From 8ed5a368077388c676a4ef27cca9f3a58d91e484 Mon Sep 17 00:00:00 2001 From: Peter Fors Date: Sat, 3 May 2025 01:00:10 +0200 Subject: cleanup and rewrite of memory_read() --- mappers/mapper_003_0.c | 27 --------------------------- 1 file changed, 27 deletions(-) delete mode 100644 mappers/mapper_003_0.c (limited to 'mappers/mapper_003_0.c') diff --git a/mappers/mapper_003_0.c b/mappers/mapper_003_0.c deleted file mode 100644 index 5ccfb53..0000000 --- a/mappers/mapper_003_0.c +++ /dev/null @@ -1,27 +0,0 @@ - -static uint8_t mapper_003_0_prg_read(struct nes_state *state, uint32_t addr) { - return state->prg_rom[addr & 0x7fff]; -} - -static void mapper_003_0_prg_write(struct nes_state *state, uint32_t addr, uint8_t value) { - struct mapper_003_0 *mapper = (struct mapper_003_0 *)&state->map; - - if(addr >= 0x8000) { - mapper->chr_ptr = state->chr_rom + (value & 3) * 0x2000; - } -} - -static uint8_t mapper_003_0_chr_read(struct nes_state *state, uint32_t addr) { - struct mapper_003_0 *mapper = (struct mapper_003_0 *)&state->map; - return mapper->chr_ptr[addr]; -} - -static void mapper_003_0_init(struct nes_state *state) { - struct mapper_003_0 *mapper = (struct mapper_003_0 *)&state->map; - - mapper->chr_ptr = state->chr_rom; - - state->mapper.prg_read = mapper_003_0_prg_read; - state->mapper.prg_write = mapper_003_0_prg_write; - state->mapper.chr_read = mapper_003_0_chr_read; -} -- cgit v1.2.3