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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31 #include "../psp/psp.h"
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32 #define SCREEN_WIDTH 512
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33 #define SCREEN_BUFFER psp_screen
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36 char *PicoConfigFile = "picoconfig.bin";
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37 currentConfig_t currentConfig;
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41 int config_slot = 0, config_slot_current = 0;
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43 unsigned char *movie_data = NULL;
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44 static int movie_size = 0;
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46 // provided by platform code:
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47 extern char romFileName[];
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48 extern void emu_noticeMsgUpdated(void);
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49 extern void emu_getMainDir(char *dst, int len);
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50 extern void emu_setDefaultConfig(void);
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51 extern void menu_romload_prepare(const char *rom_name);
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52 extern void menu_romload_end(void);
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56 static void strlwr_(char* string)
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58 while ( (*string++ = (char)tolower(*string)) );
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61 static int try_rfn_cut(void)
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66 p = romFileName + strlen(romFileName) - 1;
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67 for (; p > romFileName; p--)
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68 if (*p == '.') break;
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71 if((tmp = fopen(romFileName, "rb"))) {
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78 static void get_ext(char *file, char *ext)
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82 p = file + strlen(file) - 4;
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83 if (p < file) p = file;
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89 char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };
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90 char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210" };
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91 char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };
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93 int emu_findBios(int region, char **bios_file)
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95 static char bios_path[1024];
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100 if (region == 4) { // US
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101 files = biosfiles_us;
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102 count = sizeof(biosfiles_us) / sizeof(char *);
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103 } else if (region == 8) { // EU
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104 files = biosfiles_eu;
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105 count = sizeof(biosfiles_eu) / sizeof(char *);
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106 } else if (region == 1 || region == 2) {
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107 files = biosfiles_jp;
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108 count = sizeof(biosfiles_jp) / sizeof(char *);
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113 for (i = 0; i < count; i++)
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115 emu_getMainDir(bios_path, sizeof(bios_path));
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116 strcat(bios_path, files[i]);
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117 strcat(bios_path, ".bin");
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118 f = fopen(bios_path, "rb");
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121 bios_path[strlen(bios_path) - 4] = 0;
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122 strcat(bios_path, ".zip");
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123 f = fopen(bios_path, "rb");
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128 lprintf("using bios: %s\n", bios_path);
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130 if (bios_file) *bios_file = bios_path;
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133 sprintf(menuErrorMsg, "no %s BIOS files found, read docs",
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134 region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
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135 lprintf("%s\n", menuErrorMsg);
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140 /* check if the name begins with BIOS name */
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141 static int emu_isBios(const char *name)
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144 for (i = 0; i < sizeof(biosfiles_us)/sizeof(biosfiles_us[0]); i++)
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145 if (strstr(name, biosfiles_us[i]) != NULL) return 1;
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146 for (i = 0; i < sizeof(biosfiles_eu)/sizeof(biosfiles_eu[0]); i++)
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147 if (strstr(name, biosfiles_eu[i]) != NULL) return 1;
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148 for (i = 0; i < sizeof(biosfiles_jp)/sizeof(biosfiles_jp[0]); i++)
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149 if (strstr(name, biosfiles_jp[i]) != NULL) return 1;
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153 /* checks if romFileName points to valid MegaCD image
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154 * if so, checks for suitable BIOS */
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155 int emu_cdCheck(int *pregion)
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157 unsigned char buf[32];
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159 int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe
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161 cd_f = pm_open(romFileName);
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162 if (!cd_f) return 0; // let the upper level handle this
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164 if (pm_read(buf, 32, cd_f) != 32) {
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169 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1; // Sega CD (ISO)
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170 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2; // Sega CD (BIN)
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176 /* it seems we have a CD image here. Try to detect region now.. */
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177 pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
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178 pm_read(buf, 1, cd_f);
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181 if (buf[0] == 0x64) region = 8; // EU
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182 if (buf[0] == 0xa1) region = 1; // JAP
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184 lprintf("detected %s Sega/Mega CD image with %s region\n",
