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[Core/SG-1000] fixed SG-1000 internal RAM size (1KB instead of 2KB)

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This commit is contained in:
EkeEke 2013-12-27 19:34:47 +01:00
parent 2fd2f82537
commit 9957651e8e
1 changed files with 36 additions and 23 deletions
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59
core/cart_hw/sms_cart.c
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@ -44,6 +44,7 @@
#define MAPPER_TEREBI (0x01)
#define MAPPER_RAM_8K_EXT1 (0x02)
#define MAPPER_RAM_8K_EXT2 (0x03)
#define MAPPER_OMV (0x04)
#define MAPPER_SEGA (0x10)
#define MAPPER_SEGA_X (0x11)
#define MAPPER_93C46 (0x12)
@ -55,7 +56,7 @@
#define MAPPER_MSX (0x21)
#define MAPPER_MSX_NEMESIS (0x22)
#define GAME_DATABASE_CNT (211)
#define GAME_DATABASE_CNT (214)
typedef struct
{
@ -95,7 +96,7 @@ static const rominfo_t game_list[GAME_DATABASE_CNT] =
{0x445525E2, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* Penguin Adventure (KR) */
{0x83F0EEDE, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* Street Master (KR) */
{0xA05258F5, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* Won-Si-In (KR) */
{0x06965ED9, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* F-1 Spirit - The way to Formula-1 (KR) */
{0x06965ED9, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* F-1 Spirit - The way to Formula-1 (KR) */
{0x77EFE84A, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* Cyborg Z (KR) */
{0xF89AF3CC, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* Knightmare II - The Maze of Galious (KR) */
{0x9195C34C, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_MSX, SYSTEM_SMS, REGION_JAPAN_NTSC}, /* Super Boy 3 (KR) */
@ -153,6 +154,11 @@ static const rominfo_t game_list[GAME_DATABASE_CNT] =
{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 2K internal RAM (Othello Multivision hardware) */
{0x7F7F009D, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_OMV, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Circus Charlie (KR) */
{0x77DB4704, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_OMV, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Q*Bert */
{0xC5A67B95, 0, 0, SYSTEM_MS_GAMEPAD, MAPPER_OMV, SYSTEM_SG, REGION_JAPAN_NTSC}, /* Othello Multivision BIOS */
/* 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) */
@ -727,18 +733,30 @@ static void mapper_reset(void)
z80_readmap[i] = z80_writemap[i] = &work_ram[(i & 0x07) << 10];
}
}
else
/* Othello Multivision hardware */
else if (cart_rom.mapper == MAPPER_OMV)
{
/* $C000-$FFFF mapped to 2k mirrored RAM */
/* $C000-$FFFF mapped to 2k internal RAM (mirrored) */
for (i = 0x30; i < 0x40; i++)
{
z80_readmap[i] = z80_writemap[i] = &work_ram[(i & 0x01) << 10];
}
}
/* default SG-1000 hardware */
else
{
/* $C000-$FFFF mapped to 1k internal RAM (mirrored) */
for (i = 0x30; i < 0x40; i++)
{
z80_readmap[i] = z80_writemap[i] = &work_ram[0];
}
}
}
else
{
/* $C000-$FFFF mapped to 8k internal RAM (mirrored) */
/* Master System / Game Gear hardware: $C000-$FFFF mapped to 8k internal RAM (mirrored) */
for (i = 0x30; i < 0x40; i++)
{
z80_readmap[i] = z80_writemap[i] = &work_ram[(i & 0x07) << 10];
@ -761,17 +779,17 @@ static void mapper_reset(void)
return;
}
/* reset default $0000-$BFFF mapping */
/* by default, $0000-$BFFF is mapped to ROM (first 48k) */
for (i = 0x00; i < 0x30; i++)
{
z80_readmap[i] = &slot.rom[i << 10];
z80_writemap[i] = cart.rom + 0x510000; /* unused area */
}
/* reset cartridge hardware mapping */
if (slot.mapper < MAPPER_SEGA)
{
/* $0000-$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 */
}
/* cartridge extra RAM enabled by default with 32K ROM */
/* cartridge extra RAM enabled by default with 32K ROM (The Castle) */
if (slot.pages <= 0x20)
{
/* $8000-$BFFF mapped to 8k external RAM (mirrored) */
@ -793,22 +811,16 @@ static void mapper_reset(void)
}
else
{
/* $0000-$BFFF mapped to ROM by default */
for (i = 0x00; i < 0x30; i++)
{
z80_readmap[i] = &slot.rom[i << 10];
z80_writemap[i] = cart.rom + 0x510000; /* unused area */
}
/* reset default ROM paging */
/* reset ROM paging hardware */
if (slot.mapper & MAPPER_KOREA_8K)
{
/* 8k pages */
mapper_8k_w(0,slot.fcr[0]);
mapper_8k_w(1,slot.fcr[1]);
mapper_8k_w(2,slot.fcr[2]);
mapper_8k_w(3,slot.fcr[3]);
/* Nemesis special case */
/* "Nemesis" mapper specific */
if (slot.mapper == MAPPER_MSX_NEMESIS)
{
/* first 8k page is mapped to last 8k ROM bank */
@ -820,6 +832,7 @@ static void mapper_reset(void)
}
else
{
/* 16k pages */
mapper_16k_w(0,slot.fcr[0]);
mapper_16k_w(1,slot.fcr[1]);
mapper_16k_w(2,slot.fcr[2]);