cue/bin finally implemented
[picodrive.git] / Pico / cd / Pico.c
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672ad671 1// (c) Copyright 2007 notaz, All rights reserved.
cc68a136 2
3
4#include "../PicoInt.h"
cc68a136 5
6
76276b0b 7extern unsigned char formatted_bram[4*0x10];
89fa852d 8extern unsigned int s68k_poll_adclk;
9
721cd396 10void (*PicoMCDopenTray)(void) = NULL;
11int (*PicoMCDcloseTray)(void) = NULL;
89fa852d 12
13#define dump_ram(ram,fname) \
14{ \
15 int i, d; \
16 FILE *f; \
17\
18 for (i = 0; i < sizeof(ram); i+=2) { \
19 d = (ram[i]<<8) | ram[i+1]; \
20 *(unsigned short *)(ram+i) = d; \
21 } \
22 f = fopen(fname, "wb"); \
23 if (f) { \
24 fwrite(ram, 1, sizeof(ram), f); \
25 fclose(f); \
26 } \
27 for (i = 0; i < sizeof(ram); i+=2) { \
28 d = (ram[i]<<8) | ram[i+1]; \
29 *(unsigned short *)(ram+i) = d; \
30 } \
31}
cc68a136 32
33
eff55556 34PICO_INTERNAL int PicoInitMCD(void)
cc68a136 35{
36 SekInitS68k();
37 Init_CD_Driver();
38
39 return 0;
40}
41
42
eff55556 43PICO_INTERNAL void PicoExitMCD(void)
cc68a136 44{
45 End_CD_Driver();
89fa852d 46
47 //dump_ram(Pico_mcd->prg_ram, "prg.bin");
48 //dump_ram(Pico.ram, "ram.bin");
cc68a136 49}
50
1cb1584b 51PICO_INTERNAL void PicoPowerMCD(void)
52{
53 int fmt_size = sizeof(formatted_bram);
54 memset(Pico_mcd->prg_ram, 0, sizeof(Pico_mcd->prg_ram));
55 memset(Pico_mcd->word_ram2M, 0, sizeof(Pico_mcd->word_ram2M));
56 memset(Pico_mcd->pcm_ram, 0, sizeof(Pico_mcd->pcm_ram));
57 memset(Pico_mcd->bram, 0, sizeof(Pico_mcd->bram));
58 memcpy(Pico_mcd->bram + sizeof(Pico_mcd->bram) - fmt_size, formatted_bram, fmt_size);
59}
60
61PICO_INTERNAL int PicoResetMCD(void)
cc68a136 62{
51a902ae 63 memset(Pico_mcd->s68k_regs, 0, sizeof(Pico_mcd->s68k_regs));
4f265db7 64 memset(&Pico_mcd->pcm, 0, sizeof(Pico_mcd->pcm));
5c69a605 65 memset(&Pico_mcd->m, 0, sizeof(Pico_mcd->m));
51a902ae 66
d1df8786 67 *(unsigned int *)(Pico_mcd->bios + 0x70) = 0xffffffff; // reset hint vector (simplest way to implement reg6)
c008977e 68 Pico_mcd->m.state_flags |= 1; // s68k reset pending
672ad671 69 Pico_mcd->s68k_regs[3] = 1; // 2M word RAM mode with m68k access after reset
cc68a136 70
cc68a136 71 Reset_CD();
5c69a605 72 LC89510_Reset();
51a902ae 73 gfx_cd_reset();
4ff2d527 74 PicoMemResetCD(1);
3aa1e148 75#ifdef _ASM_CD_MEMORY_C
00bd648e 76 //PicoMemResetCDdecode(1); // don't have to call this in 2M mode
4ff2d527 77#endif
cc68a136 78
6cadc2da 79 // use SRam.data for RAM cart
602133e1 80 if (PicoOpt&POPT_EN_MCD_RAMCART) {
d6114368 81 if (SRam.data == NULL)
82 SRam.data = calloc(1, 0x12000);
83 }
84 else if (SRam.data != NULL) {
85 free(SRam.data);
86 SRam.data = NULL;
87 }
b542be46 88 SRam.start = SRam.end = 0; // unused
6cadc2da 89
cc68a136 90 return 0;
91}
92
eff55556 93static __inline void SekRunM68k(int cyc)
cc68a136 94{
95 int cyc_do;
96 SekCycleAim+=cyc;
