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comparison blastem.c @ 764:bb60259e8edf

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Initial work on ROM database
author Michael Pavone <pavone@retrodev.com>
date Thu, 02 Jul 2015 19:19:06 -0700
parents cee1275f5d08
children dc54387ee1cd
comparison
equal deleted inserted replaced
762:206c449eaa81 764:bb60259e8edf
11 #include "render.h" 11 #include "render.h"
12 #include "blastem.h" 12 #include "blastem.h"
13 #include "gdb_remote.h" 13 #include "gdb_remote.h"
14 #include "gst.h" 14 #include "gst.h"
15 #include "util.h" 15 #include "util.h"
16 #include "romdb.h"
16 #include <stdio.h> 17 #include <stdio.h>
17 #include <stdlib.h> 18 #include <stdlib.h>
18 #include <string.h> 19 #include <string.h>
19 20
20 #define BLASTEM_VERSION "0.2.0" 21 #define BLASTEM_VERSION "0.2.0"
62 63
63 uint16_t * dst = cart; 64 uint16_t * dst = cart;
64 while (filesize > 0) { 65 while (filesize > 0) {
65 fread(block, 1, SMD_BLOCK_SIZE, f); 66 fread(block, 1, SMD_BLOCK_SIZE, f);
66 for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) { 67 for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) {
67 *(dst++) = *high << 8 | *low; 68 *(dst++) = *low << 8 | *high;
68 } 69 }
69 filesize -= SMD_BLOCK_SIZE; 70 filesize -= SMD_BLOCK_SIZE;
70 } 71 }
71 return 1; 72 return 1;
73 }
74
75 void byteswap_rom()
76 {
77 for(unsigned short * cur = cart; cur - cart < CARTRIDGE_WORDS; ++cur)
78 {
79 *cur = (*cur >> 8) | (*cur << 8);
80 }
72 } 81 }
73 82
74 int load_rom(char * filename) 83 int load_rom(char * filename)
75 { 84 {
76 uint8_t header[10]; 85 uint8_t header[10];
101 return load_smd_rom(filesize, f); 110 return load_smd_rom(filesize, f);
102 } 111 }
103 } 112 }
104 fread(cart, 2, filesize/2, f); 113 fread(cart, 2, filesize/2, f);
105 fclose(f); 114 fclose(f);
106 for(unsigned short * cur = cart; cur - cart < (filesize/2); ++cur)
107 {
108 *cur = (*cur >> 8) | (*cur << 8);
109 }
110 //TODO: Mirror ROM
111 return 1; 115 return 1;
112 } 116 }
113 117
114 uint16_t read_dma_value(uint32_t address) 118 uint16_t read_dma_value(uint32_t address)
115 { 119 {
1063 } 1067 }
1064 m68k_reset(context); 1068 m68k_reset(context);
1065 } 1069 }
1066 } 1070 }
1067 1071
1068 char title[64]; 1072 char *title;
1069 1073
1070 #define TITLE_START 0x150 1074 #define TITLE_START 0x150
1071 #define TITLE_END (TITLE_START+48) 1075 #define TITLE_END (TITLE_START+48)
1072 1076
1073 void update_title() 1077 void update_title(char *rom_name)
1074 { 1078 {
1075 uint16_t *last = cart + TITLE_END/2 - 1; 1079 if (title) {
1076 while(last > cart + TITLE_START/2 && *last == 0x2020) 1080 free(title);
1077 { 1081 title = NULL;
1078 last--; 1082 }
1079 } 1083 title = alloc_concat(rom_name, " - BlastEm");
1080 uint16_t *start = cart + TITLE_START/2;
1081 char *cur = title;
1082 char last_char = ' ';
1083 for (; start != last; start++)
1084 {
1085 if ((last_char != ' ' || (*start >> 8) != ' ') && (*start >> 8) < 0x80) {
1086 *(cur++) = *start >> 8;
1087 last_char = *start >> 8;
1088 }
1089 if (last_char != ' ' || (*start & 0xFF) != ' ' && (*start & 0xFF) < 0x80) {
1090 *(cur++) = *start;
1091 last_char = *start & 0xFF;
1092 }
1093 }
1094 *(cur++) = *start >> 8;
1095 if ((*start & 0xFF) != ' ') {
1096 *(cur++) = *start;
1097 }
1098 strcpy(cur, " - BlastEm");
1099 } 1084 }
1100 1085
1101 #define REGION_START 0x1F0 1086 #define REGION_START 0x1F0
1102 1087
1103 int detect_specific_region(char region) 1088 int detect_specific_region(char region)
1269 } 1254 }
1270 if (!loaded) { 1255 if (!loaded) {
1271 fputs("You must specify a ROM filename!\n", stderr); 1256 fputs("You must specify a ROM filename!\n", stderr);
1272 return 1; 1257 return 1;
1273 } 1258 }
1259 tern_node *rom_db = load_rom_db();
1260 rom_info info = configure_rom(rom_db, cart);
1261 byteswap_rom();
1274 if (force_version) { 1262 if (force_version) {
1275 version_reg = force_version; 1263 version_reg = force_version;
1276 } else { 1264 } else {
1277 detect_region(); 1265 detect_region();
1278 } 1266 }
1279 update_title(); 1267 update_title(info.name);
1280 int def_width = 0; 1268 int def_width = 0;
1281 char *config_width = tern_find_ptr(config, "videowidth"); 1269 char *config_width = tern_find_ptr(config, "videowidth");
1282 if (config_width) { 1270 if (config_width) {
1283 def_width = atoi(config_width); 1271 def_width = atoi(config_width);
1284 } 1272 }