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[Core/MD] added support for new X-in-1 pirate mappers

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This commit is contained in:
ekeeke 2020-07-13 23:58:38 +02:00
parent dcc231f685
commit 1758bbe0e4
1 changed files with 119 additions and 2 deletions
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121
core/cart_hw/md_cart.c
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@ -74,6 +74,9 @@ static void mapper_seganet_w(uint32 address, uint32 data);
static void mapper_32k_w(uint32 data);
static void mapper_64k_w(uint32 data);
static void mapper_64k_multi_w(uint32 address);
static uint32 mapper_128k_multi_r(uint32 address);
static void mapper_256k_multi_w(uint32 address, uint32 data);
static void mapper_wd1601_w(uint32 address, uint32 data);
static uint32 mapper_64k_radica_r(uint32 address);
static uint32 mapper_128k_radica_r(uint32 address);
static void default_time_w(uint32 address, uint32 data);
@ -103,6 +106,11 @@ static const md_entry_t rom_database[] =
/* Tom Clown */
{0x0000,0xc0cd,0x40,0x40,{{0x00,0x00,0x00,0x00},{0xffffff,0xffffff,0xffffff,0xffffff},{0x000000,0x000000,0x000000,0x000000},1,0,NULL,NULL,NULL,mapper_realtec_w}},
/* 1800-in-1 */
{0x3296,0x2370,0x00,0x00,{{0x00,0x00,0x00,0x00},{0xffffff,0xffffff,0xffffff,0xffffff},{0x000000,0x000000,0x000000,0x000000},0,1,mapper_128k_multi_r,m68k_unused_8_w,NULL,NULL}},
/* Golden Mega 250-in-1 */
{0xe43c,0x886f,0x08,0x08,{{0x00,0x00,0x00,0x00},{0xffffff,0xffffff,0xffffff,0xffffff},{0x000000,0x000000,0x000000,0x000000},0,1,NULL,m68k_unused_8_w,NULL,mapper_256k_multi_w}},
/* RADICA (Volume 1) (bad dump ?) */
{0x0000,0x2326,0x00,0x00,{{0x00,0x00,0x00,0x00},{0xffffff,0xffffff,0xffffff,0xffffff},{0x000000,0x000000,0x000000,0x000000},0,1,mapper_64k_radica_r,m68k_unused_8_w,NULL,NULL}},
@ -666,6 +674,20 @@ void md_cart_init(void)
m68k.memory_map[0x00].write16 = mapper_flashkit_w;
zbank_memory_map[0x00].write = mapper_flashkit_w;
}
else if ((cart.romsize = 0x400000) &&
(READ_BYTE(cart.rom, 0x200150) == 'C') &&
(READ_BYTE(cart.rom, 0x200151) == 'A') &&
(READ_BYTE(cart.rom, 0x200152) == 'N') &&
(READ_BYTE(cart.rom, 0x200153) == 'O') &&
(READ_BYTE(cart.rom, 0x200154) == 'N'))
{
/* Canon - Legend of the new Gods (4MB dump) */
cart.hw.time_w = mapper_wd1601_w;
cart.hw.bankshift = 1;
sram.on = 1;
sram.start = 0x200000;
sram.end = 0x201fff;
}
else if ((*(uint16 *)(cart.rom + 0x08) == 0x6000) && (*(uint16 *)(cart.rom + 0x0a) == 0x01f6) && (rominfo.realchecksum == 0xf894))
{
/* Super Mario World 64 (unlicensed) mapper */
@ -1655,7 +1677,102 @@ static void mapper_64k_multi_w(uint32 address)
/* 64 x 64k banks */
for (i=0; i<64; i++)
{
m68k.memory_map[i].base = &cart.rom[((address++) & 0x3f) << 16];
m68k.memory_map[i].base = &cart.rom[((address + i) & 0x3f) << 16];
}
}
/*
Custom ROM Bankswitch used in pirate "1800-in-1" cartridge
*/
static uint32 mapper_128k_multi_r(uint32 address)
{
int i;
/* 16 x 128k banks (2MB ROM) */
/* Bank index (B3 B2 B1 B0) is encoded in address lower byte = {0 X B0 B1 X B2 B3 0} */
/* Note: {0 B0 X B1 X B2 B3 0} also works, see below for the 9 unique values being used for all menu entries
read16 00A13000 (0002FBEE) => 0x000000-0x03ffff (2x128KB)