3ec29f01 97 if ((cyc_do=SekCycleAim-SekCycleCnt) <= 0) return;
b5e5172d 98#if defined(EMU_CORE_DEBUG)
99 SekCycleCnt+=CM_compareRun(cyc_do, 0);
100#elif defined(EMU_C68K)
3aa1e148 101 PicoCpuCM68k.cycles=cyc_do;
102 CycloneRun(&PicoCpuCM68k);
103 SekCycleCnt+=cyc_do-PicoCpuCM68k.cycles;
b837b69b 104#elif defined(EMU_M68K)
3aa1e148 105 m68k_set_context(&PicoCpuMM68k);
cc68a136 106 SekCycleCnt+=m68k_execute(cyc_do);
3aa1e148 107#elif defined(EMU_F68K)
108 g_m68kcontext=&PicoCpuFM68k;
8022f53d 109 SekCycleCnt+=fm68k_emulate(cyc_do, 0);
cc68a136 110#endif
111}
112
113static __inline void SekRunS68k(int cyc)
114{
115 int cyc_do;
116 SekCycleAimS68k+=cyc;
3ec29f01 117 if ((cyc_do=SekCycleAimS68k-SekCycleCntS68k) <= 0) return;
b5e5172d 118#if defined(EMU_CORE_DEBUG)
119 SekCycleCntS68k+=CM_compareRun(cyc_do, 1);
120#elif defined(EMU_C68K)
3aa1e148 121 PicoCpuCS68k.cycles=cyc_do;
122 CycloneRun(&PicoCpuCS68k);
123 SekCycleCntS68k+=cyc_do-PicoCpuCS68k.cycles;
b837b69b 124#elif defined(EMU_M68K)
3aa1e148 125 m68k_set_context(&PicoCpuMS68k);
cc68a136 126 SekCycleCntS68k+=m68k_execute(cyc_do);
3aa1e148 127#elif defined(EMU_F68K)
128 g_m68kcontext=&PicoCpuFS68k;
8022f53d 129 SekCycleCntS68k+=fm68k_emulate(cyc_do, 0);
cc68a136 130#endif
131}
132
7336a99a 133#define PS_STEP_M68K ((488<<16)/20) // ~24
134//#define PS_STEP_S68K 13
68cba51e 135
8022f53d 136#if defined(_ASM_CD_PICO_C)
137extern void SekRunPS(int cyc_m68k, int cyc_s68k);
138#elif defined(EMU_F68K)
139static __inline void SekRunPS(int cyc_m68k, int cyc_s68k)
140{
141 SekCycleAim+=cyc_m68k;
142 SekCycleAimS68k+=cyc_s68k;
143 fm68k_emulate(0, 1);
144}
a4030801 145#else
68cba51e 146static __inline void SekRunPS(int cyc_m68k, int cyc_s68k)
147{
7336a99a 148 int cycn, cycn_s68k, cyc_do;
68cba51e 149 SekCycleAim+=cyc_m68k;
150 SekCycleAimS68k+=cyc_s68k;
7336a99a 151
152// fprintf(stderr, "=== start %3i/%3i [%3i/%3i] {%05i.%i} ===\n", cyc_m68k, cyc_s68k,
153// SekCycleAim-SekCycleCnt, SekCycleAimS68k-SekCycleCntS68k, Pico.m.frame_count, Pico.m.scanline);
154
155 /* loop 488 downto 0 in steps of PS_STEP */
156 for (cycn = (488<<16)-PS_STEP_M68K; cycn >= 0; cycn -= PS_STEP_M68K)
157 {
7336a99a 158 cycn_s68k = (cycn + cycn/2 + cycn/8) >> 16;
7336a99a 159 if ((cyc_do = SekCycleAim-SekCycleCnt-(cycn>>16)) > 0) {
68cba51e 160#if defined(EMU_C68K)
3aa1e148 161 PicoCpuCM68k.cycles = cyc_do;
162 CycloneRun(&PicoCpuCM68k);
163 SekCycleCnt += cyc_do - PicoCpuCM68k.cycles;
68cba51e 164#elif defined(EMU_M68K)
3aa1e148 165 m68k_set_context(&PicoCpuMM68k);
166 SekCycleCnt += m68k_execute(cyc_do);
167#elif defined(EMU_F68K)
168 g_m68kcontext = &PicoCpuFM68k;
8022f53d 169 SekCycleCnt += fm68k_emulate(cyc_do, 0);
68cba51e 170#endif
7336a99a 171 }
7336a99a 172 if ((cyc_do = SekCycleAimS68k-SekCycleCntS68k-cycn_s68k) > 0) {
68cba51e 173#if defined(EMU_C68K)
3aa1e148 174 PicoCpuCS68k.cycles = cyc_do;
175 CycloneRun(&PicoCpuCS68k);
