From acd35d4c08522db8cd6714c95c022be98f0889d7 Mon Sep 17 00:00:00 2001 From: notaz Date: Thu, 17 Sep 2009 20:34:33 +0000 Subject: [PATCH] 32x: sh2 wip, main SH2 BIOS passes git-svn-id: file:///home/notaz/opt/svn/PicoDrive@782 be3aeb3a-fb24-0410-a615-afba39da0efa --- pico/32x/32x.c | 9 ++ pico/32x/memory.c | 265 ++++++++++++++++++++++++++++++++++++---- pico/pico_cmn.c | 11 +- pico/pico_int.h | 28 +++-- platform/linux/Makefile | 4 +- 5 files changed, 283 insertions(+), 34 deletions(-) diff --git a/pico/32x/32x.c b/pico/32x/32x.c index 1128893..c964d88 100644 --- a/pico/32x/32x.c +++ b/pico/32x/32x.c @@ -10,6 +10,12 @@ void Pico32xStartup(void) PicoAHW |= PAHW_32X; PicoMemSetup32x(); + sh2_init(&msh2); + sh2_reset(&msh2); + + sh2_init(&ssh2); + sh2_reset(&ssh2); + if (!Pico.m.pal) Pico32x.vdp_regs[0] |= P32XV_nPAL; @@ -77,6 +83,9 @@ static __inline void SekRunM68k(int cyc) } #define PICO_32X +#define RUN_SH2S \ + sh2_execute(&msh2, 1000); + #include "../pico_cmn.c" void PicoFrame32x(void) diff --git a/pico/32x/memory.c b/pico/32x/memory.c index 1606226..b89c577 100644 --- a/pico/32x/memory.c +++ b/pico/32x/memory.c @@ -7,7 +7,12 @@ struct Pico32xMem *Pico32xMem; static void bank_switch(int b); +#define MSB8(x) ((x) >> 8) + // SH2 faking +#define FAKE_SH2 +int p32x_csum_faked; +#ifdef FAKE_SH2 static const u16 comm_fakevals[] = { 0x4d5f, 0x4f4b, // M_OK 0x535f, 0x4f4b, // S_OK @@ -17,55 +22,78 @@ static const u16 comm_fakevals[] = { 0x5333, 0x4d33, 0x0000, 0x0000, // eq for doom 0x0002, // Mortal Kombat - 0, // pad +// 0, // pad }; -int p32x_csum_faked; + +static u32 sh2_comm_faker(u32 a) +{ + static int f = 0; + if (a == 0x28 && !p32x_csum_faked) { + p32x_csum_faked = 1; + return *(unsigned short *)(Pico.rom + 0x18e); + } + if (f >= sizeof(comm_fakevals) / sizeof(comm_fakevals[0])) + f = 0; + return comm_fakevals[f++]; +} +#endif static u32 p32x_reg_read16(u32 a) { a &= 0x3e; - // SH2 faker +#ifdef FAKE_SH2 if ((a & 0x30) == 0x20) - { - static int f = 0; - if (a == 0x28 && !p32x_csum_faked) { - p32x_csum_faked = 1; - return *(unsigned short *)(Pico.rom + 0x18e); - } - if (f >= sizeof(comm_fakevals) / sizeof(comm_fakevals[0])) - f = 0; - return comm_fakevals[f++]; - } + return sh2_comm_faker(a); +#endif return Pico32x.regs[a / 2]; } static void p32x_reg_write8(u32 a, u32 d) { + u16 *r = Pico32x.regs; a &= 0x3f; - if (a == 1 && !(Pico32x.regs[0] & 1)) { - Pico32x.regs[0] |= 1; + if (a == 1 && !(r[0] & 1)) { + r[0] |= 1; Pico32xStartup(); return; } - if (!(Pico32x.regs[0] & 1)) + if (!