprintf("ret = %04x", d); goto end; } // bram if ((a&0xff0000)==0xfe0000) { - dprintf("s68k_bram r16: [%06x] @%06x", a, SekPcS68k); + dprintf("FIXME: s68k_bram r16: [%06x] @%06x", a, SekPcS68k); a = (a>>1)&0x1fff; d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we.. - d|= Pico_mcd->bram[a++] << 8; + d|= Pico_mcd->bram[a++] << 8; // This is most likely wrong dprintf("ret = %04x", d); goto end; } // PCM if ((a&0xff8000)==0xff0000) { - dprintf("s68k_pcm r16: [%06x] @%06x", a, SekPcS68k); + dprintf("FIXME: s68k_pcm r16: [%06x] @%06x", a, SekPcS68k); a &= 0x7fff; if (a >= 0x2000) d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff]; @@ -802,15 +1024,26 @@ u16 PicoReadS68k16(u32 a) #ifdef __debug_io2 dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k); +#endif +#ifdef EMU_CORE_DEBUG + lastread_a = ab; + lastread_d[lrp_cyc++&15] = d; #endif return d; } +#endif -u32 PicoReadS68k32(u32 a) +#ifdef _ASM_CD_MEMORY_C +u32 PicoReadS68k32(u32 a); +#else +static u32 PicoReadS68k32(u32 a) { u32 d=0; +#ifdef EMU_CORE_DEBUG + u32 ab=a&0xfffffe; +#endif a&=0xfffffe; // prg RAM @@ -824,7 +1057,7 @@ u32 PicoReadS68k32(u32 a) if ((a&0xfffe00) == 0xff8000) { a &= 0x1fe; rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k); - if (a >= 0x50 && a < 0x68) + if (a >= 0x58 && a < 0x68) d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2); else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2); rdprintf("ret = %08x", d); @@ -833,31 +1066,30 @@ u32 PicoReadS68k32(u32 a) // word RAM (2M area) if ((a&0xfc0000)==0x080000) { // 080000-0bffff - dprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k); + 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]; d |= d << 4; d &= 0x0f0f0f0f; - dprintf("FIXME: decode"); } else { // allow access in any mode, like Gens does u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1]; } - dprintf("ret = %08x", d); + wrdprintf("ret = %08x", d); goto end; } // word RAM (1M area) - if ((a&0xfe0000)==0x0c0000) { // 0c0000-0dffff + if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff int bank; - dprintf("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); + 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)^1; u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1]; - dprintf("ret = %08x", d); + wrdprintf("ret = %08x", d); goto end; } @@ -886,7 +1118,7 @@ u32 PicoReadS68k32(u32 a) // bram if ((a&0xff0000)==0xfe0000) { - dprintf("s68k_bram r32: [%06x] @%06x", a, SekPcS68k); + dprintf("FIXME: s68k_bram r32: [%06x] @%06x", a, SekPcS68k); a = (a>>1)&0x1fff; d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion.. d|= Pico_mcd->bram[a++] << 24; @@ -902,14 +1134,75 @@ u32 PicoReadS68k32(u32 a) #ifdef __debug_io2 dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k); +#endif +#ifdef EMU_CORE_DEBUG + if (ab > 0x78) { // not vectors and stuff + lastread_a = ab; + lastread_d[lrp_cyc++&15] = d; + } #endif return d; } +#endif + + +#ifndef _ASM_CD_MEMORY_C +/* 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)^1] + (((a>>1)^1)&0x1ffff); + u8 oldmask = (a&1) ? 0xf0 : 0x0f; + + r3 &= 0x18; + d &= 0x0f; + if (!(a&1)) d <<= 4; + + if (r3 == 8) { + if ((!(*pd & (~oldmask))) && d) goto do_it; + } else if (r3 > 8) { + if (d) goto do_it; + } else { + goto do_it; + } + + return; +do_it: + *pd = d | (*pd & oldmask); +} +static void decode_write16(u32 a, u16 d, int r3) +{ + u8 *pd = Pico_mcd->word_ram1M[(r3 & 1)^1] + (((a>>1)^1)&0x1ffff); + + //if ((a & 0x3ffff) < 0x28000) return; + + r3 &= 0x18; + d &= 0x0f0f; + d |= d >> 4; + + if (r3 == 8) { + u8 dold = *pd; + if (!(dold & 0xf0)) dold |= d & 0xf0; + if (!(dold & 0x0f)) dold |= d & 0x0f; + *pd = dold; + } else if (r3 > 8) { + u8 dold = *pd; + if (!(d & 0xf0)) d |= dold & 0xf0; + if (!