From 8b9dbcde387f567a154e15ca14a0c6e5b3efa3ef Mon Sep 17 00:00:00 2001 From: notaz Date: Sun, 21 Jan 2018 18:55:38 +0200 Subject: [PATCH] 32x: implement standard/ssf2 mapper --- cpu/sh2/compiler.c | 5 ++- pico/32x/memory.c | 85 +++++++++++++++++++++++++++++++------------- pico/cart.c | 12 +++++-- pico/carthw/carthw.c | 75 ++++++++++++++++++++++---------------- pico/carthw/carthw.h | 6 +++- pico/pico_int.h | 2 ++ 6 files changed, 126 insertions(+), 59 deletions(-) diff --git a/cpu/sh2/compiler.c b/cpu/sh2/compiler.c index 089f3ef..aa41a84 100644 --- a/cpu/sh2/compiler.c +++ b/cpu/sh2/compiler.c @@ -2912,8 +2912,10 @@ end_op: tcache_id, blkid_main, tcache_ptr - tcache_bases[tcache_id], tcache_sizes[tcache_id], insns_compiled, host_insn_count, (float)host_insn_count / insns_compiled); - if ((sh2->pc & 0xc6000000) == 0x02000000) // ROM + if ((sh2->pc & 0xc6000000) == 0x02000000) { // ROM dbg(2, " hash collisions %d/%d", hash_collisions, block_counts[tcache_id]); + Pico32x.emu_flags |= P32XF_DRC_ROM_C; + } /* printf("~~~\n"); tcache_dsm_ptrs[tcache_id] = block_entry_ptr; @@ -3292,6 +3294,7 @@ void sh2_drc_flush_all(void) flush_tcache(0); flush_tcache(1); flush_tcache(2); + Pico32x.emu_flags &= ~P32XF_DRC_ROM_C; } void sh2_drc_mem_setup(SH2 *sh2) diff --git a/pico/32x/memory.c b/pico/32x/memory.c index d9f18db..ef9e3b7 100644 --- a/pico/32x/memory.c +++ b/pico/32x/memory.c @@ -47,7 +47,7 @@ static const char str_mars[] = "MARS"; void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s; struct Pico32xMem *Pico32xMem; -static void bank_switch(int b); +static void bank_switch_rom_68k(int b); // addressing byte in 16bit reg #define REG8IN16(ptr, offs) ((u8 *)ptr)[(offs) ^ 1] @@ -276,7 +276,7 @@ static void p32x_reg_write8(u32 a, u32 d) d &= 3; if (r[0x04 / 2] != d) { r[0x04 / 2] = d; - bank_switch(d); + bank_switch_rom_68k(d); } return; case 0x06: // ignored, always 0 @@ -862,7 +862,7 @@ static void PicoWrite8_32x_on(u32 a, u32 d) else PicoWrite8_io(a, d); if (a == 0xa130f1) - bank_switch(Pico32x.regs[4 / 2]); + bank_switch_rom_68k(Pico32x.regs[4 / 2]); return; } @@ -900,7 +900,7 @@ static void PicoWrite16_32x_on(u32 a, u32 d) else PicoWrite16_io(a, d); if (a == 0xa130f0) - bank_switch(Pico32x.regs[4 / 2]); + bank_switch_rom_68k(Pico32x.regs[4 / 2]); return; } @@ -1145,9 +1145,9 @@ static void bank_map_handler(void) cpu68k_map_set(m68k_read16_map, 0x900000, 0x9fffff, PicoRead16_bank, 1); } -static void bank_switch(int b) +static void bank_switch_rom_68k(int b) { - unsigned int rs, bank; + unsigned int rs, bank, bank2; if (Pico.m.ncart_in) return; @@ -1164,15 +1164,25 @@ static void bank_switch(int b) return; } - // 32X ROM (unbanked, XXX: consider mirroring?) + // 32X ROM (XXX: consider mirroring?) rs = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; - rs -= bank; - if (rs > 0x100000) - rs = 0x100000; - cpu68k_map_set(m68k_read8_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); - cpu68k_map_set(m68k_read16_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); - - elprintf(EL_32X, "bank %06x-%06x -> %06x", 0x900000, 0x900000 + rs - 1, bank); + if (!carthw_ssf2_active) { + rs -= bank; + if (rs > 0x100000) + rs = 0x100000; + cpu68k_map_set(m68k_read8_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); + cpu68k_map_set(m68k_read16_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); + elprintf(EL_32X, "bank %06x-%06x -> %06x", 0x900000, 0x900000 + rs - 1, bank); + } + else { + bank = bank >> 19; + bank2 = carthw_ssf2_banks[bank + 0] << 19; + cpu68k_map_set(m68k_read8_map, 0x900000, 0x97ffff, Pico.rom + bank2, 0); + cpu68k_map_set(m68k_read16_map, 0x900000, 0x97ffff, Pico.rom + bank2, 0); + bank2 = carthw_ssf2_banks[bank + 1] << 19; + cpu68k_map_set(m68k_read8_map, 0x980000, 0x9fffff, Pico.rom + bank2, 0); + cpu68k_map_set(m68k_read16_map, 0x980000, 0x9fffff, Pico.rom + bank2, 0); + } } // ----------------------------------------------------------------- @@ -1234,6 +1244,13 @@ static u32 sh2_read8_da(u32 a, SH2 *sh2) return sh2->data_array[(a & 0xfff) ^ 1]; } +// for ssf2 +static u32 sh2_read8_rom(u32 a, SH2 *sh2) +{ + u32 bank = carthw_ssf2_banks[(a >> 19) & 7] << 19; + return Pico.rom[(bank + (a & 0x7ffff)) ^ 1]; +} + // read16 static u32 sh2_read16_unmapped(u32 a, SH2 *sh2) { @@ -1284,6 +1301,12 @@ static u32 sh2_read16_da(u32 a, SH2 *sh2) return ((u16 *)sh2->data_array)[(a & 0xfff) / 2]; } +static u32 sh2_read16_rom(u32 a, SH2 *sh2) +{ + u32 bank = carthw_ssf2_banks[(a >> 19) & 7] << 19; + return *(u16 *)(Pico.rom + bank + (a & 0x7fffe)); +} + // writes static void REGPARM(3) sh2_write_ignore(u32 a, u32 d, SH2 *sh2) { @@ -1750,6 +1773,19 @@ void Pico32xSwapDRAM(int b) sh2_write16_map[0x04/2] = sh2_write16_map[0x24/2] = b ? sh2_write16_dram1 : sh2_write16_dram0; } +static void bank_switch_rom_sh2(void) +{ + if (!carthw_ssf2_active) { + // easy + sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr = + sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_MEMORY(Pico.rom); + } + else { + sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr = MAP_HANDLER(sh2_read8_rom); + sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_HANDLER(sh2_read16_rom); + } +} + void PicoMemSetup32x(void) { unsigned int rs; @@ -1784,15 +1820,9 @@ void PicoMemSetup32x(void) cpu68k_map_set(m68k_read16_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0); cpu68k_map_set(m68k_write8_map, 0x880000, 0x880000 + rs - 1, PicoWrite8_cart, 1); cpu68k_map_set(m68k_write16_map, 0x880000, 0x880000 + rs - 1, PicoWrite16_cart, 1); -#ifdef EMU_F68K - // setup FAME fetchmap - PicoCpuFM68k.Fetch[0] = (uptr)Pico32xMem->m68k_rom; - for (rs = 0x88; rs < 0x90; rs++) - PicoCpuFM68k.Fetch[rs] = (uptr)Pico.rom - 0x880000; -#endif // 32X ROM (banked) - bank_switch(0); + bank_switch_rom_68k(0); cpu68k_map_set(m68k_write8_map, 0x900000, 0x9fffff, PicoWrite8_bank, 1); cpu68k_map_set(m68k_write16_map, 0x900000, 0x9fffff, PicoWrite16_bank, 1); } @@ -1827,8 +1857,7 @@ void PicoMemSetup32x(void) sh2_write8_map[0x00/2] = sh2_write8_map[0x20/2] = sh2_write8_cs0; sh2_write16_map[0x00/2] = sh2_write16_map[0x20/2] = sh2_write16_cs0; // CS1 - ROM - sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr = - sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_MEMORY(Pico.rom); + bank_switch_rom_sh2(); sh2_read8_map[0x02/2].mask = sh2_read8_map[0x22/2].mask = sh2_read16_map[0x02/2].mask = sh2_read16_map[0x22/2].mask = 0x3fffff; // FIXME // CS2 - DRAM - done by Pico32xSwapDRAM() @@ -1868,9 +1897,17 @@ void PicoMemSetup32x(void) z80_map_set(z80_write_map, 0x8000, 0xffff, z80_md_bank_write_32x, 1); } +void p32x_update_banks(void) +{ + bank_switch_rom_68k(Pico32x.regs[4 / 2]); + bank_switch_rom_sh2(); + if (Pico32x.emu_flags & P32XF_DRC_ROM_C) + sh2_drc_flush_all(); +} + void Pico32xMemStateLoaded(void) { - bank_switch(Pico32x.regs[4 / 2]); + bank_switch_rom_68k(Pico32x.regs[4 / 2]); Pico32xSwapDRAM((Pico32x.vdp_regs[0x0a / 2] & P32XV_FS) ^ P32XV_FS); memset(Pico32xMem->pwm, 0, sizeof(Pico32xMem->pwm)); Pico32x.dirty_pal = 1; diff --git a/pico/cart.c b/pico/cart.c index 58a9a68..9fcb01a 100644 --- a/pico/cart.c +++ b/pico/cart.c @@ -778,7 +778,8 @@ static int is_expr(const char *expr, char **pr) #include "carthw_cfg.c" -static void parse_carthw(const char *carthw_cfg, int *fill_sram) +static void parse_carthw(const char *carthw_cfg, int *fill_sram, + int *hw_detected) { int line = 0, any_checks_passed = 0, skip_sect = 0; const char *s, *builtin = builtin_carthw_cfg; @@ -902,6 +903,7 @@ static void parse_carthw(const char *carthw_cfg, int *fill_sram) if (is_expr("hw", &p)) { if (!any_checks_passed) goto no_checks; + *hw_detected = 1; rstrip(p); if (strcmp(p, "svp") == 0) @@ -925,6 +927,7 @@ static void parse_carthw(const char *carthw_cfg, int *fill_sram) else { elprintf(EL_STATUS, "carthw:%d: unsupported mapper: %s", line, p); skip_sect = 1; + *hw_detected = 0; } continue; } @@ -1038,6 +1041,7 @@ no_checks: */ static void PicoCartDetect(const char *carthw_cfg) { + int carthw_detected = 0; int fill_sram = 0; memset(&Pico.sv, 0, sizeof(Pico.sv)); @@ -1067,7 +1071,11 @@ static void PicoCartDetect(const char *carthw_cfg) Pico.sv.eeprom_bit_out= 0; if (carthw_cfg != NULL) - parse_carthw(carthw_cfg, &fill_sram); + parse_carthw(carthw_cfg, &fill_sram, &carthw_detected); + + // assume the standard mapper for large roms + if (!carthw_detected && Pico.romsize > 0x400000) + carthw_ssf2_startup(); if (Pico.sv.flags & SRF_ENABLED) { diff --git a/pico/carthw/carthw.c b/pico/carthw/carthw.c index cd47e7c..41dc6bd 100644 --- a/pico/carthw/carthw.c +++ b/pico/carthw/carthw.c @@ -21,63 +21,76 @@ static int have_bank(u32 base) return 1; } -/* The SSFII mapper */ -static unsigned char ssf2_banks[8]; +/* standard/ssf2 mapper */ +int carthw_ssf2_active; +unsigned char carthw_ssf2_banks[8]; static carthw_state_chunk carthw_ssf2_state[] = { - { CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks }, - { 0, 0, NULL } + { CHUNK_CARTHW, sizeof(carthw_ssf2_banks), &carthw_ssf2_banks }, + { 0, 0, NULL } }; static void carthw_ssf2_write8(u32 a, u32 d) { - u32 target, base; + u32 target, base; - if ((a & 0xfffff0) != 0xa130f0) { - PicoWrite8_io(a, d); - return; - } + if ((a & 0xfffff0) != 0xa130f0) { + PicoWrite8_io(a, d); + return; + } - a &= 0x0e; - if (a == 0) - return; + a &= 0x0e; + if (a == 0) + return; + if (carthw_ssf2_banks[a >> 1] == d) + return; - ssf2_banks[a >> 1] = d; - base = d << 19; - target = a << 18; - if (!have_bank(base)) - return; + base = d << 19; + target = a << 18; + if (!have_bank(base)) + return; + carthw_ssf2_banks[a >> 1] = d; - cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0); - cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0); + cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0); + cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0); + if (PicoIn.AHW & PAHW_32X) + p32x_update_banks(); } static void carthw_ssf2_mem_setup(void) { - cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1); + cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1); } static void carthw_ssf2_statef(void) { - int i; - for (i = 1; i < 8; i++) - carthw_ssf2_write8(0xa130f0 | (i << 1), ssf2_banks[i]); + int i; + for (i = 1; i < 8; i++) + carthw_ssf2_write8(0xa130f0 | (i << 1), carthw_ssf2_banks[i]); +} + +static void carthw_ssf2_unload(void) +{ + memset(carthw_ssf2_banks, 0, sizeof(carthw_ssf2_banks)); + carthw_ssf2_active = 0; } void carthw_ssf2_startup(void) { - int i; + int i; - elprintf(EL_STATUS, "SSF2 mapper startup"); + elprintf(EL_STATUS, "SSF2 mapper startup"); - // default map - for (i = 0; i < 8; i++) - ssf2_banks[i] = i; + // default map + for (i = 0; i < 8; i++) + carthw_ssf2_banks[i] = i; - PicoCartMemSetup = carthw_ssf2_mem_setup; - PicoLoadStateHook = carthw_ssf2_statef; - carthw_chunks = carthw_ssf2_state; + PicoCartMemSetup = carthw_ssf2_mem_setup; + PicoLoadStateHook = carthw_ssf2_statef; + PicoCartUnloadHook = carthw_ssf2_unload; + carthw_chunks = carthw_ssf2_state; + carthw_ssf2_active = 1; } diff --git a/pico/carthw/carthw.h b/pico/carthw/carthw.h index 869a5cd..640e0ef 100644 --- a/pico/carthw/carthw.h +++ b/pico/carthw/carthw.h @@ -14,8 +14,12 @@ void PicoSVPInit(void); void PicoSVPStartup(void); void PicoSVPMemSetup(void); -/* misc */ +/* standard/ssf2 mapper */ +extern int carthw_ssf2_active; +extern unsigned char carthw_ssf2_banks[8]; void carthw_ssf2_startup(void); + +/* misc */ void carthw_Xin1_startup(void); void carthw_realtec_startup(void); void carthw_radica_startup(void); diff --git a/pico/pico_int.h b/pico/pico_int.h index da0fbb9..cb1c21d 100644 --- a/pico/pico_int.h +++ b/pico/pico_int.h @@ -546,6 +546,7 @@ typedef struct #define P32XF_68KCPOLL (1 << 0) #define P32XF_68KVPOLL (1 << 1) #define P32XF_Z80_32X_IO (1 << 7) // z80 does 32x io +#define P32XF_DRC_ROM_C (1 << 8) // cached code from ROM #define P32XI_VRES (1 << 14/2) // IRL/2 #define P32XI_VINT (1 << 12/2) @@ -914,6 +915,7 @@ void PicoWrite16_32x(unsigned int a, unsigned int d); void PicoMemSetup32x(void); void Pico32xSwapDRAM(int b); void Pico32xMemStateLoaded(void); +void p32x_update_banks(void); void p32x_m68k_poll_event(unsigned int flags); void p32x_sh2_poll_event(SH2 *sh2, unsigned int flags, unsigned int m68k_cycles); -- 2.39.2