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comparison blastem.c @ 948:f87522554d7b

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Allow changing the 68K clock divider in the config file
author Michael Pavone <pavone@retrodev.com>
date Sun, 10 Apr 2016 22:22:36 -0700
parents 4f4f8385da8d
children fec4a59ae5d7
comparison
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947:d29722e3359c 948:f87522554d7b
25 #define BLASTEM_VERSION "0.3.X" 25 #define BLASTEM_VERSION "0.3.X"
26 26
27 #define MCLKS_NTSC 53693175 27 #define MCLKS_NTSC 53693175
28 #define MCLKS_PAL 53203395 28 #define MCLKS_PAL 53203395
29 29
30 #define MCLKS_PER_68K 7 30 uint32_t MCLKS_PER_68K;
31 #define MCLKS_PER_YM MCLKS_PER_68K 31 #define MCLKS_PER_YM 7
32 #define MCLKS_PER_Z80 15 32 #define MCLKS_PER_Z80 15
33 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16) 33 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16)
34 #define DEFAULT_SYNC_INTERVAL MCLKS_LINE 34 #define DEFAULT_SYNC_INTERVAL MCLKS_LINE
35 35
36 //TODO: Figure out the exact value for this 36 //TODO: Figure out the exact value for this
1084 } 1084 }
1085 } 1085 }
1086 uint8_t menu = !loaded; 1086 uint8_t menu = !loaded;
1087 if (!loaded) { 1087 if (!loaded) {
1088 //load menu 1088 //load menu
1089 romfname = tern_find_path(config, "ui\rom\0").ptrval; 1089 romfname = tern_find_path(config, "ui\0rom\0").ptrval;
1090 if (!romfname) { 1090 if (!romfname) {
1091 romfname = "menu.bin"; 1091 romfname = "menu.bin";
1092 } 1092 }
1093 if (romfname[0] == '/') { 1093 if (romfname[0] == '/') {
1094 if (!(rom_size = load_rom(romfname))) { 1094 if (!(rom_size = load_rom(romfname))) {
1106 } 1106 }
1107 } 1107 }
1108 //TODO: load relative to executable or from assets depending on platform 1108 //TODO: load relative to executable or from assets depending on platform
1109 1109
1110 loaded = 1; 1110 loaded = 1;
1111 }
1112 char *m68k_divider = tern_find_path(config, "clocks\0m68k_divider\0").ptrval;
1113 if (!m68k_divider) {
1114 m68k_divider = "7";
1115 }
1116 MCLKS_PER_68K = atoi(m68k_divider);
1117 if (!MCLKS_PER_68K) {
1118 MCLKS_PER_68K = 7;
1111 } 1119 }
1112 ram = malloc(RAM_WORDS * sizeof(uint16_t)); 1120 ram = malloc(RAM_WORDS * sizeof(uint16_t));
1113 memmap_chunk base_map[] = { 1121 memmap_chunk base_map[] = {
1114 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram, 1122 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram,
1115 NULL, NULL, NULL, NULL}, 1123 NULL, NULL, NULL, NULL},