1 // (c) Copyright 2006-2007 notaz, All rights reserved.
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2 // Free for non-commercial use.
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4 // For commercial use, separate licencing terms must be obtained.
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8 #include <ctype.h> // tolower
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16 #include "lprintf.h"
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18 #include <Pico/PicoInt.h>
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19 #include <Pico/Patch.h>
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20 #include <zlib/zlib.h>
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22 #if defined(__GP2X__)
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23 #include "../gp2x/gp2x.h"
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24 #define SCREEN_WIDTH 320
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25 #define SCREEN_BUFFER gp2x_screen
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26 #elif defined(__GIZ__)
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27 #include "../gizmondo/giz.h"
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28 #define SCREEN_WIDTH 321
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29 #define SCREEN_BUFFER giz_screen // ?
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32 char *PicoConfigFile = "picoconfig.bin";
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33 currentConfig_t currentConfig;
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34 unsigned char *rom_data = NULL;
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37 int config_slot = 0, config_slot_current = 0;
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39 unsigned char *movie_data = NULL;
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40 static int movie_size = 0;
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42 // provided by platform code:
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43 extern char romFileName[];
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44 extern void emu_noticeMsgUpdated(void);
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45 extern void emu_getMainDir(char *dst, int len);
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46 extern void emu_setDefaultConfig(void);
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47 extern void menu_romload_prepare(const char *rom_name);
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48 extern void menu_romload_end(void);
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52 static void strlwr_(char* string)
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54 while ( (*string++ = (char)tolower(*string)) );
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57 static int try_rfn_cut(void)
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62 p = romFileName + strlen(romFileName) - 1;
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63 for (; p > romFileName; p--)
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64 if (*p == '.') break;
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67 if((tmp = fopen(romFileName, "rb"))) {
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74 static void get_ext(char *file, char *ext)
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78 p = file + strlen(file) - 4;
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79 if (p < file) p = file;
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85 char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };
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86 char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210" };
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87 char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };
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89 int emu_findBios(int region, char **bios_file)
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91 static char bios_path[1024];
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96 if (region == 4) { // US
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97 files = biosfiles_us;
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98 count = sizeof(biosfiles_us) / sizeof(char *);
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99 } else if (region == 8) { // EU
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100 files = biosfiles_eu;
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101 count = sizeof(biosfiles_eu) / sizeof(char *);
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102 } else if (region == 1 || region == 2) {
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103 files = biosfiles_jp;
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104 count = sizeof(biosfiles_jp) / sizeof(char *);
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109 for (i = 0; i < count; i++)
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111 emu_getMainDir(bios_path, sizeof(bios_path));
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112 strcat(bios_path, files[i]);
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113 strcat(bios_path, ".bin");
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114 f = fopen(bios_path, "rb");
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117 bios_path[strlen(bios_path) - 4] = 0;
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118 strcat(bios_path, ".zip");
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119 f = fopen(bios_path, "rb");
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124 lprintf("using bios: %s\n", bios_path);
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126 if (bios_file) *bios_file = bios_path;
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129 sprintf(menuErrorMsg, "no %s BIOS files found, read docs",
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130 region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
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131 lprintf("%s\n", menuErrorMsg);
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136 /* checks if romFileName points to valid MegaCD image
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137 * if so, checks for suitable BIOS */
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138 int emu_cdCheck(int *pregion)
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140 unsigned char buf[32];
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142 int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe
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144 cd_f = pm_open(romFileName);
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145 if (!cd_f) return 0; // let the upper level handle this
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147 if (pm_read(buf, 32, cd_f) != 32) {
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152 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1; // Sega CD (ISO)
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153 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2; // Sega CD (BIN)
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159 /* it seems we have a CD image here. Try to detect region now.. */
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160 pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
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161 pm_read(buf, 1, cd_f);