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185 type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
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187 if (pregion != NULL) *pregion = region;
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192 int emu_ReloadRom(void)
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194 unsigned int rom_size = 0;
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195 char *used_rom_name = romFileName;
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196 unsigned char *rom_data = NULL;
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199 int ret, cd_state, cd_region, cfg_loaded = 0;
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201 lprintf("emu_ReloadRom(%s)\n", romFileName);
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203 get_ext(romFileName, ext);
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205 // detect wrong extensions
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206 if (!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz
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207 sprintf(menuErrorMsg, "Not a ROM selected.");
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213 // check for movie file
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218 if (!strcmp(ext, ".gmv")) {
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219 // check for both gmv and rom
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221 FILE *movie_file = fopen(romFileName, "rb");
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223 sprintf(menuErrorMsg, "Failed to open movie.");
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226 fseek(movie_file, 0, SEEK_END);
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227 movie_size = ftell(movie_file);
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228 fseek(movie_file, 0, SEEK_SET);
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229 if(movie_size < 64+3) {
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230 sprintf(menuErrorMsg, "Invalid GMV file.");
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231 fclose(movie_file);
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234 movie_data = malloc(movie_size);
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235 if(movie_data == NULL) {
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236 sprintf(menuErrorMsg, "low memory.");
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237 fclose(movie_file);
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240 fread(movie_data, 1, movie_size, movie_file);
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241 fclose(movie_file);
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242 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {
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243 sprintf(menuErrorMsg, "Invalid GMV file.");
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246 dummy = try_rfn_cut() || try_rfn_cut();
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248 sprintf(menuErrorMsg, "Could't find a ROM for movie.");
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251 get_ext(romFileName, ext);
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253 else if (!strcmp(ext, ".pat")) {
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255 PicoPatchLoad(romFileName);
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256 dummy = try_rfn_cut() || try_rfn_cut();
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258 sprintf(menuErrorMsg, "Could't find a ROM to patch.");
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261 get_ext(romFileName, ext);
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264 if ((PicoMCD & 1) && Pico_mcd != NULL)
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267 // check for MegaCD image
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268 cd_state = emu_cdCheck(&cd_region);
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271 // valid CD image, check for BIOS..
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273 // we need to have config loaded at this point
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274 ret = emu_ReadConfig(1, 1);
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275 if (!ret) emu_ReadConfig(0, 1);
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278 if (PicoRegionOverride) {
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279 cd_region = PicoRegionOverride;
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280 lprintf("overrided region to %s\n", cd_region != 4 ? (cd_region == 8 ? "EU" : "JAP") : "USA");
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282 if (!emu_findBios(cd_region, &used_rom_name)) {
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288 get_ext(used_rom_name, ext);
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292 if (PicoMCD & 1) Stop_CD();
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296 rom = pm_open(used_rom_name);
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298 sprintf(menuErrorMsg, "Failed to open rom.");
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302 menu_romload_prepare(used_rom_name); // also CD load
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307 if ( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {
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308 sprintf(menuErrorMsg, "PicoCartLoad() failed.");
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309 lprintf("%s\n", menuErrorMsg);
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311 menu_romload_end();
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316 // detect wrong files (Pico crashes on very small files), also see if ROM EP is good
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317 if (rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||
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318 ((*(unsigned char *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {
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319 if (rom_data) free(rom_data);
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320 sprintf(menuErrorMsg, "Not a ROM selected.");
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321 menu_romload_end();
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325 // load config for this ROM (do this before insert to get correct region)
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327 ret = emu_ReadConfig(1, 1);
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328 if (!ret) emu_ReadConfig(0, 1);
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331 lprintf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);
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332 if (PicoCartInsert(rom_data, rom_size)) {
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333 sprintf(menuErrorMsg, "Failed to load ROM.");
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334 menu_romload_end();
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338 Pico.m.frame_count = 0;
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340 // insert CD if it was detected
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341 if (cd_state > 0) {
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342 ret = Insert_CD(romFileName, cd_state == 2);
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344 sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");
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345 lprintf("%s\n", menuErrorMsg);