(r[0] & 1)) return; - if (a == 5) { - d &= 7; - if (Pico32x.regs[4/2] != d) { - Pico32x.regs[4/2] = d; - bank_switch(d); - return; - } + switch (a) { + case 0: + r[0] = (r[0] & 0x83) | ((d << 8) & P32XS_FM); + break; + case 5: + d &= 7; + if (r[4/2] != d) { + r[4/2] = d; + bank_switch(d); + } + break; } } static void p32x_reg_write16(u32 a, u32 d) { + u16 *r = Pico32x.regs; + a &= 0x3e; + + switch (a) { + case 0: + r[0] = (r[0] & 0x83) | (d & P32XS_FM); + return; + } + + if ((a & 0x30) == 0x20) { + r[a / 2] = d; + return; + } + p32x_reg_write8(a + 1, d); } @@ -113,6 +141,33 @@ static void p32x_vdp_write16(u32 a, u32 d) p32x_vdp_write8(a | 1, d); } +// SH2 regs +static u32 p32x_sh2reg_read16(u32 a) +{ + a &= 0xff; // ? + if (a == 0) { + return (Pico32x.regs[0] & P32XS_FM) | P32XS2_ADEN; + } + + return 0; +} + +static void p32x_sh2reg_write8(u32 a, u32 d) +{ +} + +static void p32x_sh2reg_write16(u32 a, u32 d) +{ + a &= 0xff; + + if ((a & 0x30) == 0x20) { + Pico32x.regs[a/2] = d; + return; + } + + p32x_sh2reg_write8(a | 1, d); +} + // default 32x handlers u32 PicoRead8_32x(u32 a) { @@ -298,6 +353,152 @@ static void bank_switch(int b) elprintf(EL_32X, "bank %06x-%06x -> %06x", 0x900000, 0x900000 + rs - 1, bank); } +// ----------------------------------------------------------------- +// SH2 +// ----------------------------------------------------------------- + +u32 pico32x_read8(u32 a) +{ + u32 d = 0; + if (a < sizeof(Pico32xMem->sh2_rom_m)) + return Pico32xMem->sh2_rom_m[a ^ 1]; + + if ((a & 0x0ffc0000) == 0x06000000) + return Pico32xMem->sdram[(a & 0x3ffff) ^ 1]; + + if ((a & 0x0fc00000) == 0x02000000) + if ((a & 0x003fffff) < Pico.romsize) + return Pico.rom[(a & 0x3fffff) ^ 1]; + + if ((a & 0x0fffff00) == 0x4000) { + d = p32x_sh2reg_read16(a); + goto out_16to8; + } + + if ((a & 0x0fffff00) == 0x4100) { + d = p32x_vdp_read16(a); + goto out_16to8; + } + + if ((a & 0x0fffff00) == 0x4200) { + d = Pico32xMem->pal[(a & 0x1ff) / 2]; + goto out_16to8; + } + + elprintf(EL_UIO, "sh2 unmapped r8 [%08x] %02x @%06x", a, d, ash2_pc()); + return d; + +out_16to8: + if (a & 1) + d &= 0xff; + else + d >>= 8; + + elprintf(EL_32X, "sh2 r8 [%08x] %02x @%06x", a, d, ash2_pc()); + return d; +} + +u32 pico32x_read16(u32 a) +{ + u32 d = 0; + if (a < sizeof(Pico32xMem->sh2_rom_m)) + return *(u16 *)(Pico32xMem->sh2_rom_m + a); + + if ((a & 0x0ffc0000) == 0x06000000) + return ((u16 *)Pico32xMem->sdram)[(a & 0x3ffff) / 2]; + + if ((a & 0x0fc00000) == 0x02000000) + if ((a & 0x003fffff) < Pico.romsize) + return ((u16 *)Pico.rom)[(a & 0x3fffff) / 2]; + + if ((a & 0x0fffff00) == 0x4000) { + d = p32x_sh2reg_read16(a); + goto out; + } + + if ((a & 0x0fffff00) == 0x4100) { + d = p32x_vdp_read16(a); + goto out; + } + + if ((a & 0x0fffff00) == 0x4200) { + d = Pico32xMem->pal[(a & 0x1ff) / 2]; + goto out; + } + + elprintf(EL_UIO, "sh2 unmapped r16 [%08x] %04x @%06x", a, d, ash2_pc()); + return d; + +out: + elprintf(EL_32X, "sh2 r16 [%08x] %04x @%06x", a, d, ash2_pc()); + return d; +} + +u32 pico32x_read32(u32 a) +{ +// elprintf(EL_UIO, "sh2 r32 [%08x] %08x @%06x", a, d, ash2_pc()); + return (pico32x_read16(a) << 16) | pico32x_read16(a + 2); +} + +void pico32x_write8(u32 a, u32 d) +{ + if ((a & 0x0ffffc00) == 0x4000) + elprintf(EL_32X, "sh2 w8 [%08x] %02x @%06x", a, d & 0xff, ash2_pc()); + + if ((a & 0x0ffc0000) == 0x06000000) { + Pico32xMem->sdram[(a & 0x3ffff) ^ 1] = d; + return; + } + + if ((a & 0x0fffff00) == 0x4100) { + p32x_vdp_write8(a, d); + return; + } + + if ((a & 0x0fffff00) == 0x4000) { + p32x_sh2reg_write8(a, d); + return; + } + + elprintf(EL_UIO, "sh2 unmapped w8 [%08x] %02x @%06x", a, d & 0xff, ash2_pc()); +} + +void pico32x_write16(u32 a, u32 d) +{ + if ((a & 0x0ffffc00) == 0x4000) + elprintf(EL_32X, "sh2 w16 [%08x] %04x @%06x", a, d & 0xffff, ash2_pc()); + + if ((a & 0x0ffc0000) == 0x06000000) { + ((u16 *)Pico32xMem->sdram)[(a & 0x3ffff) / 2] = d; + return; + } + + if ((a & 0x0fffff00) == 0x4100) { + p32x_vdp_write16(a, d); + return; + } + + if ((a & 0x0ffffe00) == 0x4200) { + Pico32xMem->pal[(a & 0x1ff) / 2] = d; + Pico32x.dirty_pal = 1; + return; + } + + if ((a & 0x0fffff00) == 0x4000) { + p32x_sh2reg_write16(a, d); + return; + } + + elprintf(EL_UIO, "sh2 unmapped w16 [%08x] %04x @%06x", a, d & 0xffff, ash2_pc()); +} + +void pico32x_write32(u32 a, u32 d) +{ +// elprintf(EL_UIO, "sh2 w32 [%08x] %08x @%06x", a, d, ash2_pc()); + pico32x_write16(a, d >> 16); + pico32x_write16(a + 2, d); +} + #define HWSWAP(x) (((x) << 16) | ((x) >> 16)) void PicoMemSetup32x(void) { @@ -333,6 +534,24 @@ void PicoMemSetup32x(void) // fill remaining mem with ROM memcpy(Pico32xMem->m68k_rom + 0x100, Pico.rom + 0x100, sizeof(Pico32xMem->m68k_rom) - 0x100); + // 32X ROM + // TODO: move + { + FILE *f = fopen("32X_M_BIOS.BIN", "rb"); + int i; + if (f == NULL) { + printf("missing BIOS\n"); + exit(1); + } + fread(Pico32xMem->sh2_rom_m, 1, sizeof(Pico32xMem->sh2_rom_m), f); + fclose(f); + for (i = 0; i < sizeof(Pico32xMem->sh2_rom_m); i += 2) { + int t = Pico32xMem->sh2_rom_m[i]; + Pico32xMem->sh2_rom_m[i] = Pico32xMem->sh2_rom_m[i + 1]; + Pico32xMem->sh2_rom_m[i + 1] = t; + } + } + // cartridge area becomes unmapped // XXX: we take the easy way and don't unmap ROM, // so that we can avoid handling the RV bit. diff --git a/pico/pico_cmn.c b/pico/pico_cmn.c index 407309a..212ed8d 100644 --- a/pico/pico_cmn.c +++ b/pico/pico_cmn.c @@ -1,5 +1,5 @@ // common code for Pico.c and cd/Pico.c -// (c) Copyright 2007,2008 Grazvydas "notaz" Ignotas +// (c) Copyright 2007-2009 Grazvydas "notaz" Ignotas #define CYCLES_M68K_LINE 488 // suitable for both PAL/NTSC #define CYCLES_M68K_VINT_LAG 68 @@ -15,9 +15,16 @@ } // CPUS_RUN +#ifndef RUN_SH2S +#define RUN_SH2S +#endif + #ifndef PICO_CD #define CPUS_RUN(m68k_cycles,s68k_cycles) \ - SekRunM68k(m68k_cycles); +{ \ + SekRunM68k(m68k_cycles); \ + RUN_SH2S \ +} #else #define CPUS_RUN(m68k_cycles,s68k_cycles) \ { \ diff --git a/pico/pico_int.h b/pico/pico_int.h index 3cdd997..e50d468 100644 --- a/pico/pico_int.h +++ b/pico/pico_int.h @@ -226,6 +226,13 @@ extern unsigned long z80_write_map[0x10000 >> Z80_MEM_SHIFT]; typedef unsigned char (z80_read_f)(unsigned short a); typedef void (z80_write_f)(unsigned int a, unsigned char data); +// ----------------------- SH2 CPU ----------------------- + +#include "cpu/sh2mame/sh2.h" + +SH2 msh2, ssh2; +#define ash2_pc() msh2.ppc + // --------------------------------------------------------- // main oscillator clock which controls timing @@ -389,15 +396,18 @@ typedef struct #define Pico_mcd ((mcd_state *)Pico.rom) // 32X -#define P32XV_nPAL (1<<15) -#define P32XV_PRI (1<< 7) -#define P32XV_Mx (3<< 0) +#define P32XS_FM (1<<15) +#define P32XS2_ADEN (1<< 9) + +#define P32XV_nPAL (1<<15) +#define P32XV_PRI (1<< 7) +#define P32XV_Mx (3<< 0) -#define P32XV_VBLK (1<<15) -#define P32XV_HBLK (1<<14) -#define P32XV_PEN (1<<13) -#define P32XV_nFEN (1<< 1) -#define P32XV_FS (1<< 0) +#define P32XV_VBLK (1<<15) +#define P32XV_HBLK (1<<14) +#define P32XV_PEN (1<<13) +#define P32XV_nFEN (1<< 1) +#define P32XV_FS (1<< 0) struct Pico32x { @@ -413,6 +423,8 @@ struct Pico32xMem unsigned char sdram[0x40000]; unsigned short dram[2][0x20000/2]; // AKA fb unsigned char m68k_rom[0x10000]; // 0x100; using M68K_BANK_SIZE + unsigned char sh2_rom_m[0x800]; + unsigned char sh2_rom_s[0x400]; unsigned short pal[0x100]; unsigned short pal_native[0x100]; // converted to native (for renderer) }; diff --git a/platform/linux/Makefile b/platform/linux/Makefile index 32fa3c5..0358521 100644 --- a/platform/linux/Makefile +++ b/platform/linux/Makefile @@ -71,6 +71,8 @@ else DEFINES += _USE_CZ80 OBJS += cpu/cz80/cz80.o endif +# sh2 +OBJS += cpu/sh2mame/sh2pico.o # misc ifeq "$(use_fame)" "1" ifeq "$(use_musashi)" "1" @@ -83,7 +85,7 @@ CFLAGS += $(addprefix -D,$(DEFINES)) vpath %.c = ../.. DIRS = platform platform/gp2x platform/common pico pico/cd pico/pico pico/sound pico/carthw/svp \ - pico/32x zlib unzip cpu cpu/musashi cpu/fame cpu/mz80 cpu/cz80 + pico/32x zlib unzip cpu cpu/musashi cpu/fame cpu/mz80 cpu/cz80 cpu/sh2mame all: mkdirs PicoDrive clean: tidy -- 2.39.2