(d & 0x0f)) d |= dold & 0x0f; + *pd = d; + } else { + *pd = d; + } +} +#endif + // ----------------------------------------------------------------- -void PicoWriteS68k8(u32 a,u8 d) +#ifdef _ASM_CD_MEMORY_C +void PicoWriteS68k8(u32 a,u8 d); +#else +static void PicoWriteS68k8(u32 a,u8 d) { #ifdef __debug_io2 dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k); @@ -917,10 +1210,14 @@ void PicoWriteS68k8(u32 a,u8 d) a&=0xffffff; +#ifdef EMU_CORE_DEBUG + lastwrite_cyc_d[lwp_cyc++&15] = d; +#endif + // 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; } @@ -928,21 +1225,18 @@ void PicoWriteS68k8(u32 a,u8 d) if ((a&0xfffe00) == 0xff8000) { a &= 0x1ff; rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k); - if (a >= 0x50 && a < 0x68) - gfx_cd_write(a&~1, (d<<8)|d); + if (a >= 0x58 && a < 0x68) + gfx_cd_write16(a&~1, (d<<8)|d); else s68k_reg_write8(a,d); return; } // word RAM (2M area) if ((a&0xfc0000)==0x080000) { // 080000-0bffff - dprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k); - if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode? - int bank = !(Pico_mcd->s68k_regs[3]&1); - if (a&1) d &= 0x0f; - else d >>= 4; - Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff]=d; - dprintf("FIXME: decode"); + int r3 = Pico_mcd->s68k_regs[3]; + wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k); + if (r3 & 4) { // 1M decode mode? + decode_write8(a, d, r3); } else { // allow access in any mode, like Gens does *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d; @@ -951,13 +1245,14 @@ void PicoWriteS68k8(u32 a,u8 d) } // word RAM (1M area) - if ((a&0xfe0000)==0x0c0000) { // 0c0000-0dffff + if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff + // Wing Commander tries to write here in wrong mode int bank; if (d) - dprintf("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); + 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)^1; *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d; return; } @@ -981,9 +1276,13 @@ void PicoWriteS68k8(u32 a,u8 d) dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k); } +#endif -void PicoWriteS68k16(u32 a,u16 d) +#ifdef _ASM_CD_MEMORY_C +void PicoWriteS68k16(u32 a,u16 d); +#else +static void PicoWriteS68k16(u32 a,u16 d) { #ifdef __debug_io2 dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k); @@ -991,9 +1290,15 @@ void PicoWriteS68k16(u32 a,u16 d) a&=0xfffffe; +#ifdef EMU_CORE_DEBUG + lastwrite_cyc_d[lwp_cyc++&15] = d; +#endif + // prg RAM if (a < 0x80000) { - *(u16 *)(Pico_mcd->prg_ram+a)=d; + wrdprintf("s68k_prgram w16: [%06x] %04x @%06x", a, d, SekPcS68k); + if (a >= (Pico_mcd->s68k_regs[2]<<8)) // needed for Dungeon Explorer + *(u16 *)(Pico_mcd->prg_ram+a)=d; return; } @@ -1001,12 +1306,12 @@ void PicoWriteS68k16(u32 a,u16 d) if ((a&0xfffe00) == 0xff8000) { a &= 0x1fe; rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k); - if (a >= 0x50 && a < 0x68) - gfx_cd_write(a, d); + if (a >= 0x58 && a < 0x68) + gfx_cd_write16(a, d); else { if (a == 0xe) { // special case, 2 byte writes would be handled differently Pico_mcd->s68k_regs[0xf] = d; - return; + return; } s68k_reg_write8(a, d>>8); s68k_reg_write8(a+1,d&0xff); @@ -1016,12 +1321,10 @@ void PicoWriteS68k16(u32 a,u16 d) // word RAM (2M area) if ((a&0xfc0000)==0x080000) { // 080000-0bffff - dprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k); - if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode? - int bank = !