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346 menu_romload_end();
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351 menu_romload_end();
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353 if (!emu_isBios(romFileName))
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355 // emu_ReadConfig() might have messed currentConfig.lastRomFile
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356 strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);
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357 currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;
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361 PicoPatchPrepare();
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365 // additional movie stuff
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367 if(movie_data[0x14] == '6')
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368 PicoOpt |= 0x20; // 6 button pad
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369 else PicoOpt &= ~0x20;
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370 PicoOpt |= 0x10040; // accurate timing, no VDP fifo timing
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371 if(movie_data[0xF] >= 'A') {
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372 if(movie_data[0x16] & 0x80) {
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373 PicoRegionOverride = 8;
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375 PicoRegionOverride = 4;
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378 // TODO: bits 6 & 5
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380 movie_data[0x18+30] = 0;
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381 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);
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385 PicoOpt &= ~0x10000;
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387 strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");
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389 strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");
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392 emu_noticeMsgUpdated();
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394 // load SRAM for this ROM
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395 if (currentConfig.EmuOpt & 1)
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396 emu_SaveLoadGame(1, 1);
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403 static void romfname_ext(char *dst, const char *prefix, const char *ext)
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406 int prefix_len = 0;
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408 // make save filename
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409 for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;
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412 strcpy(dst, prefix);
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413 prefix_len = strlen(prefix);
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415 strncpy(dst + prefix_len, p, 511-prefix_len);
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417 if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;
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418 if (ext) strcat(dst, ext);
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422 int emu_ReadConfig(int game, int no_defaults)
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425 char cfg[512], extbuf[16];
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432 emu_setDefaultConfig();
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434 strncpy(cfg, PicoConfigFile, 511);
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435 if (config_slot != 0)
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437 char *p = strrchr(cfg, '.');
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438 if (p == NULL) p = cfg + strlen(cfg);
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439 sprintf(extbuf, ".%i.pbcfg", config_slot);
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440 strncpy(p, extbuf, 511 - (p - cfg));
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444 if (config_slot != 0)
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445 sprintf(extbuf, ".%i.pbcfg", config_slot);
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446 else strcpy(extbuf, ".pbcfg");
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447 romfname_ext(cfg, "cfg/", extbuf);
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448 f = fopen(cfg, "rb");
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449 if (!f) romfname_ext(cfg, NULL, ".pbcfg");
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453 lprintf("emu_ReadConfig: %s ", cfg);
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454 f = fopen(cfg, "rb");
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456 bread = fread(¤tConfig, 1, sizeof(currentConfig), f);
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459 lprintf(bread > 0 ? "(ok)\n" : "(failed)\n");
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461 PicoOpt = currentConfig.PicoOpt;
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462 PsndRate = currentConfig.PsndRate;
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463 PicoRegionOverride = currentConfig.PicoRegion;
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464 PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;
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465 PicoCDBuffers = currentConfig.PicoCDBuffers;
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466 //scaling_update();
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467 // some sanity checks
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468 if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;
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470 if (currentConfig.gamma < -4 || currentConfig.gamma > 16) currentConfig.gamma = 0;
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472 if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;
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474 if (currentConfig.volume < 0 || currentConfig.volume > 99) currentConfig.volume = 50;
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476 // if volume keys are unbound, bind them to volume control
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477 if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {
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478 currentConfig.KeyBinds[23] = 1<<29; // vol up
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479 currentConfig.KeyBinds[22] = 1<<30; // vol down
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482 if (bread > 0) config_slot_current = config_slot;
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483 return (bread > 0); // == sizeof(currentConfig));
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487 int emu_WriteConfig(int game)
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490 char cfg[512], extbuf[16];
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495 strncpy(cfg, PicoConfigFile, 511);
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496 if (config_slot != 0)
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498 char *p = strrchr(cfg, '.');
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499 if (p == NULL) p = cfg + strlen(cfg);
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500 sprintf(extbuf, ".%i.pbcfg", config_slot);
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501 strncpy(p, extbuf, 511 - (p - cfg));
