mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
Finish migrating to new mem handling. Make carthw db external.
Still need to fix asm and protection emulation. git-svn-id: file:///home/notaz/opt/svn/PicoDrive@769 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
af37bca858
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45f2f245f5
30 changed files with 948 additions and 1027 deletions
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@ -1,86 +1,79 @@
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/*
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* Support for a few cart mappers.
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*
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* (c) Copyright 2008, Grazvydas "notaz" Ignotas
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* (c) Copyright 2008-2009, Grazvydas "notaz" Ignotas
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* Free for non-commercial use.
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*
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*
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* I should better do some pointer stuff here. But as none of these bankswitch
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* while the game runs, memcpy will suffice.
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*/
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#include "../pico_int.h"
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#include "../memory.h"
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/* 12-in-1 and 4-in-1. Assuming >= 2MB ROMs here. */
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static unsigned int carthw_12in1_baddr = 0;
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/* Common *-in-1 pirate mapper.
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* Switches banks based on addr lines when /TIME is set.
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* TODO: verify
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*/
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static unsigned int carthw_Xin1_baddr = 0;
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static carthw_state_chunk carthw_12in1_state[] =
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{
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{ CHUNK_CARTHW, sizeof(carthw_12in1_baddr), &carthw_12in1_baddr },
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{ 0, 0, NULL }
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};
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static unsigned int carthw_12in1_read16(unsigned int a, int realsize)
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{
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// ??
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elprintf(EL_UIO, "12-in-1: read [%06x] @ %06x", a, SekPc);
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return 0;
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}
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static void carthw_12in1_write8(unsigned int a, unsigned int d, int realsize)
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static void carthw_Xin1_do(u32 a, int mask, int shift)
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{
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int len;
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if (a < 0xA13000 || a >= 0xA13040) {
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/* 4-in-1 has Real Deal Boxing, which uses serial eeprom,
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* but I really doubt that pirate cart had it */
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if (a != 0x200001)
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elprintf(EL_ANOMALY, "12-in-1: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
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return;
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}
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carthw_12in1_baddr = a;
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a &= 0x3f; a <<= 16;
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carthw_Xin1_baddr = a;
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a &= mask;
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a <<= shift;
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len = Pico.romsize - a;
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if (len <= 0) {
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elprintf(EL_ANOMALY|EL_STATUS, "12-in-1: missing bank @ %06x", a);
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elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a);
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return;
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}
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memcpy(Pico.rom, Pico.rom + Pico.romsize + a, len);
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len = (len + M68K_BANK_MASK) & ~M68K_BANK_MASK;
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cpu68k_map_set(m68k_read8_map, 0x000000, len - 1, Pico.rom + a, 0);
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cpu68k_map_set(m68k_read16_map, 0x000000, len - 1, Pico.rom + a, 0);
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}
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static void carthw_12in1_reset(void)
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static carthw_state_chunk carthw_Xin1_state[] =
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{
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carthw_12in1_write8(0xA13000, 0, 0);
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}
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{ CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr },
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{ 0, 0, NULL }
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};
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static void carthw_12in1_statef(void)
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// TODO: test a0, reads, w16
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static void carthw_Xin1_write8(u32 a, u32 d)
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{
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carthw_12in1_write8(carthw_12in1_baddr, 0, 0);
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}
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void carthw_12in1_startup(void)
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{
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void *tmp;
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elprintf(EL_STATUS, "12-in-1 mapper detected");
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tmp = realloc(Pico.rom, Pico.romsize * 2);
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if (tmp == NULL)
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{
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elprintf(EL_STATUS, "OOM");
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if ((a & 0xffff00) != 0xa13000) {
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PicoWrite8_io(a, d);
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return;
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}
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Pico.rom = tmp;
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memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
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PicoRead16Hook = carthw_12in1_read16;
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PicoWrite8Hook = carthw_12in1_write8;
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PicoResetHook = carthw_12in1_reset;
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PicoLoadStateHook = carthw_12in1_statef;
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carthw_chunks = carthw_12in1_state;
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carthw_Xin1_do(a, 0x3f, 16);
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}
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static void carthw_Xin1_mem_setup(void)
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{
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cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1);
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}
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static void carthw_Xin1_reset(void)
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{
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carthw_Xin1_write8(0xa13000, 0);
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}
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static void carthw_Xin1_statef(void)
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{
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carthw_Xin1_write8(carthw_Xin1_baddr, 0);
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}
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void carthw_Xin1_startup(void)
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{
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elprintf(EL_STATUS, "X-in-1 mapper startup");
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PicoCartMemSetup = carthw_Xin1_mem_setup;
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PicoResetHook = carthw_Xin1_reset;
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PicoLoadStateHook = carthw_Xin1_statef;
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carthw_chunks = carthw_Xin1_state;
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}
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@ -88,9 +81,8 @@ void carthw_12in1_startup(void)
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* http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
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*/
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static int realtec_bank = 0x80000000, realtec_size = 0x80000000;
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static int realtec_romsize = 0;
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static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize)
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static void carthw_realtec_write8(u32 a, u32 d)
