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1 | // This is part of Pico Library |
2 | |
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3 | // (c) Copyright 2007 notaz, All rights reserved. |
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4 | // Free for non-commercial use. |
5 | |
6 | // For commercial use, separate licencing terms must be obtained. |
7 | |
8 | |
9 | #include "../PicoInt.h" |
10 | |
11 | // ym2612 |
12 | #include "../sound/ym2612.h" |
13 | |
14 | // sn76496 |
15 | extern int *sn76496_regs; |
16 | |
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17 | void (*PicoStateProgressCB)(const char *str) = 0; |
18 | |
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19 | |
20 | typedef enum { |
21 | CHUNK_M68K = 1, |
22 | CHUNK_RAM, |
23 | CHUNK_VRAM, |
24 | CHUNK_ZRAM, |
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25 | CHUNK_CRAM, // 5 |
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26 | CHUNK_VSRAM, |
27 | CHUNK_MISC, |
28 | CHUNK_VIDEO, |
29 | CHUNK_Z80, |
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30 | CHUNK_PSG, // 10 |
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31 | CHUNK_FM, |
32 | // CD stuff |
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33 | CHUNK_S68K, |
34 | CHUNK_PRG_RAM, |
35 | CHUNK_WORD_RAM, |
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36 | CHUNK_PCM_RAM, // 15 |
37 | CHUNK_BRAM, |
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38 | CHUNK_GA_REGS, |
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39 | CHUNK_PCM, |
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40 | CHUNK_CDC, |
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41 | CHUNK_CDD, // 20 |
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42 | CHUNK_SCD, |
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43 | CHUNK_RC, |
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44 | CHUNK_MISC_CD, |
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45 | } chunk_name_e; |
46 | |
47 | |
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48 | static char *chunk_names[] = { |
49 | "Saving.. M68K state", |
50 | "Saving.. RAM", |
51 | "Saving.. VRAM", |
52 | "Saving.. ZRAM", |
53 | "Saving.. CRAM", // 5 |
54 | "Saving.. VSRAM", |
55 | "Saving.. emu state", |
56 | "Saving.. VIDEO", |
57 | "Saving.. Z80 state", |
58 | "Saving.. PSG", // 10 |
59 | "Saving.. FM", |
60 | // CD stuff |
61 | "Saving.. S68K state", |
62 | "Saving.. PRG_RAM", |
63 | "Saving.. WORD_RAM", |
64 | "Saving.. PCM_RAM", // 15 |
65 | "Saving.. BRAM", |
66 | "Saving.. GATE ARRAY regs", |
67 | "Saving.. PCM state", |
68 | "Saving.. CDC", |
69 | "Saving.. CDD", // 20 |
70 | "Saving.. SCD", |
71 | "Saving.. GFX chip", |
72 | "Saving.. MCD state", |
73 | }; |
74 | |
75 | |
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76 | static int write_chunk(chunk_name_e name, int len, void *data, void *file) |
77 | { |
78 | size_t bwritten = 0; |
79 | bwritten += areaWrite(&name, 1, 1, file); |
80 | bwritten += areaWrite(&len, 1, 4, file); |
81 | bwritten += areaWrite(data, 1, len, file); |
82 | |
83 | return (bwritten == len + 4 + 1); |
84 | } |
85 | |
86 | |
87 | #define CHECKED_WRITE(name,len,data) \ |
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88 | if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \ |
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89 | if (!write_chunk(name, len, data, file)) return 1; |
90 | |
91 | #define CHECKED_WRITE_BUFF(name,buff) \ |
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92 | if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \ |
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93 | if (!write_chunk(name, sizeof(buff), &buff, file)) return 1; |
94 | |
95 | int PicoCdSaveState(void *file) |
96 | { |
97 | unsigned char buff[0x60]; |
98 | void *ym2612_regs = YM2612GetRegs(); |
99 | |
100 | areaWrite("PicoSMCD", 1, 8, file); |
101 | areaWrite(&PicoVer, 1, 4, file); |
102 | |
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); |
113 | if(PicoOpt&7) { |
114 | memset(buff, 0, sizeof(buff)); |
115 | z80_pack(buff); |
116 | CHECKED_WRITE_BUFF(CHUNK_Z80, buff); |
117 | } |
118 | if(PicoOpt&3) |
119 | CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs); |
120 | if(PicoOpt&1) |
121 | CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs); |
122 | |
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123 | if (PicoMCD & 1) |
124 | { |
125 | Pico_mcd->m.audio_offset = mp3_get_offset(); |
126 | memset(buff, 0, sizeof(buff)); |
127 | PicoAreaPackCpu(buff, 1); |
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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); |
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131 | |
132 | CHECKED_WRITE_BUFF(CHUNK_S68K, buff); |
133 | CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram); |
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134 | CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format |
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135 | CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram); |
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136 | CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram); |
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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); |
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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); |