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505 if (config_slot != 0)
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506 sprintf(extbuf, ".%i.pbcfg", config_slot);
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507 else strcpy(extbuf, ".pbcfg");
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508 romfname_ext(cfg, "cfg/", extbuf);
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511 lprintf("emu_WriteConfig: %s ", cfg);
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512 f = fopen(cfg, "wb");
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514 currentConfig.PicoOpt = PicoOpt;
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515 currentConfig.PsndRate = PsndRate;
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516 currentConfig.PicoRegion = PicoRegionOverride;
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517 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;
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518 currentConfig.PicoCDBuffers = PicoCDBuffers;
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519 bwrite = fwrite(¤tConfig, 1, sizeof(currentConfig), f);
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526 lprintf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");
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528 if (bwrite == sizeof(currentConfig)) config_slot_current = config_slot;
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529 return (bwrite == sizeof(currentConfig));
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533 void emu_textOut8(int x, int y, const char *text)
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535 int i,l,len=strlen(text);
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536 unsigned char *screen = (unsigned char *)SCREEN_BUFFER + x + y*SCREEN_WIDTH;
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538 /* always using built-in font */
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539 for (i = 0; i < len; i++)
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543 unsigned char fd = fontdata8x8[((text[i])*8)+l];
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544 if (fd&0x80) screen[l*SCREEN_WIDTH+0]=0xf0;
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545 if (fd&0x40) screen[l*SCREEN_WIDTH+1]=0xf0;
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546 if (fd&0x20) screen[l*SCREEN_WIDTH+2]=0xf0;
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547 if (fd&0x10) screen[l*SCREEN_WIDTH+3]=0xf0;
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548 if (fd&0x08) screen[l*SCREEN_WIDTH+4]=0xf0;
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549 if (fd&0x04) screen[l*SCREEN_WIDTH+5]=0xf0;
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550 if (fd&0x02) screen[l*SCREEN_WIDTH+6]=0xf0;
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551 if (fd&0x01) screen[l*SCREEN_WIDTH+7]=0xf0;
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557 void emu_textOut16(int x, int y, const char *text)
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559 int i,l,len=strlen(text);
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560 unsigned short *screen = (unsigned short *)SCREEN_BUFFER + x + y*SCREEN_WIDTH;
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562 for (i = 0; i < len; i++)
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566 unsigned char fd = fontdata8x8[((text[i])*8)+l];
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567 if(fd&0x80) screen[l*SCREEN_WIDTH+0]=0xffff;
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568 if(fd&0x40) screen[l*SCREEN_WIDTH+1]=0xffff;
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569 if(fd&0x20) screen[l*SCREEN_WIDTH+2]=0xffff;
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570 if(fd&0x10) screen[l*SCREEN_WIDTH+3]=0xffff;
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571 if(fd&0x08) screen[l*SCREEN_WIDTH+4]=0xffff;
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572 if(fd&0x04) screen[l*SCREEN_WIDTH+5]=0xffff;
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573 if(fd&0x02) screen[l*SCREEN_WIDTH+6]=0xffff;
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574 if(fd&0x01) screen[l*SCREEN_WIDTH+7]=0xffff;
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581 void emu_updateMovie(void)
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583 int offs = Pico.m.frame_count*3 + 0x40;
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584 if (offs+3 > movie_size) {
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587 strcpy(noticeMsg, "END OF MOVIE.");
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588 lprintf("END OF MOVIE.\n");
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589 emu_noticeMsgUpdated();
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592 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU
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593 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // A
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594 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // B
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595 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // A
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596 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU
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597 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A
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598 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B
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599 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A
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600 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX
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601 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X
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602 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z
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603 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX
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604 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X
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605 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z
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610 static size_t gzRead2(void *p, size_t _size, size_t _n, void *file)
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612 return gzread(file, p, _n);
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616 static size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)
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618 return gzwrite(file, p, _n);
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621 static int try_ropen_file(const char *fname)
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625 f = fopen(fname, "rb");
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633 char *emu_GetSaveFName(int load, int is_sram, int slot)
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635 static char saveFname[512];
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640 romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");
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642 if (try_ropen_file(saveFname)) return saveFname;
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643 // try in current dir..