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164 if (buf[0] == 0x64) region = 8; // EU
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165 if (buf[0] == 0xa1) region = 1; // JAP
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167 lprintf("detected %s Sega/Mega CD image with %s region\n",
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168 type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
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170 if (pregion != NULL) *pregion = region;
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175 int emu_ReloadRom(void)
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177 unsigned int rom_size = 0;
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178 char *used_rom_name = romFileName;
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181 int ret, cd_state, cd_region, cfg_loaded = 0;
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183 lprintf("emu_ReloadRom(%s)\n", romFileName);
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185 get_ext(romFileName, ext);
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187 // detect wrong extensions
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188 if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz
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189 sprintf(menuErrorMsg, "Not a ROM selected.");
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195 // check for movie file
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200 if(!strcmp(ext, ".gmv")) {
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201 // check for both gmv and rom
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203 FILE *movie_file = fopen(romFileName, "rb");
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205 sprintf(menuErrorMsg, "Failed to open movie.");
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208 fseek(movie_file, 0, SEEK_END);
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209 movie_size = ftell(movie_file);
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210 fseek(movie_file, 0, SEEK_SET);
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211 if(movie_size < 64+3) {
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212 sprintf(menuErrorMsg, "Invalid GMV file.");
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213 fclose(movie_file);
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216 movie_data = malloc(movie_size);
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217 if(movie_data == NULL) {
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218 sprintf(menuErrorMsg, "low memory.");
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219 fclose(movie_file);
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222 fread(movie_data, 1, movie_size, movie_file);
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223 fclose(movie_file);
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224 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {
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225 sprintf(menuErrorMsg, "Invalid GMV file.");
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228 dummy = try_rfn_cut() || try_rfn_cut();
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230 sprintf(menuErrorMsg, "Could't find a ROM for movie.");
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233 get_ext(romFileName, ext);
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235 else if (!strcmp(ext, ".pat")) {
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237 PicoPatchLoad(romFileName);
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238 dummy = try_rfn_cut() || try_rfn_cut();
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240 sprintf(menuErrorMsg, "Could't find a ROM to patch.");
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243 get_ext(romFileName, ext);
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246 if ((PicoMCD & 1) && Pico_mcd != NULL)
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249 // check for MegaCD image
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250 cd_state = emu_cdCheck(&cd_region);
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253 // valid CD image, check for BIOS..
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255 // we need to have config loaded at this point
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256 ret = emu_ReadConfig(1, 1);
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257 if (!ret) emu_ReadConfig(0, 1);
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260 if (PicoRegionOverride) {
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261 cd_region = PicoRegionOverride;
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262 lprintf("overrided region to %s\n", cd_region != 4 ? (cd_region == 8 ? "EU" : "JAP") : "USA");
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264 if (!emu_findBios(cd_region, &used_rom_name)) {
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270 get_ext(used_rom_name, ext);
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274 if (PicoMCD & 1) Stop_CD();
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278 rom = pm_open(used_rom_name);
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280 sprintf(menuErrorMsg, "Failed to open rom.");
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284 menu_romload_prepare(used_rom_name);
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292 if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {
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293 sprintf(menuErrorMsg, "PicoCartLoad() failed.");
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294 lprintf("%s\n", menuErrorMsg);
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296 menu_romload_end();
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300 menu_romload_end();
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302 // detect wrong files (Pico crashes on very small files), also see if ROM EP is good
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303 if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||
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304 ((*(unsigned char *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {
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305 if (rom_data) free(rom_data);
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307 sprintf(menuErrorMsg, "Not a ROM selected.");
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311 // load config for this ROM (do this before insert to get correct region)
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313 ret = emu_ReadConfig(1, 1);
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314 if (!ret) emu_ReadConfig(0, 1);
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317 lprintf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);
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318 if(PicoCartInsert(rom_data, rom_size)) {
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319 sprintf(menuErrorMsg, "Failed to load ROM.");
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323 Pico.m.frame_count = 0;
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325 // insert CD if it was detected
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326 if (cd_state > 0) {
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327 ret = Insert_CD(romFileName, cd_state == 2);
