From c33273fa020e853f14c003f25c3ba17a6befa590 Mon Sep 17 00:00:00 2001 From: ekeeke31 Date: Sat, 10 Mar 2012 19:57:19 +0000 Subject: [PATCH] .fixed VDP register reset state on SG-1000 .improved SG-1000 default memory mapping .added support for SG-1000 RAM extension adapters (both types) and recent SMS Power dumps using them --- source/cart_hw/sms_cart.c | 116 +++++++++++++++++++++++++------------- source/vdp_ctrl.c | 3 + 2 files changed, 79 insertions(+), 40 deletions(-) diff --git a/source/cart_hw/sms_cart.c b/source/cart_hw/sms_cart.c index 66ffca3..7f83129 100644 --- a/source/cart_hw/sms_cart.c +++ b/source/cart_hw/sms_cart.c @@ -39,19 +39,22 @@ #include "shared.h" #include "terebi_oekaki.h" -#define MAPPER_NONE (0) -#define MAPPER_TEREBI (1) -#define MAPPER_SEGA (2) -#define MAPPER_SEGA_X (3) -#define MAPPER_CODIES (4) -#define MAPPER_KOREA (5) -#define MAPPER_KOREA_8K (6) -#define MAPPER_KOREA_16K (7) -#define MAPPER_MSX (8) -#define MAPPER_93C46 (9) -#define MAPPER_MULTI (10) +#define MAPPER_NONE (0) +#define MAPPER_TEREBI (1) +#define MAPPER_RAM_8K (2) +#define MAPPER_RAM_8K_EXT1 (3) +#define MAPPER_RAM_8K_EXT2 (4) +#define MAPPER_SEGA (5) +#define MAPPER_SEGA_X (6) +#define MAPPER_CODIES (7) +#define MAPPER_KOREA (8) +#define MAPPER_KOREA_8K (9) +#define MAPPER_KOREA_16K (10) +#define MAPPER_MSX (11) +#define MAPPER_93C46 (12) +#define MAPPER_MULTI (13) -#define GAME_DATABASE_CNT (193) +#define GAME_DATABASE_CNT (208) typedef struct { @@ -118,7 +121,7 @@ static const rominfo_t game_list[GAME_DATABASE_CNT] = {0xDBE8895C, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_CODIES, SYSTEM_GG, REGION_USA}, /* Micro Machines 2 - Turbo Tournament */ {0xC1756BEE, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_CODIES, SYSTEM_GG, REGION_USA}, /* Pete Sampras Tennis */ - /* games using Serial EEPROM */ + /* games using serial EEPROM */ {0x36EBCD6D, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_93C46, SYSTEM_GG, REGION_USA}, /* Majors Pro Baseball */ {0x3D8D0DD6, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_93C46, SYSTEM_GG, REGION_USA}, /* World Series Baseball [v0] */ {0xBB38CFD7, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_93C46, SYSTEM_GG, REGION_USA}, /* World Series Baseball [v1] */ @@ -127,13 +130,32 @@ static const rominfo_t game_list[GAME_DATABASE_CNT] = /* games using Terebi Oekaki graphic board */ {0xDD4A661B, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_TEREBI, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Terebi Oekaki */ - /* games requiring JAPANESE region setting */ + /* games using 8K embedded RAM */ + {0x092F29D6, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K, SYSTEM_SG, REGION_JAPAN_NTSC}, /* The Castle (JP) */ + + /* games requiring 8K RAM extension adapter */ + {0xCE5648C3, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Bomberman Special [DahJee] (TW) */ + {0x223397A1, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* King's Valley (TW) */ + {0x281D2888, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Knightmare (TW) */ + {0x306D5F78, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Rally-X [DahJee] (TW) */ + {0x29E047CC, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Road Fighter (TW) */ + {0x5CBD1163, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Tank Battalion (TW) */ + {0x2E7166D5, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* The Legend of Kage (TW) */ + {0xC550B4F0, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* TwinBee (TW) */ + {0xFC87463C, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT1, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Yie Ar Kung-Fu II (TW) */ + {0x69FC1494, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT2, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Bomberman Special (TW) */ + {0xFFC4EE3F, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT2, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Magical Kid Wiz (TW) */ + {0x2E366CCF, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT2, SYSTEM_SG, REGION_JAPAN_NTSC}, /* The Castle (TW) */ + {0xAAAC12CF, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT2, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Rally-X (TW) */ + {0xD2EDD329, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_RAM_8K_EXT2, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Road