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sms, fix mappers (save/load for sega, korea, 8kbram)

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This commit is contained in:
kub 2022-05-09 21:45:07 +02:00
parent 46cbe781eb
commit 7c16d1357b
1 changed files with 21 additions and 14 deletions
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35
pico/sms.c
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@ -344,7 +344,7 @@ static void write_bank_codem(unsigned short a, unsigned char d)
// MSX mapper. 4 selectable 8KB banks at the top
static void write_bank_msx(unsigned short a, unsigned char d)
{
if (a > 0x0003) return;
if (a > 0x0003 || !(Pico.m.hardware & PMS_HW_JAP)) return;
// don't detect linear mapping to avoid confusing with Codemasters
if (Pico.ms.mapper != PMS_MAP_MSX && (Pico.ms.mapper || (a|d) == 0 || d >= 0x80)) return;
elprintf(EL_Z80BNK, "bank msx %04x %02x @ %04x", a, d, z80_pc());
@ -462,7 +462,7 @@ static void write_bank_x8k(unsigned short a, unsigned char d)
if (Pico.ms.mapper != PMS_MAP_8KBRAM && Pico.ms.mapper) return;
elprintf(EL_Z80BNK, "bank x8k %04x %02x @ %04x", a, d, z80_pc());
((unsigned char *)PicoMem.vram)[(a&0x1fff)+0x8000] = d;
((unsigned char *)(PicoMem.vram+0x4000))[a&0x1fff] = d;
Pico.ms.mapper = PMS_MAP_8KBRAM;
a &= 0xe000;
@ -631,6 +631,8 @@ void PicoPowerMS(void)
void PicoMemSetupMS(void)
{
u8 mapper = Pico.ms.mapper;
z80_map_set(z80_read_map, 0x0000, 0xbfff, Pico.rom, 0);
z80_map_set(z80_read_map, 0xc000, 0xdfff, PicoMem.zram, 0);
z80_map_set(z80_read_map, 0xe000, 0xffff, PicoMem.zram, 0);
@ -640,7 +642,7 @@ void PicoMemSetupMS(void)
z80_map_set(z80_write_map, 0xe000, 0xffff, xwrite, 1);
// Nemesis mapper maps last 8KB rom bank #15 to adress 0
if (Pico.ms.mapper == PMS_MAP_NEMESIS && Pico.romsize > 0x1e000)
if (mapper == PMS_MAP_NEMESIS && Pico.romsize > 0x1e000)
z80_map_set(z80_read_map, 0x0000, 0x1fff, Pico.rom + 0x1e000, 0);
#ifdef _USE_DRZ80
drZ80.z80_in = z80_sms_in;
@ -652,12 +654,14 @@ void PicoMemSetupMS(void)
#endif
// memory mapper setup, linear mapping of 1st 48KB
u8 mapper = Pico.ms.mapper;
memset(Pico.ms.carthw, 0, sizeof(Pico.ms.carthw));
if (mapper == PMS_MAP_MSX || mapper == PMS_MAP_NEMESIS) {
xwrite(0x0000, 4);
xwrite(0x0001, 5);
xwrite(0x0002, 2);
xwrite(0x0003, 3);
} else if (mapper == PMS_MAP_KOREA) {
xwrite(0xa000, 2);
} else if (mapper == PMS_MAP_N32K) {
xwrite(0xffff, 0);
} else if (mapper == PMS_MAP_N16K) {
@ -671,47 +675,50 @@ void PicoMemSetupMS(void)
xwrite(0x0000, 0);
xwrite(0x4000, 1);
xwrite(0x8000, 2);
} else if (mapper) {
} else if (mapper != PMS_MAP_8KBRAM) {
// pre-initialize Sega mapper to linear mapping (else state load may fail)
xwrite(0xfffc, 0);
xwrite(0xfffd, 0);
xwrite(0xfffe, 1);
xwrite(0xffff, 2);
Pico.ms.mapper = mapper;
}
}
void PicoStateLoadedMS(void)
{
u8 mapper = Pico.ms.mapper;
if (Pico.ms.mapper == PMS_MAP_8KBRAM) {
if (mapper == PMS_MAP_8KBRAM) {
u16 a = Pico.ms.carthw[0] << 12;
xwrite(a+0x888, *((unsigned char *)PicoMem.vram+0x8888));
} else if (Pico.ms.mapper == PMS_MAP_MSX || Pico.ms.mapper == PMS_MAP_NEMESIS) {
xwrite(a, *(unsigned char *)(PicoMem.vram+0x4000));
} else if (mapper == PMS_MAP_MSX || mapper == PMS_MAP_NEMESIS) {
xwrite(0x0000, Pico.ms.carthw[0]);
xwrite(0x0001, Pico.ms.carthw[1]);
xwrite(0x0002, Pico.ms.carthw[2]);
xwrite(0x0003, Pico.ms.carthw[3]);
} else if (Pico.ms.mapper == PMS_MAP_N32K) {
} else if (mapper == PMS_MAP_KOREA) {
xwrite(0xa000, Pico.ms.carthw[0x0f]);
} else if (mapper == PMS_MAP_N32K) {
xwrite(0xffff, Pico.ms.carthw[0x0f]);
} else if (Pico.ms.mapper == PMS_MAP_N16K) {
} else if (mapper == PMS_MAP_N16K) {
xwrite(0x3ffe, Pico.ms.carthw[0]);
xwrite(0x7fff, Pico.ms.carthw[1]);
xwrite(0xbfff, Pico.ms.carthw[2]);
} else if (Pico.ms.mapper == PMS_MAP_JANGGUN) {
} else if (mapper == PMS_MAP_JANGGUN) {
xwrite(0x4000, Pico.ms.carthw[2]);
xwrite(0x6000, Pico.ms.carthw[3]);
xwrite(0x8000, Pico.ms.carthw[4]);
xwrite(0xa000, Pico.ms.carthw[5]);
} else if (Pico.ms.mapper == PMS_MAP_CODEM) {
} else if (mapper == PMS_MAP_CODEM) {
xwrite(0x0000, Pico.ms.carthw[0]);
xwrite(0x4000, Pico.ms.carthw[1]);
xwrite(0x8000, Pico.ms.carthw[2]);
} else {
} else if (mapper == PMS_MAP_SEGA) {
xwrite(0xfffc, Pico.ms.carthw[0x0c]);
xwrite(0xfffd, Pico.ms.carthw[0x0d]);
xwrite(0xfffe, Pico.ms.carthw[0x0e]);
xwrite(0xffff, Pico.ms.carthw[0x0f]);
}
Pico.ms.mapper = mapper;
}
void PicoFrameMS(void)