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{
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int i, bank_old = realtec_bank, size_old = realtec_size;
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@ -121,105 +113,92 @@ static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize)
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(realtec_bank != bank_old || realtec_size != size_old))
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{
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elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc);
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if (realtec_size > realtec_romsize - realtec_bank || realtec_bank >= realtec_romsize)
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if (realtec_size > Pico.romsize - realtec_bank)
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{
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elprintf(EL_ANOMALY, "realtec: bank too large / out of range?");
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return;
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}
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for (i = 0; i < 0x400000; i += realtec_size)
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memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_bank, realtec_size);
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for (i = 0; i < 0x400000; i += realtec_size) {
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cpu68k_map_set(m68k_read8_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
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cpu68k_map_set(m68k_read16_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
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}
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}
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}
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static void carthw_realtec_reset(void)
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{
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int i;
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/* map boot code */
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for (i = 0; i < 0x400000; i += 0x2000)
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memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_romsize - 0x2000, 0x2000);
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for (i = 0; i < 0x400000; i += M68K_BANK_SIZE) {
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cpu68k_map_set(m68k_read8_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
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cpu68k_map_set(m68k_read16_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
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}
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cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1);
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realtec_bank = realtec_size = 0x80000000;
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}
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void carthw_realtec_startup(void)
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{
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void *tmp;
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int i;
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elprintf(EL_STATUS, "Realtec mapper detected");
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elprintf(EL_STATUS, "Realtec mapper startup");
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realtec_romsize = Pico.romsize;
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Pico.romsize = 0x400000;
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tmp = realloc(Pico.rom, 0x400000 + realtec_romsize);
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// allocate additional bank for boot code
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// (we know those ROMs have aligned size)
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tmp = realloc(Pico.rom, Pico.romsize + M68K_BANK_SIZE);
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if (tmp == NULL)
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{
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elprintf(EL_STATUS, "OOM");
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return;
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}
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Pico.rom = tmp;
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memcpy(Pico.rom + 0x400000, Pico.rom, realtec_romsize);
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PicoWrite8Hook = carthw_realtec_write8;
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// create bank for boot code
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for (i = 0; i < M68K_BANK_SIZE; i += 0x2000)
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memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000);
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PicoResetHook = carthw_realtec_reset;
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}
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/* Radica mapper, based on DevSter's info
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* http://devster.monkeeh.com/sega/radica/
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* XXX: mostly the same as X-in-1, merge?
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*/
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static unsigned int carthw_radica_baddr = 0;
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static carthw_state_chunk carthw_radica_state[] =
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static u32 carthw_radica_read16(u32 a)
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{
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{ CHUNK_CARTHW, sizeof(carthw_radica_baddr), &carthw_radica_baddr },
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{ 0, 0, NULL }
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};
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if ((a & 0xffff00) != 0xa13000)
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return PicoRead16_io(a);
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static unsigned int carthw_radica_read16(unsigned int a, int realsize)
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{
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if ((a & 0xffff80) != 0xa13000) {
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elprintf(EL_UIO, "radica: r16 %06x", a);
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return 0;
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}
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carthw_radica_baddr = a;
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a = (a & 0x7e) << 15;
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if (a >= Pico.romsize) {
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elprintf(EL_ANOMALY|EL_STATUS, "radica: missing bank @ %06x", a);
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return 0;
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}
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memcpy(Pico.rom, Pico.rom + Pico.romsize + a, Pico.romsize - a);
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carthw_Xin1_do(a, 0x7e, 15);
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return 0;
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}
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static void carthw_radica_mem_setup(void)
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{
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cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1);
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}
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static void carthw_radica_statef(void)
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{
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carthw_radica_read16(carthw_radica_baddr, 0);
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carthw_radica_read16(carthw_Xin1_baddr);
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}
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static void carthw_radica_reset(void)
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{
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memcpy(Pico.rom, Pico.rom + Pico.romsize, Pico.romsize);
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carthw_radica_read16(0xa13000);
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}
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void carthw_radica_startup(void)
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{
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void *tmp;
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elprintf(EL_STATUS, "Radica mapper startup");
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elprintf(EL_STATUS, "Radica mapper detected");
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tmp = realloc(Pico.rom, Pico.romsize * 2);
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if (tmp == NULL)
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{
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elprintf(EL_STATUS, "OOM");
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return;
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}
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Pico.rom = tmp;
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memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
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PicoRead16Hook = carthw_radica_read16;
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PicoResetHook = carthw_radica_reset;
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PicoCartMemSetup = carthw_radica_mem_setup;
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PicoResetHook = carthw_radica_reset;
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PicoLoadStateHook = carthw_radica_statef;
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carthw_chunks = carthw_radica_state;
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carthw_chunks = carthw_Xin1_state;
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}
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