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329 sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");
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330 lprintf("%s\n", menuErrorMsg);
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335 // emu_ReadConfig() might have messed currentConfig.lastRomFile
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336 strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);
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337 currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;
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340 PicoPatchPrepare();
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344 // additional movie stuff
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346 if(movie_data[0x14] == '6')
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347 PicoOpt |= 0x20; // 6 button pad
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348 else PicoOpt &= ~0x20;
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349 PicoOpt |= 0x10040; // accurate timing, no VDP fifo timing
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350 if(movie_data[0xF] >= 'A') {
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351 if(movie_data[0x16] & 0x80) {
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352 PicoRegionOverride = 8;
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354 PicoRegionOverride = 4;
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357 // TODO: bits 6 & 5
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359 movie_data[0x18+30] = 0;
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360 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);
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364 PicoOpt &= ~0x10000;
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366 strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");
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368 strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");
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371 emu_noticeMsgUpdated();
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373 // load SRAM for this ROM
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374 if(currentConfig.EmuOpt & 1)
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375 emu_SaveLoadGame(1, 1);
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381 static void romfname_ext(char *dst, const char *prefix, const char *ext)
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384 int prefix_len = 0;
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386 // make save filename
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387 for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;
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390 strcpy(dst, prefix);
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391 prefix_len = strlen(prefix);
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393 strncpy(dst + prefix_len, p, 511-prefix_len);
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395 if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;
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396 if (ext) strcat(dst, ext);
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400 int emu_ReadConfig(int game, int no_defaults)
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403 char cfg[512], extbuf[16];
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410 emu_setDefaultConfig();
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412 strncpy(cfg, PicoConfigFile, 511);
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413 if (config_slot != 0)
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415 char *p = strrchr(cfg, '.');
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416 if (p == NULL) p = cfg + strlen(cfg);
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417 sprintf(extbuf, ".%i.pbcfg", config_slot);
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418 strncpy(p, extbuf, 511 - (p - cfg));
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422 if (config_slot != 0)
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423 sprintf(extbuf, ".%i.pbcfg", config_slot);
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424 else strcpy(extbuf, ".pbcfg");
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425 romfname_ext(cfg, "cfg/", extbuf);
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426 f = fopen(cfg, "rb");
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427 if (!f) romfname_ext(cfg, NULL, ".pbcfg");
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431 lprintf("emu_ReadConfig: %s ", cfg);
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432 f = fopen(cfg, "rb");
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434 bread = fread(¤tConfig, 1, sizeof(currentConfig), f);
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437 lprintf(bread > 0 ? "(ok)\n" : "(failed)\n");
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439 PicoOpt = currentConfig.PicoOpt;
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440 PsndRate = currentConfig.PsndRate;
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441 PicoRegionOverride = currentConfig.PicoRegion;
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442 PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;
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443 PicoCDBuffers = currentConfig.PicoCDBuffers;
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444 //scaling_update();
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445 // some sanity checks
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446 if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;
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447 if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;
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448 if (currentConfig.volume < 0 || currentConfig.volume > 99) currentConfig.volume = 50;
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450 // if volume keys are unbound, bind them to volume control
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451 if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {
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452 currentConfig.KeyBinds[23] = 1<<29; // vol up
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453 currentConfig.KeyBinds[22] = 1<<30; // vol down
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456 if (bread > 0) config_slot_current = config_slot;
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457 return (bread > 0); // == sizeof(currentConfig));
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461 int emu_WriteConfig(int game)
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464 char cfg[512], extbuf[16];
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469 strncpy(cfg, PicoConfigFile, 511);
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470 if (config_slot != 0)
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472 char *p = strrchr(cfg, '.');
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473 if (p == NULL) p = cfg + strlen(cfg);
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474 sprintf(extbuf, ".%i.pbcfg", config_slot);
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475 strncpy(p, extbuf, 511 - (p - cfg));
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479 if (config_slot != 0)
