platform/psp/emu.c

   1 // (c) Copyright 2007 notaz, All rights reserved.
   2 // Free for non-commercial use.
   3
   4 // For commercial use, separate licencing terms must be obtained.
   5
   6 #include <sys/stat.h>
   7 #include <sys/types.h>
   8 #include <sys/syslimits.h> // PATH_MAX
   9
  10 #include <pspthreadman.h>
  11 #include <pspdisplay.h>
  12 #include <psputils.h>
  13 #include <pspgu.h>
  14 #include <pspaudio.h>
  15
  16 #include "psp.h"
  17 #include "menu.h"
  18 #include "emu.h"
  19 #include "mp3.h"
  20 #include "asm_utils.h"
  21 #include "../common/emu.h"
  22 #include "../common/config.h"
  23 #include "../common/lprintf.h"
  24 #include <pico/pico_int.h>
  25 #include <pico/cd/cue.h>
  26
  27 #define OSD_FPS_X 432
  28
  29 // additional pspaudio imports, credits to crazyc
  30 int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown);  // play with conversion?
  31 int sceAudio_5C37C0AE(void);                            // end play?
  32 int sceAudio_E0727056(int volume, void *buffer);        // blocking output
  33 int sceAudioOutput2GetRestSample();
  34
  35
  36 char romFileName[PATH_MAX];
  37 unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
  38 int engineState = PGS_Menu, engineStateSuspend;
  39
  40 static unsigned int noticeMsgTime = 0;
  41 int reset_timing = 0; // do we need this?
  42
  43 #define PICO_PEN_ADJUST_X 4
  44 #define PICO_PEN_ADJUST_Y 2
  45 static int pico_pen_x = 320/2, pico_pen_y = 240/2;
  46
  47 static void sound_init(void);
  48 static void sound_deinit(void);
  49 static void blit2(const char *fps, const char *notice, int lagging_behind);
  50 static void clearArea(int full);
  51
  52 void emu_noticeMsgUpdated(void)
  53 {
  54         noticeMsgTime = sceKernelGetSystemTimeLow();
  55 }
  56
  57 int emu_getMainDir(char *dst, int len)
  58 {
  59         if (len > 0) *dst = 0;
  60         return 0;
  61 }
  62
  63 static void osd_text(int x, const char *text, int is_active, int clear_all)
  64 {
  65         unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
  66         int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
  67         int *p, h;
  68         void *tmp;
  69         for (h = 0; h < 8; h++) {
  70                 p = (int *) (screen+x+512*(264+h));
  71                 p = (int *) ((int)p & ~3); // align
  72                 memset32_uncached(p, 0, len);
  73         }
  74         if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
  75         emu_textOut16(x, 264, text);
  76         if (is_active) psp_screen = tmp;
  77 }
  78
  79 void emu_msg_cb(const char *msg)
  80 {
  81         osd_text(4, msg, 1, 1);
  82         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
  83
  84         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
  85         reset_timing = 1;
  86 }
  87
  88 static void emu_msg_tray_open(void)
  89 {
  90         strcpy(noticeMsg, "CD tray opened");
  91         noticeMsgTime = sceKernelGetSystemTimeLow();
  92 }
  93
  94
  95 void emu_Init(void)
  96 {
  97         // make dirs for saves, cfgs, etc.