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644 romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");
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645 if (try_ropen_file(saveFname)) return saveFname;
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646 return NULL; // give up
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652 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);
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653 strcat(ext, (currentConfig.EmuOpt & 8) ? ".mds.gz" : ".mds");
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655 romfname_ext(saveFname, "mds/", ext);
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657 if (try_ropen_file(saveFname)) return saveFname;
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658 romfname_ext(saveFname, NULL, ext);
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659 if (try_ropen_file(saveFname)) return saveFname;
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660 if (currentConfig.EmuOpt & 8) {
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662 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);
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663 strcat(ext, ".mds");
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665 romfname_ext(saveFname, "mds/", ext);
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666 if (try_ropen_file(saveFname)) return saveFname;
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667 romfname_ext(saveFname, NULL, ext);
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668 if (try_ropen_file(saveFname)) return saveFname;
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677 int emu_checkSaveFile(int slot)
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679 return emu_GetSaveFName(1, 0, slot) ? 1 : 0;
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682 void emu_setSaveStateCbs(int gz)
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685 areaRead = gzRead2;
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686 areaWrite = gzWrite2;
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687 areaEof = (areaeof *) gzeof;
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688 areaSeek = (areaseek *) gzseek;
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689 areaClose = (areaclose *) gzclose;
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691 areaRead = (arearw *) fread;
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692 areaWrite = (arearw *) fwrite;
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693 areaEof = (areaeof *) feof;
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694 areaSeek = (areaseek *) fseek;
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695 areaClose = (areaclose *) fclose;
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699 int emu_SaveLoadGame(int load, int sram)
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704 // make save filename
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705 saveFname = emu_GetSaveFName(load, sram, state_slot);
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706 if (saveFname == NULL) {
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708 strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED ");
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709 emu_noticeMsgUpdated();
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714 lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);
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720 unsigned char *sram_data;
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723 if (PicoOpt&0x8000) { // MCD RAM cart?
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724 sram_size = 0x12000;
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725 sram_data = SRam.data;
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727 memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);
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729 sram_size = 0x2000;
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730 sram_data = Pico_mcd->bram;
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731 truncate = 0; // the .brm may contain RAM cart data after normal brm
\r
734 sram_size = SRam.end-SRam.start+1;
\r
735 if(Pico.m.sram_reg & 4) sram_size=0x2000;
\r
736 sram_data = SRam.data;
\r
738 if (!sram_data) return 0; // SRam forcefully disabled for this game
\r
741 sramFile = fopen(saveFname, "rb");
\r
742 if(!sramFile) return -1;
\r
743 fread(sram_data, 1, sram_size, sramFile);
\r
745 if ((PicoMCD&1) && (PicoOpt&0x8000))
\r
746 memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);
\r
748 // sram save needs some special processing
\r
749 // see if we have anything to save
\r
750 for (; sram_size > 0; sram_size--)
\r
751 if (sram_data[sram_size-1]) break;
\r
754 sramFile = fopen(saveFname, truncate ? "wb" : "r+b");
\r
755 if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry
\r
756 if (!sramFile) return -1;
\r
757 ret = fwrite(sram_data, 1, sram_size, sramFile);
\r
758 ret = (ret != sram_size) ? -1 : 0;
\r
769 void *PmovFile = NULL;
\r
770 if (strcmp(saveFname + strlen(saveFname) - 3, ".gz") == 0)
\r
772 if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {
\r
773 emu_setSaveStateCbs(1);
\r
774 if (!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);
\r
779 if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {
\r
780 emu_setSaveStateCbs(0);
\r
784 ret = PmovState(load ? 6 : 5, PmovFile);
\r
785 areaClose(PmovFile);
\r
787 if (load) Pico.m.dirtyPal=1;
\r
794 strcpy(noticeMsg, load ? "GAME LOADED " : "GAME SAVED ");
\r
797 strcpy(noticeMsg, load ? "LOAD FAILED " : "SAVE FAILED ");
\r
801 emu_noticeMsgUpdated();
\r