read16 00A13018 (00FF2056) => 0x040000-0x07ffff (2x128KB)
read16 00A13004 (00FF2120) => 0x080000-0x0bffff (2x128KB)
read16 00A1301C (00FF20A6) => 0x0c0000-0x0fffff (2x128KB)
read16 00A1300A (00FF20BA) => 0x100000-0x13ffff (2x128KB)
read16 00A1301A (00FF20CE) => 0x140000-0x17ffff (2x128KB)
read16 00A1300E (00FF20F4) => 0x180000-0x1bffff (2x128KB)
read16 00A1301E (00FF2136) => 0x1c0000-0x1dffff (1x128KB)
read16 00A1307E (00FF2142) => 0x1e0000-0x1fffff (1x128KB)
*/
int bank = ((address & 0x02) << 2) | (address & 0x04) | ((address & 0x10) >> 3) | ((address & 0x20) >> 5);
/* remap cartridge area (64 x 64k banks) */
address = bank << 1;
for (i=0x00; i<0x40; i++)
{
m68k.memory_map[i].base = &cart.rom[((address + i) & 0x3f) << 16];
}
/* returned value changes the menu title and number of entries in the 'game' list (the number of distinct games does not change though) */
/* 0x00 => 9-in-1 */
/* 0x01 => 190-in-1 */
/* 0x02 => 888-in-1 */
/* 0x03 => 1800-in-1 */
/* real cartridge board has switches to select between the four different menus but here we force the largest menu selection (each other menus being a subset of the next larger menu) */
return 0x03;
}
/*
Custom ROM Bankswitch used in pirate "Golden Mega 250-in-1" cartridge
*/
static void mapper_256k_multi_w(uint32 address, uint32 data)
{
int i;
/* 8 x 256k banks (2MB ROM) */
/* Bank index (B2 B1 B0) is encoded in data lower byte = {B1 B0 X X 0 0 0 B2} */
/* Note: {X B0 B1 B2 0 0 0 X}, {B1 B0 X B2 0 0 0 X} or {X B0 B1 X 0 0 0 B2} also work, see below for the 4 unique values being used for all menu entries
write16 00089000 = 0000 (00FF0006) => 0x000000-0x03ffff (1x256KB)
write16 00089000 = 0040 (00FF0006) => 0x040000-0x07ffff (1x256KB)
write16 00089000 = 00A0 (00FF0006) => 0x080000-0x0fffff (2x256KB)
write16 00089000 = 0011 (00FF0006) => 0x100000-0x1fffff (4x256KB)
*/
int bank = ((data & 0x01) << 2) | ((data & 0xc0) >> 6);
/* remap cartridge area (64 x 64k banks) */
address = bank << 2;
for (i=0x00; i<0x40; i++)
{
m68k.memory_map[i].base = &cart.rom[((address + i) & 0x3f) << 16];
}
}
/*
Custom ROM Bankswitch used in "Canon - Legend of the New Gods"
(uses WD1601 QFPL V1.01 board also used in chinese X-in-1 pirates sold by mindkids)
*/
static void mapper_wd1601_w(uint32 address, uint32 data)
{
int i;
/* !TIME write16 0xA13002 = 0x3002 (00FFFE0C) */
/* The board probably allows up to 256MB Flash ROM remapping but this game only has 4MB ROM chip */
if ((address & 0xfe) == 0x02)
{
/* upper 2MB ROM mapped to $000000-$1fffff */
for (i=0; i<0x20; i++)
{
m68k.memory_map[i].base = &cart.rom[(0x20 + i) << 16];
}
/* backup RAM (8KB) mapped to $2000000-$3fffff */
for (i=0x20; i<0x40; i++)
{
m68k.memory_map[i].base = sram.sram;
m68k.memory_map[i].read8 = sram_read_byte;
m68k.memory_map[i].read16 = sram_read_word;
m68k.memory_map[i].write8 = sram_write_byte;
m68k.memory_map[i].write16 = sram_write_word;
zbank_memory_map[i].read = sram_read_byte;
zbank_memory_map[i].write = sram_write_byte;
}
}
}
@ -1770,7 +1887,7 @@ static uint32 mapper_128k_radica_r(uint32 address)
static void default_time_w(uint32 address, uint32 data)
{
/* enable multi-game cartridge mapper by default */
if (address < 0xa13040)
if (address < 0xa13060)
{
mapper_64k_multi_w(address);
return;