  98         mkdir("mds", 0777);
  99         mkdir("srm", 0777);
 100         mkdir("brm", 0777);
 101         mkdir("cfg", 0777);
 102
 103         sound_init();
 104
 105         PicoInit();
 106         PicoMessage = emu_msg_cb;
 107         PicoMCDopenTray = emu_msg_tray_open;
 108         PicoMCDcloseTray = menu_loop_tray;
 109 }
 110
 111 void emu_Deinit(void)
 112 {
 113         // save SRAM
 114         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
 115                 emu_SaveLoadGame(0, 1);
 116                 SRam.changed = 0;
 117         }
 118
 119         if (!(currentConfig.EmuOpt & 0x20))
 120                 config_writelrom(PicoConfigFile);
 121
 122         PicoExit();
 123         sound_deinit();
 124 }
 125
 126 void emu_prepareDefaultConfig(void)
 127 {
 128         memset(&defaultConfig, 0, sizeof(defaultConfig));
 129         defaultConfig.EmuOpt    = 0x1d | 0x680; // | <- confirm_save, cd_leds, acc rend
 130         defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX|POPT_ACC_SPRITES;
 131         defaultConfig.s_PsndRate = 22050;
 132         defaultConfig.s_PicoRegion = 0; // auto
 133         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
 134         defaultConfig.s_PicoCDBuffers = 64;
 135         defaultConfig.Frameskip = -1; // auto
 136         defaultConfig.CPUclock = 333;
 137         defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 138         defaultConfig.KeyBinds[ 6] = 1<<1;
 139         defaultConfig.KeyBinds[ 7] = 1<<2;
 140         defaultConfig.KeyBinds[ 5] = 1<<3;
 141         defaultConfig.KeyBinds[14] = 1<<4;
 142         defaultConfig.KeyBinds[13] = 1<<5;
 143         defaultConfig.KeyBinds[15] = 1<<6;
 144         defaultConfig.KeyBinds[ 3] = 1<<7;
 145         defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
 146         defaultConfig.KeyBinds[ 8] = 1<<27; // save state
 147         defaultConfig.KeyBinds[ 9] = 1<<28; // load state
 148         defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
 149         defaultConfig.KeyBinds[30] = 1<<1;
 150         defaultConfig.KeyBinds[31] = 1<<2;
 151         defaultConfig.KeyBinds[29] = 1<<3;
 152         defaultConfig.scaling = 1;     // bilinear filtering for psp
 153         defaultConfig.scale = 1.20;    // fullscreen
 154         defaultConfig.hscale40 = 1.25;
 155         defaultConfig.hscale32 = 1.56;
 156         defaultConfig.turbo_rate = 15;
 157 }
 158
 159
 160 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 161 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 162
 163 static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
 164
 165 struct Vertex
 166 {
 167         short u,v;
 168         short x,y,z;
 169 };
 170
 171 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 172 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 173 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 174 static int fbimg_offs = 0;
 175
 176 static void set_scaling_params(void)
 177 {
 178         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
 179         g_vertices[0].x = g_vertices[0].y =
 180         g_vertices[0].z = g_vertices[1].z = 0;
 181
 182         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 183         if (Pico.video.reg[12] & 1) {
 184                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 185                 src_width = 320;
 186         } else {
 187                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 188                 src_width = 256;
 189         }
 190
 191         if (fbimg_width  & 1) fbimg_width++;  // make even
 192         if (fbimg_height & 1) fbimg_height++;
 193
 194         if (fbimg_width >= 480) {
 195                 g_vertices[0].u = (fbimg_width-480)/2;
 196                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
 197                 fbimg_width = 480;
 198                 fbimg_xoffs = 0;
 199         } else {
 200                 g_vertices[0].u = 0;
 201                 g_vertices[1].u = src_width;
 202                 fbimg_xoffs = 240 - fbimg_width/2;
 203         }
 204         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
 205
 206         if (fbimg_height >= 272) {
 207                 g_vertices[0].v = (fbimg_height-272)/2;
 208                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 209                 fbimg_height = 272;
 210                 fbimg_yoffs = 0;
 211         } else {
 212                 g_vertices[0].v = 0;
 213                 g_vertices[1].v = 240;
 214                 fbimg_yoffs = 136 - fbimg_height/2;
 215         }
 216
 217         g_vertices[1].x = fbimg_width;
 218         g_vertices[1].y = fbimg_height;
 219         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 220         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 221         if (border_hack) {
 222                 g_vertices[0].u++;
 223                 g_vertices[0].x++;
 224                 g_vertices[1].u--;
 225                 g_vertices[1].x--;
 226         }
 227         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 228
 229         /*
 230         lprintf("set_scaling_params:\n");
