1 // This is part of Pico Library
3 // (c) Copyright 2007 notaz, All rights reserved.
4 // Free for non-commercial use.
6 // For commercial use, separate licencing terms must be obtained.
9 #include "../PicoInt.h"
12 #include "../sound/ym2612.h"
15 extern int *sn76496_regs;
46 static int write_chunk(chunk_name_e name, int len, void *data, void *file)
49 bwritten += areaWrite(&name, 1, 1, file);
50 bwritten += areaWrite(&len, 1, 4, file);
51 bwritten += areaWrite(data, 1, len, file);
53 return (bwritten == len + 4 + 1);
57 #define CHECKED_WRITE(name,len,data) \
58 if (!write_chunk(name, len, data, file)) return 1;
60 #define CHECKED_WRITE_BUFF(name,buff) \
61 if (!write_chunk(name, sizeof(buff), &buff, file)) return 1;
63 int PicoCdSaveState(void *file)
65 unsigned char buff[0x60];
66 void *ym2612_regs = YM2612GetRegs();
68 areaWrite("PicoSMCD", 1, 8, file);
69 areaWrite(&PicoVer, 1, 4, file);
71 memset(buff, 0, sizeof(buff));
72 PicoAreaPackCpu(buff, 0);
73 CHECKED_WRITE_BUFF(CHUNK_M68K, buff);
74 CHECKED_WRITE_BUFF(CHUNK_RAM, Pico.ram);
75 CHECKED_WRITE_BUFF(CHUNK_VRAM, Pico.vram);
76 CHECKED_WRITE_BUFF(CHUNK_ZRAM, Pico.zram);
77 CHECKED_WRITE_BUFF(CHUNK_CRAM, Pico.cram);
78 CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram);
79 CHECKED_WRITE_BUFF(CHUNK_MISC, Pico.m);
80 CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video);
82 memset(buff, 0, sizeof(buff));
84 CHECKED_WRITE_BUFF(CHUNK_Z80, buff);
87 CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs);
89 CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);
94 Pico_mcd->m.audio_offset = mp3_get_offset();
95 memset(buff, 0, sizeof(buff));
96 PicoAreaPackCpu(buff, 1);
98 CHECKED_WRITE_BUFF(CHUNK_S68K, buff);
99 CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram);
100 CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram); // in 2M format
101 CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram);
102 CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram);
103 CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs
104 CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm);
105 CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd);
106 CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc);
107 CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd);
108 CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp);
109 CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m);
115 static int g_read_offs = 0;
117 #define R_ERROR_RETURN(error) \
119 printf("PicoCdLoadState @ %x: " error "\n", g_read_offs); \
123 // when is eof really set?
124 #define CHECKED_READ(len,data) \
125 if (areaRead(data, 1, len, file) != len) { \
126 if (len == 1 && areaEof(file)) return 0; \
127 R_ERROR_RETURN("areaRead: premature EOF\n"); \
132 #define CHECKED_READ2(len2,data) \
133 if (len2 != len) R_ERROR_RETURN("unexpected len, wanted " #len2); \
134 CHECKED_READ(len2, data)
136 #define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);
138 int PicoCdLoadState(void *file)
140 unsigned char buff[0x60];
142 void *ym2612_regs = YM2612GetRegs();
145 CHECKED_READ(8, buff);
146 if (strncmp((char *)buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header");
147 CHECKED_READ(4, &ver);
149 while (!areaEof(file))
151 CHECKED_READ(1, buff);
152 CHECKED_READ(4, &len);
153 if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");
154 if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?");
159 CHECKED_READ_BUFF(buff);
160 PicoAreaUnpackCpu(buff, 0);
164 CHECKED_READ_BUFF(buff);
168 case CHUNK_RAM: CHECKED_READ_BUFF(Pico.ram); break;
169 case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); break;
170 case CHUNK_ZRAM: CHECKED_READ_BUFF(Pico.zram); break;
171 case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); break;
172 case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); break;
173 case CHUNK_MISC: CHECKED_READ_BUFF(Pico.m); break;
174 case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); break;
175 case CHUNK_PSG: CHECKED_READ2(28*4, sn76496_regs); break;
177 CHECKED_READ2(0x200+4, ym2612_regs);
178 YM2612PicoStateLoad();
183 CHECKED_READ_BUFF(buff);
184 PicoAreaUnpackCpu(buff, 1);
187 case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;
188 case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram); break;
189 case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;
190 case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break;
191 case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;
192 case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break;
193 case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break;
194 case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break;
195 case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break;
196 case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;
199 CHECKED_READ_BUFF(Pico_mcd->m);
200 mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset);
204 printf("skipping unknown chunk %i of size %i\n", buff[0], len);
205 areaSeek(file, len, SEEK_CUR);