static int detect_media(const char *fname)\r
{\r
static const short sms_offsets[] = { 0x7ff0, 0x3ff0, 0x1ff0 };\r
+ static const char *sms_exts[] = { "sms", "gg", "sg" };\r
+ static const char *md_exts[] = { "gen", "bin", "smd" };\r
+ char buff0[32], buff[32];\r
+ unsigned short *d16;\r
pm_file *pmf;\r
- char buff[32];\r
char ext[5];\r
int i;\r
\r
if (pmf == NULL)\r
return PM_BAD;\r
\r
- if (pm_read(buff, 32, pmf) != 32) {\r
+ if (pm_read(buff0, 32, pmf) != 32) {\r
pm_close(pmf);\r
return PM_BAD;\r
}\r
\r
- if (strncasecmp("SEGADISCSYSTEM", buff + 0x00, 14) == 0 ||\r
- strncasecmp("SEGADISCSYSTEM", buff + 0x10, 14) == 0) {\r
+ if (strncasecmp("SEGADISCSYSTEM", buff0 + 0x00, 14) == 0 ||\r
+ strncasecmp("SEGADISCSYSTEM", buff0 + 0x10, 14) == 0) {\r
pm_close(pmf);\r
return PM_CD;\r
}\r
\r
+ /* check for SMD evil */\r
+ if (pmf->size >= 0x4200 && (pmf->size & 0x3fff) == 0x200) {\r
+ if (pm_seek(pmf, sms_offsets[0] + 0x200, SEEK_SET) == sms_offsets[0] + 0x200 &&\r
+ pm_read(buff, 16, pmf) == 16 &&\r
+ strncmp("TMR SEGA", buff, 8) == 0)\r
+ goto looks_like_sms;\r
+\r
+ /* could parse further but don't bother */\r
+ goto extension_check;\r
+ }\r
+\r
+ /* MD header? Act as TMSS BIOS here */\r
+ if (pm_seek(pmf, 0x100, SEEK_SET) == 0x100 && pm_read(buff, 16, pmf) == 16) {\r
+ if (strncmp(buff, "SEGA", 4) == 0 || strncmp(buff, " SEG", 4) == 0)\r
+ goto looks_like_md;\r
+ }\r
+\r
for (i = 0; i < array_size(sms_offsets); i++) {\r
if (pm_seek(pmf, sms_offsets[i], SEEK_SET) != sms_offsets[i])\r
- goto not_mark3; /* actually it could be but can't be detected */\r
+ continue;\r
\r
if (pm_read(buff, 16, pmf) != 16)\r
- goto not_mark3;\r
+ continue;\r
\r
- if (strncasecmp("TMR SEGA", buff, 8) == 0) {\r
- pm_close(pmf);\r
- return PM_MARK3;\r
- }\r
+ if (strncmp("TMR SEGA", buff, 8) == 0)\r
+ goto looks_like_sms;\r
+ }\r
+\r
+extension_check:\r
+ /* probably some headerless thing. Maybe check the extension after all. */\r
+ for (i = 0; i < array_size(md_exts); i++)\r
+ if (strcasecmp(pmf->ext, md_exts[i]) == 0)\r
+ goto looks_like_md;\r
+\r
+ for (i = 0; i < array_size(sms_exts); i++)\r
+ if (strcasecmp(pmf->ext, sms_exts[i]) == 0)\r
+ goto looks_like_sms;\r
+\r
+ /* If everything else fails, make a guess on the reset vector */\r
+ d16 = (unsigned short *)(buff0 + 4);\r
+ if ((((d16[0] << 16) | d16[1]) & 0xffffff) >= pmf->size) {\r
+ lprintf("bad MD reset vector, assuming SMS\n");\r
+ goto looks_like_sms;\r
}\r
\r
-not_mark3:\r
+looks_like_md:\r
pm_close(pmf);\r
- /* the main emu function is to emulate MD, so assume MD */\r
return PM_MD_CART;\r
+\r
+looks_like_sms:\r
+ pm_close(pmf);\r
+ return PM_MARK3;\r
}\r
\r
static int extract_text(char *dest, const unsigned char *src, int len, int swab)\r
PicoAHW &= ~PAHW_MCD;\r
}\r
\r
+static void system_announce(void)\r
+{\r
+ const char *sys_name, *tv_standard;\r
+ int fps;\r
+\r
+ if (PicoAHW & PAHW_SMS) {\r
+ sys_name = "Master System";\r
+ } else if (PicoAHW & PAHW_PICO) {\r
+ sys_name = "Pico";\r
+ } else if (PicoAHW & PAHW_MCD) {\r
