-// This is part of Pico Library
-
-// (c) Copyright 2006 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+// Savestate handling for emulated Sega/Mega CD machine.
+// (c) Copyright 2007, Grazvydas "notaz" Ignotas
#include "../PicoInt.h"
// sn76496
extern int *sn76496_regs;
+void (*PicoStateProgressCB)(const char *str) = 0;
+
typedef enum {
CHUNK_M68K = 1,
CHUNK_RAM,
CHUNK_VRAM,
CHUNK_ZRAM,
- CHUNK_CRAM,
+ CHUNK_CRAM, // 5
CHUNK_VSRAM,
CHUNK_MISC,
CHUNK_VIDEO,
CHUNK_Z80,
- CHUNK_PSG,
+ CHUNK_PSG, // 10
CHUNK_FM,
// CD stuff
+ CHUNK_S68K,
+ CHUNK_PRG_RAM,
+ CHUNK_WORD_RAM,
+ CHUNK_PCM_RAM, // 15
+ CHUNK_BRAM,
+ CHUNK_GA_REGS,
+ CHUNK_PCM,
+ CHUNK_CDC,
+ CHUNK_CDD, // 20
+ CHUNK_SCD,
+ CHUNK_RC,
+ CHUNK_MISC_CD,
} chunk_name_e;
+static char *chunk_names[] = {
+ "Saving.. M68K state",
+ "Saving.. RAM",
+ "Saving.. VRAM",
+ "Saving.. ZRAM",
+ "Saving.. CRAM", // 5
+ "Saving.. VSRAM",
+ "Saving.. emu state",
+ "Saving.. VIDEO",
+ "Saving.. Z80 state",
+ "Saving.. PSG", // 10
+ "Saving.. FM",
+ // CD stuff
+ "Saving.. S68K state",
+ "Saving.. PRG_RAM",
+ "Saving.. WORD_RAM",
+ "Saving.. PCM_RAM", // 15
+ "Saving.. BRAM",
+ "Saving.. GATE ARRAY regs",
+ "Saving.. PCM state",
+ "Saving.. CDC",
+ "Saving.. CDD", // 20
+ "Saving.. SCD",
+ "Saving.. GFX chip",
+ "Saving.. MCD state",
+};
+
+
static int write_chunk(chunk_name_e name, int len, void *data, void *file)
{
size_t bwritten = 0;
#define CHECKED_WRITE(name,len,data) \
+ if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \
if (!write_chunk(name, len, data, file)) return 1;
#define CHECKED_WRITE_BUFF(name,buff) \
+ if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \
if (!write_chunk(name, sizeof(buff), &buff, file)) return 1;
-int PicoCdSaveState(void *file)
+PICO_INTERNAL int PicoCdSaveState(void *file)
{
unsigned char buff[0x60];
void *ym2612_regs = YM2612GetRegs();
if(PicoOpt&1)
CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);
- // TODO: cd stuff
+ if (PicoMCD & 1)
+ {
+ Pico_mcd->m.audio_offset = mp3_get_offset();
+ memset(buff, 0, sizeof(buff));
+ PicoAreaPackCpu(buff, 1);
+ if (Pico_mcd->s68k_regs[3]&4) // 1M mode?
+ wram_1M_to_2M(Pico_mcd->word_ram2M);
+ Pico_mcd->m.hint_vector = *(unsigned short *)(Pico_mcd->bios + 0x72);
+
+ CHECKED_WRITE_BUFF(CHUNK_S68K, buff);
+ CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram);
+ CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format
+ CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram);
+ CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram);
+ CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs
+ CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm);
+ CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd);
+ CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc);
+ CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd);
+ CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp);
+ CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m);
+
+ if (Pico_mcd->s68k_regs[3]&4) // convert back
+ wram_2M_to_1M(Pico_mcd->word_ram2M);
+ }
return 0;
}
static int g_read_offs = 0;
-#define CHECKED_READ(len,data) \
- if (areaRead(data, 1, len, file) != len) { \
- g_read_offs += len; \
- printf("areaRead: premature EOF\n"); \
- return 0; \
- }
-
#define R_ERROR_RETURN(error) \
{ \
printf("PicoCdLoadState @ %x: " error "\n", g_read_offs); \
return 1; \
}
+// when is eof really set?
+#define CHECKED_READ(len,data) \
+ if (areaRead(data, 1, len, file) != len) { \
+ if (len == 1 && areaEof(file)) return 0; \
+ R_ERROR_RETURN("areaRead: premature EOF\n"); \
+ return 1; \
+ } \
+ g_read_offs += len;
+
#define CHECKED_READ2(len2,data) \
if (len2 != len) R_ERROR_RETURN("unexpected len, wanted " #len2); \
CHECKED_READ(len2, data)
#define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);
-int PicoCdLoadState(void *file)
+PICO_INTERNAL int PicoCdLoadState(void *file)
{
unsigned char buff[0x60];
int ver, len;
{
CHECKED_READ(1, buff);
CHECKED_READ(4, &len);
- if (len < 0 || len > 1024*256) R_ERROR_RETURN("bad length");
+ if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");
+ if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?");
switch (buff[0])
{
CHECKED_READ2(0x200+4, ym2612_regs);
YM2612PicoStateLoad();
break;
+
+ // cd stuff
+ case CHUNK_S68K:
+ CHECKED_READ_BUFF(buff);
+ PicoAreaUnpackCpu(buff, 1);
+ break;
+
+ case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;
+ case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;
+ case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;
+ case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break;
+ case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;
+ case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break;
+ case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break;
+ case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break;
+ case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break;
+ case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;
+ case CHUNK_MISC_CD: CHECKED_READ_BUFF(Pico_mcd->m); break;
+
+ default:
+ printf("PicoCdLoadState: skipping unknown chunk %i of size %i\n", buff[0], len);
+ areaSeek(file, len, SEEK_CUR);
+ break;
}
}
+ /* after load events */
+ if (Pico_mcd->s68k_regs[3]&4) // 1M mode?
+ wram_2M_to_1M(Pico_mcd->word_ram2M);
+#ifdef _ASM_CD_MEMORY_C
+ PicoMemResetCD(Pico_mcd->s68k_regs[3]);
+ if (Pico_mcd->s68k_regs[3]&4)
+ PicoMemResetCDdecode(Pico_mcd->s68k_regs[3]);
+#endif
+ if (Pico_mcd->m.audio_track > 0 && Pico_mcd->m.audio_track < Pico_mcd->TOC.Last_Track)
+ mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset);
+ // restore hint vector
+ *(unsigned short *)(Pico_mcd->bios + 0x72) = Pico_mcd->m.hint_vector;
+
return 0;
}
+
+int PicoCdLoadStateGfx(void *file)
+{
+ int ver, len, found = 0;
+ char buff[8];
+
+ g_read_offs = 0;
+ CHECKED_READ(8, buff);
+ if (strncmp(buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header");
+ CHECKED_READ(4, &ver);
+
+ while (!areaEof(file) && found < 4)
+ {
+ CHECKED_READ(1, buff);
+ CHECKED_READ(4, &len);
+ if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");
+ if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?");
+
+ switch (buff[0])
+ {
+ case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); found++; break;
+ case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); found++; break;
+ case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;
+ case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;
+ default:
+ areaSeek(file, len, SEEK_CUR);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+
notaz.gp2x.de / picodrive.git / blobdiff