176 SekCycleCntS68k += cyc_do - PicoCpuCS68k.cycles;
68cba51e 177#elif defined(EMU_M68K)
3aa1e148 178 m68k_set_context(&PicoCpuMS68k);
179 SekCycleCntS68k += m68k_execute(cyc_do);
180#elif defined(EMU_F68K)
181 g_m68kcontext = &PicoCpuFS68k;
8022f53d 182 SekCycleCntS68k += fm68k_emulate(cyc_do, 0);
68cba51e 183#endif
7336a99a 184 }
68cba51e 185 }
68cba51e 186}
7336a99a 187#endif
68cba51e 188
189
bf098bc5 190static __inline void check_cd_dma(void)
191{
192 int ddx;
193
c459aefd 194 if (!(Pico_mcd->scd.Status_CDC & 0x08)) return;
bf098bc5 195
196 ddx = Pico_mcd->s68k_regs[4] & 7;
197 if (ddx < 2) return; // invalid
c459aefd 198 if (ddx < 4) {
199 Pico_mcd->s68k_regs[4] |= 0x40; // Data set ready in host port
200 return;
201 }
bf098bc5 202 if (ddx == 6) return; // invalid
203
204 Update_CDC_TRansfer(ddx); // now go and do the actual transfer
205}
206
4f265db7 207static __inline void update_chips(void)
208{
209 int counter_timer, int3_set;
210 int counter75hz_lim = Pico.m.pal ? 2080 : 2096;
211
212 // 75Hz CDC update
213 if ((Pico_mcd->m.counter75hz+=10) >= counter75hz_lim) {
214 Pico_mcd->m.counter75hz -= counter75hz_lim;
215 Check_CD_Command();
216 }
217
218 // update timers
219 counter_timer = Pico.m.pal ? 0x21630 : 0x2121c; // 136752 : 135708;
220 Pico_mcd->m.timer_stopwatch += counter_timer;
221 if ((int3_set = Pico_mcd->s68k_regs[0x31])) {
222 Pico_mcd->m.timer_int3 -= counter_timer;
223 if (Pico_mcd->m.timer_int3 < 0) {
224 if (Pico_mcd->s68k_regs[0x33] & (1<<3)) {
69996cb7 225 elprintf(EL_INTS, "s68k: timer irq 3");
4f265db7 226 SekInterruptS68k(3);
227 Pico_mcd->m.timer_int3 += int3_set << 16;
228 }
229 // is this really what happens if irq3 is masked out?
230 Pico_mcd->m.timer_int3 &= 0xffffff;
231 }
232 }
233
234 // update gfx chip
235 if (Pico_mcd->rot_comp.Reg_58 & 0x8000)
236 gfx_cd_update();
89fa852d 237
238 // delayed setting of DMNA bit (needed for Silpheed)
239 if (Pico_mcd->m.state_flags & 2) {
240 Pico_mcd->m.state_flags &= ~2;
46969540 241 if (!(Pico_mcd->s68k_regs[3] & 4)) {
242 Pico_mcd->s68k_regs[3] |= 2;
243 Pico_mcd->s68k_regs[3] &= ~1;
89fa852d 244#ifdef USE_POLL_DETECT
46969540 245 if ((s68k_poll_adclk&0xfe) == 2) {
246 SekSetStopS68k(0); s68k_poll_adclk = 0;
247 }
89fa852d 248#endif
46969540 249 }
89fa852d 250 }
4f265db7 251}
252
b837b69b 253
bf5fbbb4 254static __inline void getSamples(int y)
cc68a136 255{
9d917eea 256 int len = PsndRender(0, PsndLen);
bf5fbbb4 257 if (PicoWriteSound) PicoWriteSound(len);
258 // clear sound buffer
9d917eea 259 PsndClear();
bf5fbbb4 260}
cc68a136 261
cc68a136 262
bf5fbbb4 263#define PICO_CD
264#include "../PicoFrameHints.c"
cc68a136 265
266
eff55556 267PICO_INTERNAL int PicoFrameMCD(void)
cc68a136 268{
602133e1 269 if (!(PicoOpt&POPT_ALT_RENDERER))
cc68a136 270 PicoFrameStart();
271
bf5fbbb4 272 PicoFrameHints();
cc68a136 273
274 return 0;
275}
276
277