-// This is part of Pico Library
-
-// (c) Copyright 2007 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"
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_ram); // in 2M format
+ 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_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;
break;
case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;
- case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_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_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;
- case CHUNK_MISC_CD:
- CHECKED_READ_BUFF(Pico_mcd->m);
- mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset);
+ 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:
- printf("skipping unknown chunk %i of size %i\n", buff[0], len);
areaSeek(file, len, SEEK_CUR);
break;
}
return 0;
}
+