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| author | Peter Fors <peter.fors@mindkiller.com> | 2025-05-08 21:03:43 +0200 |
|---|---|---|
| committer | Peter Fors <peter.fors@mindkiller.com> | 2025-05-08 21:03:43 +0200 |
| commit | e28ad1546509de31b706f0fd300a906e5bc55199 (patch) | |
| tree | 40d708336cf770b8c68302bd32b069951a3df428 /mappers/mapper_003_2.c | |
| parent | da9d961bbc3662064599f4b0b4759a2c641924a2 (diff) | |
new and changed mappers
Diffstat (limited to 'mappers/mapper_003_2.c')
| -rw-r--r-- | mappers/mapper_003_2.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mappers/mapper_003_2.c b/mappers/mapper_003_2.c index e93916a..b780a8f 100644 --- a/mappers/mapper_003_2.c +++ b/mappers/mapper_003_2.c @@ -1,21 +1,26 @@ +__attribute__((section(".mapper_003_2"), hot)) static uint8_t mapper_003_2_prg_read(struct nes_state *state, uint32_t addr) { return state->prg_rom[addr & 0x7fff]; } +__attribute__((section(".mapper_003_2"), hot)) static void mapper_003_2_prg_write(struct nes_state *state, uint32_t addr, uint8_t value) { struct mapper_003_2 *mapper = (struct mapper_003_2 *)&state->map; if(addr >= 0x8000) { + value &= state->prg_rom[addr & 0x7fff]; mapper->chr_ptr = state->chr_rom + (value & 3) * 0x2000; } } +__attribute__((section(".mapper_003_2"), hot)) static uint8_t mapper_003_2_chr_read(struct nes_state *state, uint32_t addr) { struct mapper_003_2 *mapper = (struct mapper_003_2 *)&state->map; return mapper->chr_ptr[addr]; } +__attribute__((section(".mapper_003_2"))) static void mapper_003_2_init(struct nes_state *state) { struct mapper_003_2 *mapper = (struct mapper_003_2 *)&state->map; |