Fighter (TW) */ + + /* games requiring Japanese region setting */ {0x71DEBA5A, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_GG, REGION_JAPAN_NTSC}, /* Pop Breaker */ {0xC9DD4E5F, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* Woody Pop (Super Arkanoid) */ /* games requiring Mark-III hardware (no Memory Control port) */ - {0xBD1CC7DF, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Super Tetris (K) */ - {0x6D309AC5, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Power Boggle Boggle (K) */ + {0xBD1CC7DF, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Super Tetris (KR) */ + {0x6D309AC5, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_SEGA, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Power Boggle Boggle (KR) */ /* games requiring random RAM pattern initialization */ {0x08BF3DE3, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_NONE, SYSTEM_MARKIII, REGION_JAPAN_NTSC}, /* Alibaba and 40 Thieves (KR) */ @@ -761,15 +783,27 @@ static void mapper_reset(void) /* reset internal RAM mapping */ if (system_hw == SYSTEM_SG) { - /* $C000-$FFFF mapped to 2k mirrored RAM */ - for (i = 0x30; i < 0x40; i++) + /* 8k RAM extension adapter (type B) */ + if (cart_rom.mapper == MAPPER_RAM_8K_EXT2) { - z80_readmap[i] = z80_writemap[i] = &work_ram[(i & 0x01) << 10]; + /* $C000-$FFFF mapped to 8k extra RAM (mirrored) */ + for (i = 0x30; i < 0x40; i++) + { + z80_readmap[i] = z80_writemap[i] = &work_ram[(i & 0x07) << 10]; + } + } + else + { + /* $C000-$FFFF mapped to 2k mirrored RAM */ + for (i = 0x30; i < 0x40; i++) + { + z80_readmap[i] = z80_writemap[i] = &work_ram[(i & 0x01) << 10]; + } } } else { - /* $C000-$FFFF mapped to 8k mirrored RAM */ + /* $C000-$FFFF mapped to 8k internal RAM (mirrored) */ for (i = 0x30; i < 0x40; i++) { z80_readmap[i] = z80_writemap[i] = &work_ram[(i & 0x07) << 10]; @@ -792,44 +826,43 @@ static void mapper_reset(void) return; } - /* $0000-$3FFF mapped to ROM (first 16k) by default */ - for (i = 0x00; i < 0x20; i++) + /* reset default $0000-$BFFF mapping */ + if (slot.mapper < MAPPER_SEGA) { - z80_readmap[i] = &slot.rom[i << 10]; - z80_writemap[i] = cart.rom + 0x510000; /* unused area */ - } - - /* reset default $4000-$BFFF mapping (32k) */ - if ((slot.mapper == MAPPER_NONE) || (slot.mapper == MAPPER_TEREBI)) - { - /* $4000-$7FFF mapped to ROM (16k) */ - for (i = 0x00; i < 0x20; i++) + /* $0000-$BFFF mapped to ROM (48k) */ + for (i = 0x00; i < 0x30; i++) { z80_readmap[i] = &slot.rom[i << 10]; z80_writemap[i] = cart.rom + 0x510000; /* unused area */ } - /* enable 16k external RAM by default with 32k ROM (The Castle) */ - if (slot.pages > 0x20) + /* 8k external RAM extension (SG-1000) */ + if (slot.mapper == MAPPER_RAM_8K) { - /* $8000-$BFFF mapped to ROM (16k) */ + /* $8000-$BFFF mapped to cartridge extra RAM (8k mirrored) */ for (i = 0x20; i < 0x30; i++) { - z80_readmap[i] = &slot.rom[i << 10]; - z80_writemap[i] = cart.rom + 0x510000; /* unused area */ + z80_readmap[i] = z80_writemap[i] = &work_ram[0x2000 + ((i & 0x07) << 10)]; } } - else + else if (slot.mapper == MAPPER_RAM_8K_EXT1) { - /* $8000-$BFFF mapped to external RAM (16k) */ - for (i = 0x20; i < 0x30; i++) + /* $2000-$3FFF mapped to RAM extension adapter (8k) */ + for (i = 0x08; i < 0x10; i++) { - z80_readmap[i] = z80_writemap[i] = &sram.sram[(i & 0x0F) << 10]; + z80_readmap[i] = z80_writemap[i] = &work_ram[0x2000 + ((i & 0x07) << 10)]; } } } else { + /* $0000-$3FFF mapped to ROM (first 16k) by default */ + for (i = 0x00; i < 0x10; i++) + { + z80_readmap[i] = &slot.rom[i << 10]; + z80_writemap[i] = cart.rom + 0x510000; /* unused area */ + } + /* ROM paging */ if ((slot.mapper == MAPPER_MSX) || (slot.mapper == MAPPER_KOREA_8K)) { @@ -851,6 +884,9 @@ static void mapper_reset(void) switch (slot.mapper) { case MAPPER_NONE: + case MAPPER_RAM_8K: + case MAPPER_RAM_8K_EXT1: + case MAPPER_RAM_8K_EXT2: z80_readmem = read_mapper_default; z80_writemem = write_mapper_none; break; diff --git a/source/vdp_ctrl.c b/source/vdp_ctrl.c index cfea3f1..ed3ea43 100644 --- a/source/vdp_ctrl.c +++ b/source/vdp_ctrl.c @@ -342,6 +342,9 @@ void vdp_reset(void) if (system_hw == SYSTEM_SG) { + /* 16k address decoding by default (Magical Kid Wiz) */ + vdp_reg_w(1, 0x80, 0); + /* no H-INT on TMS9918 */ vdp_reg_w(10, 0xFF, 0); }