 231         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 232         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 233         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 234         */
 235 }
 236
 237 static void do_pal_update(int allow_sh, int allow_as)
 238 {
 239         unsigned int *dpal=(void *)localPal;
 240         int i;
 241
 242         //for (i = 0x3f/2; i >= 0; i--)
 243         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 244         do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
 245
 246         Pico.m.dirtyPal = 0;
 247         need_pal_upload = 1;
 248
 249         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 250         {
 251                 // shadowed pixels
 252                 for (i = 0x3f/2; i >= 0; i--)
 253                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
 254                 // hilighted pixels
 255                 for (i = 0x3f; i >= 0; i--) {
 256                         int t=localPal[i]&0xf79e;t+=0x4208;
 257                         if (t&0x20) t|=0x1e;
 258                         if (t&0x800) t|=0x780;
 259                         if (t&0x10000) t|=0xf000;
 260                         t&=0xf79e;
 261                         localPal[0x80|i]=(unsigned short)t;
 262                 }
 263                 localPal[0xe0] = 0;
 264                 localPal[0xf0] = 0x001f;
 265         }
 266         else if (allow_as && (rendstatus & PDRAW_SPR_LO_ON_HI))
 267         {
 268                 memcpy32((int *)dpal+0x80/2, (void *)localPal, 0x40*2/4);
 269         }
 270 }
 271
 272 static void do_slowmode_lines(int line_to)
 273 {
 274         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 275         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 276         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 277         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 278
 279         for (; line < line_to; line++, dst+=512, src+=512)
 280                 amips_clut_f(dst, src, localPal, line_len);
 281 }
 282
 283 static void EmuScanPrepare(void)
 284 {
 285         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 286         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 287
 288         if (dynamic_palette > 0)
 289                 dynamic_palette--;
 290
 291         if (Pico.m.dirtyPal)
 292                 do_pal_update(1, 1);
 293         if ((rendstatus & PDRAW_SPR_LO_ON_HI) && !(Pico.video.reg[0xC]&8))
 294              amips_clut_f = amips_clut_6bit;
 295         else amips_clut_f = amips_clut;
 296 }
 297
 298 static int EmuScanSlowBegin(unsigned int num)
 299 {
 300         if (!(Pico.video.reg[1]&8)) num += 8;
 301
 302         if (!dynamic_palette)
 303                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
 304
 305         return 0;
 306 }
 307
 308 static int EmuScanSlowEnd(unsigned int num)
 309 {
 310         if (!(Pico.video.reg[1]&8)) num += 8;
 311
 312         if (Pico.m.dirtyPal) {
 313                 if (!dynamic_palette) {
 314                         do_slowmode_lines(num);
 315                         dynamic_palette = 3; // last for 2 more frames
 316                 }
 317                 do_pal_update(1, 1);
 318         }
 319
 320         if (dynamic_palette) {
 321                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 322                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 323                 amips_clut_f(dst, HighCol + 8, localPal, line_len);
 324         }
 325
 326         return 0;
 327 }
 328
 329 static void blitscreen_clut(void)
 330 {
 331         int offs = fbimg_offs;
 332         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 333
 334         sceGuSync(0,0); // sync with prev
 335         sceGuStart(GU_DIRECT, guCmdList);
 336         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 337
 338         if (dynamic_palette)
 339         {
 340                 if (!blit_16bit_mode) { // the current mode is not 16bit
 341                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 342                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 343
 344                         blit_16bit_mode = 1;
 345                 }
 346         }
 347         else
 348         {
 349                 if (blit_16bit_mode) {
 350                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 351                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 352                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 353                         blit_16bit_mode = 0;
 354                 }
 355
 356                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 357                         do_pal_update(0, 0);
 358
 359                 sceKernelDcacheWritebackAll();
 360
 361                 if (need_pal_upload) {
 362                         need_pal_upload = 0;
 363                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 364                 }
 365         }
 366
 367 #if 1
 368         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 369         {
 370                 struct Vertex* vertices;
 371                 int x;
 372
 373                 #define SLICE_WIDTH 32
