mirror of
https://github.com/0ldsk00l/smsplus.git
synced 2025-04-02 10:32:07 -04:00
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/*
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loadrom.c --
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File loading and management.
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*/
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#include "shared.h"
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char game_name[PATH_MAX];
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typedef struct {
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uint32 crc;
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int mapper;
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int display;
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int territory;
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char *name;
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} rominfo_t;
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rominfo_t game_list[] = {
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{0x29822980, MAPPER_CODIES, DISPLAY_PAL, TERRITORY_EXPORT, "Cosmic Spacehead"},
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{0xB9664AE1, MAPPER_CODIES, DISPLAY_PAL, TERRITORY_EXPORT, "Fantastic Dizzy"},
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{0xA577CE46, MAPPER_CODIES, DISPLAY_PAL, TERRITORY_EXPORT, "Micro Machines"},
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{0x8813514B, MAPPER_CODIES, DISPLAY_PAL, TERRITORY_EXPORT, "Excellent Dizzy (Proto)"},
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{0xAA140C9C, MAPPER_CODIES, DISPLAY_PAL, TERRITORY_EXPORT, "Excellent Dizzy (Proto - GG)"},
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{-1 , -1 , -1, -1, NULL},
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};
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int load_rom(char *filename)
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{
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int i;
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int size;
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if(cart.rom)
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{
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free(cart.rom);
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cart.rom = NULL;
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}
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if(check_zip(filename))
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{
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char name[PATH_MAX];
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cart.rom = loadFromZipByName(filename, name, &size);
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if(!cart.rom) return 0;
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strcpy(game_name, name);
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}
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else
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{
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FILE *fd = NULL;
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fd = fopen(filename, "rb");
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if(!fd) return 0;
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/* Seek to end of file, and get size */
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fseek(fd, 0, SEEK_END);
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size = ftell(fd);
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fseek(fd, 0, SEEK_SET);
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cart.rom = malloc(size);
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if(!cart.rom) return 0;
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fread(cart.rom, size, 1, fd);
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fclose(fd);
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}
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/* Don't load games smaller than 16K */
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if(size < 0x4000) return 0;
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/* Take care of image header, if present */
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if((size / 512) & 1)
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{
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size -= 512;
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memmove(cart.rom, cart.rom + 512, size);
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}
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cart.pages = (size / 0x4000);
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cart.crc = crc32(0L, cart.rom, size);
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/* Assign default settings (US NTSC machine) */
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cart.mapper = MAPPER_SEGA;
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sms.display = DISPLAY_NTSC;
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sms.territory = TERRITORY_EXPORT;
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/* Look up mapper in game list */
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for(i = 0; game_list[i].name != NULL; i++)
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{
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if(cart.crc == game_list[i].crc)
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{
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cart.mapper = game_list[i].mapper;
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sms.display = game_list[i].display;
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sms.territory = game_list[i].territory;
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}
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}
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/* Figure out game image type */
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if(stricmp(strrchr(game_name, '.'), ".gg") == 0)
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sms.console = CONSOLE_GG;
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else
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sms.console = CONSOLE_SMS;
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system_assign_device(PORT_A, DEVICE_PAD2B);
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system_assign_device(PORT_B, DEVICE_PAD2B);
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return 1;
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}
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