+ sys_name = "Mega CD";\r
+ if ((Pico.m.hardware & 0xc0) == 0x80)\r
+ sys_name = "Sega CD";\r
+ } else if (PicoAHW & PAHW_32X) {\r
+ sys_name = "32X";\r
+ } else {\r
+ sys_name = "MegaDrive";\r
+ if ((Pico.m.hardware & 0xc0) == 0x80)\r
+ sys_name = "Genesis";\r
+ }\r
+ tv_standard = Pico.m.pal ? "PAL" : "NTSC";\r
+ fps = Pico.m.pal ? 50 : 60;\r
+\r
+ emu_status_msg("%s %s / %dFPS", tv_standard, sys_name, fps);\r
+}\r
+\r
// note: this function might mangle rom_fname\r
// XXX: portions of this code should move to pico/\r
int emu_reload_rom(char *rom_fname)\r
\r
shutdown_MCD();\r
PicoPatchUnload();\r
+ PicoAHW = 0;\r
\r
if (media_type == PM_CD)\r
{\r
}\r
else\r
{\r
- const char *sys_name, *tv_standard;\r
- int fps;\r
-\r
- if (PicoAHW & PAHW_SMS) {\r
- sys_name = "Master System";\r
- } else {\r
- sys_name = "MegaDrive";\r
- if ((Pico.m.hardware&0xc0) == 0x80)\r
- sys_name = "Genesis";\r
- }\r
- tv_standard = Pico.m.pal ? "PAL" : "NTSC";\r
- fps = Pico.m.pal ? 50 : 60;\r
-\r
- emu_status_msg("%s %s / %dFPS", tv_standard, sys_name, fps);\r
-\r
+ system_announce();\r
PicoOpt &= ~POPT_DIS_VDP_FIFO;\r
}\r
\r
int truncate = 1;\r
if (PicoAHW & PAHW_MCD)\r
{\r
- if (PicoOpt&POPT_EN_MCD_RAMCART) {\r
+ if (PicoOpt & POPT_EN_MCD_RAMCART) {\r
sram_size = 0x12000;\r
sram_data = SRam.data;\r
if (sram_data)\r
truncate = 0; // the .brm may contain RAM cart data after normal brm\r
}\r
} else {\r
- sram_size = SRam.end-SRam.start+1;\r
- if(Pico.m.sram_reg & 4) sram_size=0x2000;\r
+ sram_size = SRam.size;\r
sram_data = SRam.data;\r
}\r
if (!sram_data) return 0; // SRam forcefully disabled for this game\r
emu_status_msg("CD tray closed.");\r
}\r
\r
+void emu_32x_startup(void)\r
+{\r
+ plat_video_toggle_renderer(0, 1, 0);\r
+ system_announce();\r
+}\r
+\r
void emu_reset_game(void)\r
{\r
PicoReset();\r
PicoStateProgressCB = NULL;\r
}\r
}\r
- if (which & PEV_SWITCH_RND)\r
+ if ((which & PEV_SWITCH_RND) && !(PicoAHW & PAHW_32X))\r
{\r
- plat_video_toggle_renderer(1, 0);\r
+ plat_video_toggle_renderer(1, 0, 0);\r
}\r
if (which & (PEV_SSLOT_PREV|PEV_SSLOT_NEXT))\r
{\r
{\r
int pframes_done; /* "period" frames, used for sync */\r
int frames_done, frames_shown; /* actual frames for fps counter */\r
- int oldmodes, target_fps, target_frametime;\r
+ int target_fps, target_frametime;\r
unsigned int timestamp_base = 0, timestamp_fps;\r
char *notice_msg = NULL;\r
char fpsbuff[24];\r
fpsbuff[0] = 0;\r
\r
/* make sure we are in correct mode */\r
- oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
Pico.m.dirtyPal = 1;\r
+ rendstatus_old = -1;\r
\r
/* number of ticks per frame */\r
if (Pico.m.pal) {\r
{\r
unsigned int timestamp;\r
int diff, diff_lim;\r
- int modes;\r
\r
timestamp = get_ticks();\r
if (reset_timing) {\r
}\r
}\r
\r
- // check for mode changes\r
- modes = ((Pico.video.reg[12]&1)<<2) | (Pico.video.reg[1]&8);\r
- if (modes != oldmodes) {\r
- oldmodes = modes;\r
- pemu_video_mode_change(!(modes & 4), (modes & 8));\r
- }\r
-\r
// second changed?\r
if (timestamp - timestamp_fps >= ms_to_ticks(1000))\r
{\r