 374                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 375                 {
 376                         // render sprite
 377                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 378                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 379                         vertices[0].u = vertices[0].x = x;
 380                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 381                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 382                 }
 383                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 384         }
 385         else
 386 #endif
 387                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 388
 389         sceGuFinish();
 390 }
 391
 392
 393 static void cd_leds(void)
 394 {
 395         unsigned int reg, col_g, col_r, *p;
 396
 397         reg = Pico_mcd->s68k_regs[0];
 398
 399         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 400         col_g = (reg & 2) ? 0x06000600 : 0;
 401         col_r = (reg & 1) ? 0x00180018 : 0;
 402         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 403         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 404         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 405 }
 406
 407 static void draw_pico_ptr(void)
 408 {
 409         unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
 410
 411         // only if pen enabled and for 8bit mode
 412         if (pico_inp_mode == 0 || blit_16bit_mode) return;
 413
 414         p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
 415         p += pico_pen_x + PICO_PEN_ADJUST_X;
 416         p[  -1] = 0xe0; p[   0] = 0xf0; p[   1] = 0xe0;
 417         p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
 418         p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
 419 }
 420
 421
 422 #if 0
 423 static void dbg_text(void)
 424 {
 425         int *p, h, len;
 426         char text[128];
 427
 428         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 429         len = strlen(text) * 8 / 2;
 430         for (h = 0; h < 8; h++) {
 431                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 432                 p = (int *) ((int)p & ~3); // align
 433                 memset32_uncached(p, 0, len);
 434         }
 435         emu_textOut16(2, 256, text);
 436 }
 437 #endif
 438
 439 /* called after rendering is done, but frame emulation is not finished */
 440 void blit1(void)
 441 {
 442         if (PicoOpt&0x10)
 443         {
 444                 int i;
 445                 unsigned char *pd;
 446                 // clear top and bottom trash
 447                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 448                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 449                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 450                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 451         }
 452
 453         if (PicoAHW & PAHW_PICO)
 454                 draw_pico_ptr();
 455
 456         blitscreen_clut();
 457 }
 458
 459
 460 static void blit2(const char *fps, const char *notice, int lagging_behind)
 461 {
 462         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 463
 464         if (notice || (emu_opt & 2)) {
 465                 if (notice)      osd_text(4, notice, 0, 0);
 466                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
 467         }
 468
 469         //dbg_text();
 470
 471         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
 472                 cd_leds();
 473
 474         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 475                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 476         }
 477
 478         psp_video_flip(vsync);
 479 }
 480
 481 // clears whole screen or just the notice area (in all buffers)
 482 static void clearArea(int full)
 483 {
 484         if (full) {
 485                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 486                 psp_video_flip(0);
 487                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 488                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 489                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 490         } else {
 491                 void *fb = psp_video_get_active_fb();
 492                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 493                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 494         }
 495 }
 496
 497 static void vidResetMode(void)
 498 {
 499         // setup GU
 500         sceGuSync(0,0); // sync with prev
 501         sceGuStart(GU_DIRECT, guCmdList);
 502
 503         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 504         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 505         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 506         if (currentConfig.scaling)
 507              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 508         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 509         sceGuTexScale(1.0f,1.0f);
 510         sceGuTexOffset(0.0f,0.0f);
 511
 512         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 513
 514         // slow rend.
