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core, add some superfighter mappers

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This commit is contained in:
kub 2021-09-21 21:52:04 +02:00
parent 0944973525
commit 60392bf469
5 changed files with 158 additions and 1 deletions
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133
pico/carthw/carthw.c
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@ -483,6 +483,139 @@ void carthw_pier_startup(void)
carthw_chunks = carthw_pier_state;
}
/* superfighter mappers */
unsigned int carthw_sf00x_reg;
static carthw_state_chunk carthw_sf00x_state[] =
{
{ CHUNK_CARTHW, sizeof(carthw_sf00x_reg), &carthw_sf00x_reg },
{ 0, 0, NULL }
};
// hack to remap SRAM from 0x400000 to 0x3c0000 (there are 2 versions of sf001)
u32 carthw_sf001_read8_sram(u32 a)
{
return m68k_read8((a & 0xffff) + 0x400000);
}
u32 carthw_sf001_read16_sram(u32 a)
{
return m68k_read16((a & 0xffff) + 0x400000);
}
void carthw_sf001_write8_sram(u32 a, u32 d)
{
m68k_write8((a & 0xffff) + 0x400000, d);
}
void carthw_sf001_write16_sram(u32 a, u32 d)
{
m68k_write16((a & 0xffff) + 0x400000, d);
}
void carthw_sf001_write8(u32 a, u32 d)
{
if ((a & 0xf00) != 0x0e00)
return;
if (d & 0x80) {
// bank 0xe at addr 0x000000
cpu68k_map_set(m68k_read8_map, 0x000000, 0x040000-1, Pico.rom+0x380000, 0);
cpu68k_map_set(m68k_read16_map, 0x000000, 0x040000-1, Pico.rom+0x380000, 0);
// SRAM at 0x3c0000; hack to map SRAM from old to new location
cpu68k_map_set(m68k_read8_map, 0x3c0000, 0x400000-1, carthw_sf001_read8_sram, 1);
cpu68k_map_set(m68k_read16_map, 0x3c0000, 0x400000-1, carthw_sf001_read16_sram, 1);
cpu68k_map_set(m68k_write8_map, 0x3c0000, 0x400000-1, carthw_sf001_write8_sram, 1);
cpu68k_map_set(m68k_write16_map,0x3c0000, 0x400000-1, carthw_sf001_write16_sram, 1);
} else {
// bank 0x0 at addr 0x000000
cpu68k_map_set(m68k_read8_map, 0x000000, 0x040000-1, Pico.rom, 0);
cpu68k_map_set(m68k_read16_map, 0x000000, 0x040000-1, Pico.rom, 0);
// SRAM off, bank 0xf at addr 0x3c0000
cpu68k_map_set(m68k_read8_map, 0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
cpu68k_map_set(m68k_read16_map, 0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
cpu68k_map_set(m68k_write8_map, 0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
cpu68k_map_set(m68k_write16_map,0x3c0000, 0x400000-1, Pico.rom+0x3c0000, 0);
}
carthw_sf00x_reg = d;
}
void carthw_sf001_write16(u32 a, u32 d)
{
carthw_sf001_write8(a + 1, d);
}
static void carthw_sf001_mem_setup(void)
{
cpu68k_map_set(m68k_write8_map, 0x000000, 0x00ffff, carthw_sf001_write8, 1);
cpu68k_map_set(m68k_write16_map, 0x000000, 0x00ffff, carthw_sf001_write16, 1);
}
static void carthw_sf001_reset(void)
{
carthw_sf001_write8(0x0e01, 0);
}
static void carthw_sf001_statef(void)
{
carthw_sf001_write8(0x0e01, carthw_sf00x_reg);
}
void carthw_sf001_startup(void)
{
PicoCartMemSetup = carthw_sf001_mem_setup;
PicoResetHook = carthw_sf001_reset;
PicoLoadStateHook = carthw_sf001_statef;
carthw_chunks = carthw_sf00x_state;
}
void carthw_sf002_write8(u32 a, u32 d)
{
if ((a & 0xf00) != 0x0e00)
return;
if (d & 0x80) {
// bank 0x00-0x0e on addr 0x20000
cpu68k_map_set(m68k_read8_map, 0x200000, 0x3c0000-1, Pico.rom, 0);
cpu68k_map_set(m68k_read16_map, 0x200000, 0x3c0000-1, Pico.rom, 0);
} else {
// bank 0x10-0x1e on addr 0x20000
cpu68k_map_set(m68k_read8_map, 0x200000, 0x3c0000-1, Pico.rom+0x200000, 0);
cpu68k_map_set(m68k_read16_map, 0x200000, 0x3c0000-1, Pico.rom+0x200000, 0);
}
carthw_sf00x_reg = d;
}
void carthw_sf002_write16(u32 a, u32 d)
{
carthw_sf002_write8(a + 1, d);
}
static void carthw_sf002_mem_setup(void)
{
cpu68k_map_set(m68k_write8_map, 0x000000, 0x00ffff, carthw_sf002_write8, 1);
cpu68k_map_set(m68k_write16_map, 0x000000, 0x00ffff, carthw_sf002_write16, 1);
}
static void carthw_sf002_reset(void)
{
carthw_sf002_write8(0x0e01, 0);
}
static void carthw_sf002_statef(void)
{
carthw_sf002_write8(0x0e01, carthw_sf00x_reg);
}
void carthw_sf002_startup(void)
{
PicoCartMemSetup = carthw_sf002_mem_setup;
PicoResetHook = carthw_sf002_reset;
PicoLoadStateHook = carthw_sf002_statef;
carthw_chunks = carthw_sf00x_state;
}
/* Simple unlicensed ROM protection emulation */
static struct {
u32 addr;