(Pico_mcd->s68k_regs[3]&1); - d &= ~0xf0; d |= d >> 8; - Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff] = d; - dprintf("FIXME: decode"); + int r3 = Pico_mcd->s68k_regs[3]; + wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k); + if (r3 & 4) { // 1M decode mode? + decode_write16(a, d, r3); } else { // allow access in any mode, like Gens does *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d; @@ -1030,13 +1333,13 @@ void PicoWriteS68k16(u32 a,u16 d) } // word RAM (1M area) - if ((a&0xfe0000)==0x0c0000) { // 0c0000-0dffff + if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff int bank; if (d) - dprintf("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); + 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)^1; *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d; return; } @@ -1063,9 +1366,13 @@ void PicoWriteS68k16(u32 a,u16 d) dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k); } +#endif -void PicoWriteS68k32(u32 a,u32 d) +#ifdef _ASM_CD_MEMORY_C +void PicoWriteS68k32(u32 a,u32 d); +#else +static void PicoWriteS68k32(u32 a,u32 d) { #ifdef __debug_io2 dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k); @@ -1073,10 +1380,16 @@ void PicoWriteS68k32(u32 a,u32 d) a&=0xfffffe; +#ifdef EMU_CORE_DEBUG + lastwrite_cyc_d[lwp_cyc++&15] = d; +#endif + // 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; } @@ -1084,10 +1397,11 @@ void PicoWriteS68k32(u32 a,u32 d) if ((a&0xfffe00) == 0xff8000) { a &= 0x1fe; rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k); - if (a >= 0x50 && a < 0x68) { - gfx_cd_write(a, d>>16); - gfx_cd_write(a+2, d&0xffff); + if (a >= 0x58 && a < 0x68) { + gfx_cd_write16(a, d>>16); + gfx_cd_write16(a+2, d&0xffff); } else { + if ((a&0x1fe) == 0xe) dprintf("s68k FIXME: w32 [%02x]", a&0x3f); s68k_reg_write8(a, d>>24); s68k_reg_write8(a+1,(d>>16)&0xff); s68k_reg_write8(a+2,(d>>8) &0xff); @@ -1098,14 +1412,11 @@ void PicoWriteS68k32(u32 a,u32 d) // word RAM (2M area) if ((a&0xfc0000)==0x080000) { // 080000-0bffff - dprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k); - if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode? - int bank = !(Pico_mcd->s68k_regs[3]&1); - a >>= 1; - d &= 0x0f0f0f0f; d |= d >> 4; - Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] = d >> 16; - Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff] = d; - dprintf("FIXME: decode"); + int r3 = Pico_mcd->s68k_regs[3]; + wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k); + if (r3 & 4) { // 1M decode mode? + decode_write16(a , d >> 16, r3); + decode_write16(a+2, d , r3); } else { // allow access in any mode, like Gens does u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); @@ -1115,14 +1426,14 @@ void PicoWriteS68k32(u32 a,u32 d) } // word RAM (1M area) - if ((a&0xfe0000)==0x0c0000) { // 0c0000-0dffff + if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff int bank; u16 *pm; if (d) - dprintf("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); + 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)^1; pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); pm[0]=(u16)(d>>16); pm[1]=(u16)d; return; @@ -1157,13 +1468,13 @@ void PicoWriteS68k32(u32 a,u32 d) dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k); } - +#endif // ----------------------------------------------------------------- -#if defined(EMU_C68K) +#ifdef EMU_C68K static __inline int PicoMemBaseM68k(u32 pc) { if ((pc&0xe00000)==0xe00000) @@ -1177,7 +1488,7 @@ 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; } } @@ -1191,12 +1502,12 @@ 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; } @@ -1209,7 +1520,7 @@ 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; } @@ -1222,69 +1533,136 @@ 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; } #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) { +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); @@ -1303,14 +1681,15 @@ unsigned int m68k_read_pcrelative_CD8 (unsigned int a) { } return 0;//(u8) lastread_d; } -unsigned int m68k_read_pcrelative_CD16(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); @@ -1329,15 +1708,16 @@ unsigned int m68k_read_pcrelative_CD16(unsigned int a) { } return 0; } -unsigned int m68k_read_pcrelative_CD32(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]; }