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480 sprintf(extbuf, ".%i.pbcfg", config_slot);
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481 else strcpy(extbuf, ".pbcfg");
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482 romfname_ext(cfg, "cfg/", extbuf);
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485 lprintf("emu_WriteConfig: %s ", cfg);
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486 f = fopen(cfg, "wb");
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488 currentConfig.PicoOpt = PicoOpt;
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489 currentConfig.PsndRate = PsndRate;
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490 currentConfig.PicoRegion = PicoRegionOverride;
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491 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;
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492 currentConfig.PicoCDBuffers = PicoCDBuffers;
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493 bwrite = fwrite(¤tConfig, 1, sizeof(currentConfig), f);
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500 lprintf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");
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502 if (bwrite == sizeof(currentConfig)) config_slot_current = config_slot;
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503 return (bwrite == sizeof(currentConfig));
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507 void emu_textOut8(int x, int y, const char *text)
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509 int i,l,len=strlen(text);
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510 unsigned char *screen = (unsigned char *)SCREEN_BUFFER + x + y*SCREEN_WIDTH;
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512 /* always using built-in font */
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513 for (i = 0; i < len; i++)
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517 unsigned char fd = fontdata8x8[((text[i])*8)+l];
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518 if (fd&0x80) screen[l*SCREEN_WIDTH+0]=0xf0;
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519 if (fd&0x40) screen[l*SCREEN_WIDTH+1]=0xf0;
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520 if (fd&0x20) screen[l*SCREEN_WIDTH+2]=0xf0;
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521 if (fd&0x10) screen[l*SCREEN_WIDTH+3]=0xf0;
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522 if (fd&0x08) screen[l*SCREEN_WIDTH+4]=0xf0;
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523 if (fd&0x04) screen[l*SCREEN_WIDTH+5]=0xf0;
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524 if (fd&0x02) screen[l*SCREEN_WIDTH+6]=0xf0;
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525 if (fd&0x01) screen[l*SCREEN_WIDTH+7]=0xf0;
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531 void emu_textOut16(int x, int y, const char *text)
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533 int i,l,len=strlen(text);
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534 unsigned short *screen = (unsigned short *)SCREEN_BUFFER + x + y*SCREEN_WIDTH;
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536 for (i = 0; i < len; i++)
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540 unsigned char fd = fontdata8x8[((text[i])*8)+l];
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541 if(fd&0x80) screen[l*SCREEN_WIDTH+0]=0xffff;
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542 if(fd&0x40) screen[l*SCREEN_WIDTH+1]=0xffff;
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543 if(fd&0x20) screen[l*SCREEN_WIDTH+2]=0xffff;
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544 if(fd&0x10) screen[l*SCREEN_WIDTH+3]=0xffff;
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545 if(fd&0x08) screen[l*SCREEN_WIDTH+4]=0xffff;
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546 if(fd&0x04) screen[l*SCREEN_WIDTH+5]=0xffff;
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547 if(fd&0x02) screen[l*SCREEN_WIDTH+6]=0xffff;
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548 if(fd&0x01) screen[l*SCREEN_WIDTH+7]=0xffff;
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555 void emu_updateMovie(void)
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557 int offs = Pico.m.frame_count*3 + 0x40;
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558 if (offs+3 > movie_size) {
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561 strcpy(noticeMsg, "END OF MOVIE.");
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562 lprintf("END OF MOVIE.\n");
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563 emu_noticeMsgUpdated();
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566 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU
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567 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // A
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568 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // B
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569 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // A
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570 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU
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571 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A
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572 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B
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573 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A
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574 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX
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575 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X
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576 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z
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577 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX
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578 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X
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579 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z
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584 static size_t gzRead2(void *p, size_t _size, size_t _n, void *file)
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586 return gzread(file, p, _n);
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590 static size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)
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592 return gzwrite(file, p, _n);
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595 static int try_ropen_file(const char *fname)
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599 f = fopen(fname, "rb");
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607 char *emu_GetSaveFName(int load, int is_sram, int slot)
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609 static char saveFname[512];
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614 romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");
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616 if (try_ropen_file(saveFname)) return saveFname;
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617 // try in current dir..
