Mercurial > repos > blastem
changeset 2123:50385ae2617b
Attempt to select an appropriate Sega/Mega CD BIOS file based on region and config
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Thu, 10 Mar 2022 22:33:08 -0800 |
| parents | bb478feccca2 |
| children | ad346054ca78 |
| files | segacd.c |
| diffstat | 1 files changed, 23 insertions(+), 1 deletions(-) [+] |
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--- a/segacd.c Thu Mar 10 22:07:45 2022 -0800 +++ b/segacd.c Thu Mar 10 22:33:08 2022 -0800 @@ -5,6 +5,7 @@ #include "util.h" #include "debug.h" #include "gdb_remote.h" +#include "blastem.h" #define SCD_MCLKS 50000000 #define SCD_PERIPH_RESET_CLKS (SCD_MCLKS / 10) @@ -1268,7 +1269,28 @@ segacd_context *cd = calloc(sizeof(segacd_context), 1); uint32_t firmware_size; - cd->rom = (uint16_t *)read_bundled_file("cdbios.bin", &firmware_size); + uint8_t region = force_region; + if (!region) { + char * def_region = tern_find_path_default(config, "system\0default_region\0", (tern_val){.ptrval = "U"}, TVAL_PTR).ptrval; + if (!info->regions || (info->regions & translate_region_char(toupper(*def_region)))) { + region = translate_region_char(toupper(*def_region)); + } else { + region = info->regions; + } + } + const char *key; + if (region & REGION_E) { + key = "system\0scd_bios_eu\0"; + } else if (region & REGION_J) { + key = "system\0scd_bios_jp\0"; + } else { + key = "system\0scd_bios_us\0"; + } + char *bios_path = tern_find_path_default(config, key, (tern_val){.ptrval = "cdbios.bin"}, TVAL_PTR).ptrval; + cd->rom = (uint16_t *)read_bundled_file(bios_path, &firmware_size); + if (!cd->rom) { + fatal_error("Failed to load Sega CD BIOS from %s\n", bios_path); + } uint32_t adjusted_size = nearest_pow2(firmware_size); if (adjusted_size != firmware_size) { cd->rom = realloc(cd->rom, adjusted_size);