 515         PicoDrawSetColorFormat(-1);
 516         PicoScanBegin = EmuScanSlowBegin;
 517         PicoScanEnd = EmuScanSlowEnd;
 518
 519         localPal[0xe0] = 0;
 520         localPal[0xf0] = 0x001f;
 521         Pico.m.dirtyPal = 1;
 522         blit_16bit_mode = dynamic_palette = 0;
 523
 524         sceGuFinish();
 525         set_scaling_params();
 526         sceGuSync(0,0);
 527 }
 528
 529 void emu_platformDebugCat(char *str)
 530 {
 531         strcat(str, blit_16bit_mode ? "soft clut\n" : "hard clut\n");
 532 }
 533
 534
 535 /* sound stuff */
 536 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 537 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 538 #define SOUND_BLOCK_COUNT    8
 539
 540 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 541 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 542 static int samples_made = 0, samples_done = 0, samples_block = 0;
 543 static int sound_thread_exit = 0;
 544 static SceUID sound_sem = -1;
 545
 546 static void writeSound(int len);
 547
 548 static int sound_thread(SceSize args, void *argp)
 549 {
 550         int ret = 0;
 551
 552         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 553
 554         while (!sound_thread_exit)
 555         {
 556                 if (samples_made - samples_done < samples_block) {
 557                         // wait for data (use at least 2 blocks)
 558                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 559                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 560                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 561                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 562                         continue;
 563                 }
 564
 565                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
 566
 567                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 568
 569                 samples_done += samples_block;
 570                 snd_playptr  += samples_block;
 571                 if (snd_playptr >= sndBuffer_endptr)
 572                         snd_playptr = sndBuffer;
 573                 // 1.5 kernel returns 0, newer ones return # of samples queued
 574                 if (ret < 0)
 575                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
 576
 577                 // shouln't happen, but just in case
 578                 if (samples_made - samples_done >= samples_block*3) {
 579                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
 580                         samples_done += samples_block; // skip
 581                         snd_playptr  += samples_block;
 582                 }
 583
 584         }
 585
 586         lprintf("sthr: exit\n");
 587         sceKernelExitDeleteThread(0);
 588         return 0;
 589 }
 590
 591 static void sound_init(void)
 592 {
 593         SceUID thid;
 594         int ret;
 595
 596         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 597         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 598
 599         samples_made = samples_done = 0;
 600         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 601         sound_thread_exit = 0;
 602         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 603         if (thid >= 0)
 604         {
 605                 ret = sceKernelStartThread(thid, 0, 0);
 606                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
 607         }
 608         else
 609                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 610 }
 611
 612 void emu_startSound(void)
 613 {
 614         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 615         int ret, stereo;
 616
 617         samples_made = samples_done = 0;
 618
 619         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 620                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 621         }
 622         stereo=(PicoOpt&8)>>3;
 623
 624         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 625         if (PsndRate <= 22050) samples_block /= 2;
 626         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 627
 628         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 629                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 630
 631         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 632         // sceAudio_5C37C0AE();
 633         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 634         if (ret < 0) {
 635                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 636                 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
 637                 noticeMsgTime = sceKernelGetSystemTimeLow();
 638                 currentConfig.EmuOpt &= ~4;
 639         } else {
 640                 PicoWriteSound = writeSound;
 641                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 642                 snd_playptr = sndBuffer_endptr - samples_block;
 643                 samples_made = samples_block; // send 1 empty block first..
