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.improved emulation of 32k bankswitch hardware used by a few unlicensed games

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.added support for a few recently dumped unlicensed games
This commit is contained in:
ekeeke31 2011-08-15 15:29:28 +00:00
parent 177779d0bc
commit 9b0d4d6a9c
1 changed files with 51 additions and 11 deletions
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62
source/cart_hw/md_cart.c
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@ -64,6 +64,7 @@ T_CART cart;
/* Function prototypes */
static void mapper_sega_w(uint32 data);
static void mapper_ssf2_w(uint32 address, uint32 data);
static void mapper_wukong_w(uint32 address, uint32 data);
static void mapper_realtec_w(uint32 address, uint32 data);
static void mapper_seganet_w(uint32 address, uint32 data);
static void mapper_32k_w(uint32 data);
@ -104,7 +105,7 @@ static const T_CART_ENTRY rom_database[CART_CNT] =
/* Top Fighter */
{0x4eb9,0x5d8b,0x60,0x7f,{{0x00,0x00,0x00,0x00},{0xf00007,0xf00007,0xf00007,0xffffff},{0x600001,0x600003,0x600005,0x000000},0,1,NULL,NULL,default_regs_r,custom_regs_w}},
/* Soul Edge VS Samurai Spirits */
{0x00ff,0x5d34,0x60,0x7f,{{0x00,0x00,0x00,0x00},{0xf00007,0xf00007,0xf00007,0xf00007},{0x600001,0x600003,0x600005,0x600007},0,1,NULL,NULL,default_regs_r,custom_regs_w}},
{0x00ff,0x5d34,0x60,0x7f,{{0x00,0x00,0x00,0x00},{0xf00007,0xf00007,0xf00007,0xffffff},{0x600001,0x600003,0x600005,0x000000},0,1,NULL,NULL,default_regs_r,custom_regs_w}},
/* Mulan */
{0x0404,0x1b40,0x60,0x7f,{{0x00,0x00,0x00,0x00},{0xf00007,0xf00007,0xf00007,0xffffff},{0x600001,0x600003,0x600005,0x000000},0,1,NULL,NULL,default_regs_r,custom_regs_w}},
/* Pocket Monsters II */
@ -190,7 +191,6 @@ static const T_CART_ENTRY rom_database[CART_CNT] =
Cart Hardware initialization
*************************************************************/
/* cart hardware detection */
void md_cart_init(void)
{
int i;
@ -665,6 +665,23 @@ void md_cart_init(void)
cart.hw.time_w = sega_channel_w;
}
/* Legend of Wukong mapper */
if (strstr(rominfo.international,"LEGEND OF WUKONG") != NULL)
{
/* 128K ROM Bankswitch */
m68k_memory_map[0].write8 = mapper_wukong_w;
zbank_memory_map[0].write = mapper_wukong_w;
/* 8K SRAM */
m68k_memory_map[0x3C].base = sram.sram;
m68k_memory_map[0x3C].read8 = NULL;
m68k_memory_map[0x3C].read16 = NULL;
m68k_memory_map[0x3C].write8 = NULL;
m68k_memory_map[0x3C].write16 = NULL;
zbank_memory_map[0x3C].read = NULL;
zbank_memory_map[0x3C].write = NULL;
}
/* default write handler for !TIME range ($A130xx)*/
if (!cart.hw.time_w)
{
@ -878,6 +895,30 @@ static void mapper_ssf2_w(uint32 address, uint32 data)
}
}
/*
Legend of Wukong ROM Bankswitch
*/
static void mapper_wukong_w(uint32 address, uint32 data)
{
int i;
if (data & 0x80)
{
/* $200000-$3BFFFF mapped to $000000-$1BFFFF */
for (i=0x20; i<0x3C; i++)
{
m68k_memory_map[i].base = cart.rom + (((i&0x1F)<<16) & cart.mask);
}
}
else
{
/* $200000-$3BFFFF mapped to $200000-$3BFFFF */
for (i=0x20; i<0x3C; i++)
{
m68k_memory_map[i].base = cart.rom + ((i<<16) & cart.mask);
}
}
}
/*
Realtec ROM Bankswitch (Earth Defend, Balloon Boy & Funny World, Whac-A-Critter)
(Note: register usage is inverted in TascoDlx documentation)
@ -951,7 +992,7 @@ static void mapper_seganet_w(uint32 address, uint32 data)
}
/*
Custom ROM Bankswitch used in Top Fighter, Mulan, Pocket Monsters II, Lion King 3, Super King Kong 99, Pokemon Stadium
Custom ROM Bankswitch used in Soul Edge VS Samurai Spirits, Top Fighter, Mulan, Pocket Monsters II, Lion King 3, Super King Kong 99, Pokemon Stadium
*/
static void mapper_32k_w(uint32 data)
{
@ -960,15 +1001,14 @@ static void mapper_32k_w(uint32 data)
/* 64 x 32k banks */
if (data)
{
/* unverified (Top Fighter writes $2A instead $2E) */
if (data >> 2) data |= 4;
/* bank is mapped at $000000-$0FFFFF */
for (i=0; i<16; i++)
for (i=0; i<0x10; i++)
{
memcpy(cart.rom + 0x900000 + (i<<16), cart.rom + ((data & 0x3f) << 15), 0x8000);
memcpy(cart.rom + 0x908000 + (i<<16), cart.rom + ((data & 0x3f) << 15), 0x8000);
m68k_memory_map[i].base = cart.rom + 0x900000 + (i<<16);
/* Remap to unused ROM area */
m68k_memory_map[i].base = &cart.rom[0x400000 + (i << 16)];
/* address = address OR (value << 15) */
memcpy(m68k_memory_map[i].base, cart.rom + ((i << 16) | (data & 0x3f) << 15), 0x8000);
memcpy(m68k_memory_map[i].base + 0x8000, cart.rom + ((i << 16) | ((data | 1) & 0x3f) << 15), 0x8000);
}
}
else