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;
17 void (*PicoStateProgressCB)(const char *str) = 0;
48 static char *chunk_names[] = {
49 "Saving.. M68K state",
61 "Saving.. S68K state",
64 "Saving.. PCM_RAM", // 15
66 "Saving.. GATE ARRAY regs",
76 static int write_chunk(chunk_name_e name, int len, void *data, void *file)
79 bwritten += areaWrite(&name, 1, 1, file);
80 bwritten += areaWrite(&len, 1, 4, file);
81 bwritten += areaWrite(data, 1, len, file);
83 return (bwritten == len + 4 + 1);
87 #define CHECKED_WRITE(name,len,data) \
88 if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \
89 if (!write_chunk(name, len, data, file)) return 1;
91 #define CHECKED_WRITE_BUFF(name,buff) \
92 if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \
93 if (!write_chunk(name, sizeof(buff), &buff, file)) return 1;
95 int PicoCdSaveState(void *file)
97 unsigned char buff[0x60];
98 void *ym2612_regs = YM2612GetRegs();
100 areaWrite("PicoSMCD", 1, 8, file);
101 areaWrite(&PicoVer, 1, 4, file);
103 memset(buff, 0, sizeof(buff));
104 PicoAreaPackCpu(buff, 0);
105 CHECKED_WRITE_BUFF(CHUNK_M68K, buff);
106 CHECKED_WRITE_BUFF(CHUNK_RAM, Pico.ram);
107 CHECKED_WRITE_BUFF(CHUNK_VRAM, Pico.vram);
108 CHECKED_WRITE_BUFF(CHUNK_ZRAM, Pico.zram);
109 CHECKED_WRITE_BUFF(CHUNK_CRAM, Pico.cram);
110 CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram);
111 CHECKED_WRITE_BUFF(CHUNK_MISC, Pico.m);
112 CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video);
114 memset(buff, 0, sizeof(buff));
116 CHECKED_WRITE_BUFF(CHUNK_Z80, buff);
119 CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs);
121 CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);
125 Pico_mcd->m.audio_offset = mp3_get_offset();
126 memset(buff, 0, sizeof(buff));
127 PicoAreaPackCpu(buff, 1);
128 if (Pico_mcd->s68k_regs[3]&4) // 1M mode?
129 wram_1M_to_2M(Pico_mcd->word_ram2M);
130 Pico_mcd->m.hint_vector = *(unsigned short *)(Pico_mcd->bios + 0x72);
132 CHECKED_WRITE_BUFF(CHUNK_S68K, buff);
133 CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram);
134 CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format
135 CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram);
136 CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram);
137 CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs
138 CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm);
139 CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd);
140 CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc);
141 CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd);
142 CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp);
143 CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m);
145 if (Pico_mcd->s68k_regs[3]&4) // convert back
146 wram_2M_to_1M(Pico_mcd->word_ram2M);
152 static int g_read_offs = 0;
154 #define R_ERROR_RETURN(error) \
156 printf("PicoCdLoadState @ %x: " error "\n", g_read_offs); \
160 // when is eof really set?
161 #define CHECKED_READ(len,data) \
162 if (areaRead(data, 1, len, file) != len) { \
163 if (len == 1 && areaEof(file)) return 0; \
164 R_ERROR_RETURN("areaRead: premature EOF\n"); \
169 #define CHECKED_READ2(len2,data) \
170 if (len2 != len) R_ERROR_RETURN("unexpected len, wanted " #len2); \
171 CHECKED_READ(len2, data)
173 #define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);
175 int PicoCdLoadState(void *file)
177 unsigned char buff[0x60];
179 void *ym2612_regs = YM2612GetRegs();
182 CHECKED_READ(8, buff);
183 if (strncmp((char *)buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header");
184 CHECKED_READ(4, &ver);
186 while (!areaEof(file))
188 CHECKED_READ(1, buff);
189 CHECKED_READ(4, &len);
190 if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");
191 if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?");
196 CHECKED_READ_BUFF(buff);
197 PicoAreaUnpackCpu(buff, 0);
201 CHECKED_READ_BUFF(buff);
205 case CHUNK_RAM: CHECKED_READ_BUFF(Pico.ram); break;
206 case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); break;
207 case CHUNK_ZRAM: CHECKED_READ_BUFF(Pico.zram); break;
208 case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); break;
209 case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); break;
210 case CHUNK_MISC: CHECKED_READ_BUFF(Pico.m); break;
211 case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); break;
212 case CHUNK_PSG: CHECKED_READ2(28*4, sn76496_regs); break;
214 CHECKED_READ2(0x200+4, ym2612_regs);
215 YM2612PicoStateLoad();
220 CHECKED_READ_BUFF(buff);
221 PicoAreaUnpackCpu(buff, 1);
224 case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;
225 case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;
226 case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;
227 case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break;
228 case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;
229 case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break;
230 case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break;
231 case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break;
232 case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break;
233 case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;
234 case CHUNK_MISC_CD: CHECKED_READ_BUFF(Pico_mcd->m); break;
237 printf("PicoCdLoadState: skipping unknown chunk %i of size %i\n", buff[0], len);
238 areaSeek(file, len, SEEK_CUR);
243 /* after load events */
244 if (Pico_mcd->s68k_regs[3]&4) // 1M mode?
245 wram_2M_to_1M(Pico_mcd->word_ram2M);
246 #ifdef _ASM_CD_MEMORY_C
247 PicoMemResetCD(Pico_mcd->s68k_regs[3]);
248 if (Pico_mcd->s68k_regs[3]&4)
249 PicoMemResetCDdecode(Pico_mcd->s68k_regs[3]);
251 if (Pico_mcd->m.audio_track > 0 && Pico_mcd->m.audio_track < Pico_mcd->TOC.Last_Track)
252 mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset);
253 // restore hint vector
254 *(unsigned short *)(Pico_mcd->bios + 0x72) = Pico_mcd->m.hint_vector;
260 int PicoCdLoadStateGfx(void *file)
262 int ver, len, found = 0;
266 CHECKED_READ(8, buff);
267 if (strncmp(buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header");
268 CHECKED_READ(4, &ver);
270 while (!areaEof(file) && found < 4)
272 CHECKED_READ(1, buff);
273 CHECKED_READ(4, &len);
274 if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");
275 if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?");
279 case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); found++; break;
280 case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); found++; break;
281 case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;
282 case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;
284 areaSeek(file, len, SEEK_CUR);