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144 | |
145 | if (Pico_mcd->s68k_regs[3]&4) // convert back |
146 | wram_2M_to_1M(Pico_mcd->word_ram2M); |
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147 | } |
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148 | |
149 | return 0; |
150 | } |
151 | |
152 | static int g_read_offs = 0; |
153 | |
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154 | #define R_ERROR_RETURN(error) \ |
155 | { \ |
156 | printf("PicoCdLoadState @ %x: " error "\n", g_read_offs); \ |
157 | return 1; \ |
158 | } |
159 | |
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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"); \ |
165 | return 1; \ |
166 | } \ |
167 | g_read_offs += len; |
168 | |
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169 | #define CHECKED_READ2(len2,data) \ |
170 | if (len2 != len) R_ERROR_RETURN("unexpected len, wanted " #len2); \ |
171 | CHECKED_READ(len2, data) |
172 | |
173 | #define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff); |
174 | |
175 | int PicoCdLoadState(void *file) |
176 | { |
177 | unsigned char buff[0x60]; |
178 | int ver, len; |
179 | void *ym2612_regs = YM2612GetRegs(); |
180 | |
181 | g_read_offs = 0; |
182 | CHECKED_READ(8, buff); |
183 | if (strncmp((char *)buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header"); |
184 | CHECKED_READ(4, &ver); |
185 | |
186 | while (!areaEof(file)) |
187 | { |
188 | CHECKED_READ(1, buff); |
189 | CHECKED_READ(4, &len); |
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190 | if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length"); |
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191 | if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?"); |
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192 | |
193 | switch (buff[0]) |
194 | { |
195 | case CHUNK_M68K: |
196 | CHECKED_READ_BUFF(buff); |
197 | PicoAreaUnpackCpu(buff, 0); |
198 | break; |
199 | |
200 | case CHUNK_Z80: |
201 | CHECKED_READ_BUFF(buff); |
202 | z80_unpack(buff); |
203 | break; |
204 | |
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; |
213 | case CHUNK_FM: |
214 | CHECKED_READ2(0x200+4, ym2612_regs); |
215 | YM2612PicoStateLoad(); |
216 | break; |
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217 | |
218 | // cd stuff |
219 | case CHUNK_S68K: |
220 | CHECKED_READ_BUFF(buff); |
221 | PicoAreaUnpackCpu(buff, 1); |
222 | break; |
223 | |
224 | case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break; |
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225 | case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break; |
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226 | case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break; |
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227 | case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break; |
228 | case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break; |
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229 | case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break; |
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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; |
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234 | case CHUNK_MISC_CD: CHECKED_READ_BUFF(Pico_mcd->m); break; |
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235 | |
236 | default: |
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237 | printf("PicoCdLoadState: skipping unknown chunk %i of size %i\n", buff[0], len); |
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238 | areaSeek(file, len, SEEK_CUR); |
239 | break; |
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240 | } |
241 | } |
242 | |
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243 | /* after load events */ |
244 | if (Pico_mcd->s68k_regs[3]&4) // 1M mode? |
245 | wram_2M_to_1M(Pico_mcd->word_ram2M); |
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246 | if (Pico_mcd->m.audio_track > 0 && Pico_mcd->m.audio_track < Pico_mcd->TOC.Last_Track) |
247 | mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset); |
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248 | // restore hint vector |
249 | *(unsigned short *)(Pico_mcd->bios + 0x72) = Pico_mcd->m.hint_vector; |
250 | |
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251 | return 0; |
252 | } |
253 | |
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254 | |
255 | int PicoCdLoadStateGfx(void *file) |
256 | { |
257 | int ver, len, found = 0; |
258 | char buff[8]; |
259 | |
260 | g_read_offs = 0; |
261 | CHECKED_READ(8, buff); |
262 | if (strncmp(buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header"); |
263 | CHECKED_READ(4, &ver); |
264 | |
265 | while (!areaEof(file) && found < 4) |
266 | { |
267 | CHECKED_READ(1, buff); |
268 | CHECKED_READ(4, &len); |
269 | if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length"); |
270 | if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?"); |
271 | |
272 | switch (buff[0]) |
273 | { |
274 | case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); found++; break; |
275 | case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); found++; break; |
276 | case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break; |
277 | case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break; |
278 | default: |
279 | areaSeek(file, len, SEEK_CUR); |
280 | break; |
281 | } |
282 | } |
283 | |
284 | return 0; |
285 | } |
286 | |
287 | |