Mercurial > repos > blastem
diff segacd.c @ 1503:a763523dadf4 segacd
Added code for initializing a combined Genesis + Sega CD system when a Sega CD ISO is loaded
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Wed, 13 Dec 2017 09:44:41 -0800 |
| parents | 2564b6ba2e12 |
| children | 95b3a1a8b26c |
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--- a/segacd.c Tue Dec 12 09:44:33 2017 -0800 +++ b/segacd.c Wed Dec 13 09:44:41 2017 -0800 @@ -203,6 +203,7 @@ {0xFF0000, 0xFF7FFF, 0x0000, .read_16 = pcm_read16, .write_16 = pcm_write16, .read_8 = pcm_read8, .write_8 = pcm_write8}, {0xFF8000, 0xFF81FF, 0x0000, .read_16 = sub_gate_read16, .write_16 = sub_gate_write16, .read_8 = sub_gate_read8, .write_8 = sub_gate_write8} }; + memset(info, 0, sizeof(*info)); segacd_context *cd = calloc(sizeof(segacd_context), 1); FILE *f = fopen("cdbios.bin", "rb"); if (!f) { @@ -215,8 +216,12 @@ fatal_error("Failed to read CD firmware"); } cd->rom_mut = malloc(adjusted_size); + byteswap_rom(adjusted_size, cd->rom); memcpy(cd->rom_mut, cd->rom, adjusted_size); - byteswap_rom(firmware_size, cd->rom); + + tern_node *db = get_rom_db(); + *info = configure_rom(db, media->buffer, media->size, media->chain ? media->chain->buffer : NULL, media->chain ? media->chain->size : 0, NULL, 0); + cd->prog_ram = malloc(512*1024); cd->work_ram = malloc(256*1024); cd->pcm_ram = malloc(64*1024); @@ -238,7 +243,7 @@ memmap_chunk *segacd_main_cpu_map(segacd_context *cd, uint32_t *num_chunks) { static memmap_chunk main_cpu_map[] = { - {0x000000, 0x01FFFF, 0x00000, .flags=MMAP_READ}, + {0x000000, 0x01FFFF, 0xFFFFFF, .flags=MMAP_READ}, {0x020000, 0x03FFFF, 0x1FFFF, .flags=MMAP_READ|MMAP_WRITE|MMAP_PTR_IDX|MMAP_FUNC_NULL, .ptr_index = 0},//TODO: support running main CPU code from here {0x040000, 0x05FFFF, 0x1FFFF, .flags=MMAP_READ}, //first ROM alias //TODO: additional ROM/prog RAM aliases