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618 romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");
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619 if (try_ropen_file(saveFname)) return saveFname;
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620 return NULL; // give up
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626 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);
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627 strcat(ext, (currentConfig.EmuOpt & 8) ? ".mds.gz" : ".mds");
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629 romfname_ext(saveFname, "mds/", ext);
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631 if (try_ropen_file(saveFname)) return saveFname;
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632 romfname_ext(saveFname, NULL, ext);
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633 if (try_ropen_file(saveFname)) return saveFname;
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634 if (currentConfig.EmuOpt & 8) {
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636 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);
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637 strcat(ext, ".mds");
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639 romfname_ext(saveFname, "mds/", ext);
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640 if (try_ropen_file(saveFname)) return saveFname;
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641 romfname_ext(saveFname, NULL, ext);
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642 if (try_ropen_file(saveFname)) return saveFname;
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651 int emu_checkSaveFile(int slot)
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653 return emu_GetSaveFName(1, 0, slot) ? 1 : 0;
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656 void emu_setSaveStateCbs(int gz)
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659 areaRead = gzRead2;
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660 areaWrite = gzWrite2;
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661 areaEof = (areaeof *) gzeof;
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662 areaSeek = (areaseek *) gzseek;
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663 areaClose = (areaclose *) gzclose;
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665 areaRead = (arearw *) fread;
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666 areaWrite = (arearw *) fwrite;
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667 areaEof = (areaeof *) feof;
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668 areaSeek = (areaseek *) fseek;
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669 areaClose = (areaclose *) fclose;
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673 int emu_SaveLoadGame(int load, int sram)
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678 // make save filename
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679 saveFname = emu_GetSaveFName(load, sram, state_slot);
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680 if (saveFname == NULL) {
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682 strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED ");
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683 emu_noticeMsgUpdated();
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688 lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);
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694 unsigned char *sram_data;
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697 if (PicoOpt&0x8000) { // MCD RAM cart?
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698 sram_size = 0x12000;
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699 sram_data = SRam.data;
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701 memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);
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703 sram_size = 0x2000;
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704 sram_data = Pico_mcd->bram;
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705 truncate = 0; // the .brm may contain RAM cart data after normal brm
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708 sram_size = SRam.end-SRam.start+1;
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709 if(Pico.m.sram_reg & 4) sram_size=0x2000;
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710 sram_data = SRam.data;
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712 if (!sram_data) return 0; // SRam forcefully disabled for this game
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715 sramFile = fopen(saveFname, "rb");
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716 if(!sramFile) return -1;
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717 fread(sram_data, 1, sram_size, sramFile);
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719 if ((PicoMCD&1) && (PicoOpt&0x8000))
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720 memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);
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722 // sram save needs some special processing
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723 // see if we have anything to save
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724 for (; sram_size > 0; sram_size--)
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725 if (sram_data[sram_size-1]) break;
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728 sramFile = fopen(saveFname, truncate ? "wb" : "r+b");
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729 if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry
\r
730 if (!sramFile) return -1;
\r
731 ret = fwrite(sram_data, 1, sram_size, sramFile);
\r
732 ret = (ret != sram_size) ? -1 : 0;
\r
743 void *PmovFile = NULL;
\r
744 if (strcmp(saveFname + strlen(saveFname) - 3, ".gz") == 0)
\r
746 if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {
\r
747 emu_setSaveStateCbs(1);
\r
748 if (!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);
\r
753 if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {
\r
754 emu_setSaveStateCbs(0);
\r
758 ret = PmovState(load ? 6 : 5, PmovFile);
\r
759 areaClose(PmovFile);
\r
761 if (load) Pico.m.dirtyPal=1;
\r
768 strcpy(noticeMsg, load ? "GAME LOADED " : "GAME SAVED ");
\r
771 strcpy(noticeMsg, load ? "LOAD FAILED " : "SAVE FAILED ");
\r
775 emu_noticeMsgUpdated();
\r