 644                 PsndOut = sndBuffer;
 645                 PsndRate_old = PsndRate;
 646                 PicoOpt_old  = PicoOpt;
 647                 pal_old = Pico.m.pal;
 648         }
 649 }
 650
 651 void emu_endSound(void)
 652 {
 653         int i;
 654         if (samples_done == 0)
 655         {
 656                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
 657                 // we get a deadlock on next sceAudio_38553111 call
 658                 // so this is yet another workaround:
 659                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
 660                 samples_made = samples_block * 3;
 661                 sceKernelSignalSema(sound_sem, 1);
 662         }
 663         sceKernelDelayThread(100*1000);
 664         samples_made = samples_done = 0;
 665         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
 666                 psp_msleep(100);
 667         sceAudio_5C37C0AE();
 668 }
 669
 670 /* wait until we can write more sound */
 671 void emu_waitSound(void)
 672 {
 673         // TODO: test this
 674         while (!sound_thread_exit && samples_made - samples_done > samples_block * 4)
 675                 psp_msleep(10);
 676 }
 677
 678 static void sound_deinit(void)
 679 {
 680         sound_thread_exit = 1;
 681         sceKernelSignalSema(sound_sem, 1);
 682         sceKernelDeleteSema(sound_sem);
 683         sound_sem = -1;
 684 }
 685
 686 static void writeSound(int len)
 687 {
 688         int ret;
 689         if (PicoOpt&8) len<<=1;
 690
 691         PsndOut += len;
 692         /*if (PsndOut > sndBuffer_endptr) {
 693                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 694                 PsndOut = &sndBuffer[PsndOut - endptr];
 695                 lprintf("mov\n");
 696         }
 697         else*/
 698         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
 699         if (PsndOut >= sndBuffer_endptr)
 700                 PsndOut = sndBuffer;
 701
 702         // signal the snd thread
 703         samples_made += len;
 704         if (samples_made - samples_done > samples_block*2) {
 705                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 706                 ret = sceKernelSignalSema(sound_sem, 1);
 707                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
 708         }
 709 }
 710
 711
 712 static void SkipFrame(void)
 713 {
 714         PicoSkipFrame=1;
 715         PicoFrame();
 716         PicoSkipFrame=0;
 717 }
 718
 719 void emu_forcedFrame(int opts)
 720 {
 721         int po_old = PicoOpt;
 722         int eo_old = currentConfig.EmuOpt;
 723
 724         PicoOpt &= ~0x10;
 725         PicoOpt |= opts|POPT_ACC_SPRITES;
 726         currentConfig.EmuOpt |= 0x80;
 727
 728         vidResetMode();
 729         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 730         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 731         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 732
 733         PicoDrawSetColorFormat(-1);
 734         PicoScanBegin = EmuScanSlowBegin;
 735         PicoScanEnd = EmuScanSlowEnd;
 736         EmuScanPrepare();
 737         PicoFrameDrawOnly();
 738         blit1();
 739         sceGuSync(0,0);
 740
 741         PicoOpt = po_old;
 742         currentConfig.EmuOpt = eo_old;
 743 }
 744
 745
 746 static void RunEventsPico(unsigned int events, unsigned int keys)
 747 {
 748         emu_RunEventsPico(events);
 749
 750         if (pico_inp_mode != 0)
 751         {
 752                 PicoPad[0] &= ~0x0f; // release UDLR
 753                 if (keys & PBTN_UP)   { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
 754                 if (keys & PBTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
 755                 if (keys & PBTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
 756                 if (keys & PBTN_RIGHT) {
 757                         int lim = (Pico.video.reg[12]&1) ? 319 : 255;
 758                         pico_pen_x++;
 759                         if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
 760                                 pico_pen_x = lim-PICO_PEN_ADJUST_X;
 761                 }
 762                 PicoPicohw.pen_pos[0] = pico_pen_x;
 763                 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
 764                 PicoPicohw.pen_pos[0] += 0x3c;
 765                 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
 766         }
 767 }
 768
 769 static void RunEvents(unsigned int which)
 770 {
 771         if (which & 0x1800) // save or load (but not both)
 772         {
 773                 int do_it = 1;
 774
 775                 if ( emu_checkSaveFile(state_slot) &&
 776                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 777                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 778                 {
 779                         int keys;
 780                         sceGuSync(0,0);
 781                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 782                         while( !((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) )
 783                                 psp_msleep(50);
 784                         if (keys & PBTN_CIRCLE) do_it = 0;
 785                         while(  ((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) ) // wait for release
 786                                 psp_msleep(50);
 787                         clearArea(0);
 788                 }
 789
 790                 if (do_it)
 791                 {
 792                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
 793                         PicoStateProgressCB = emu_msg_cb;
 794                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);
 795                         PicoStateProgressCB = NULL;
 796                         psp_msleep(0);
 797                 }
 798
 799                 reset_timing = 1;
 800         }
 801         if (which & 0x0400) // switch renderer
 802         {
 803                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 804                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 805
 806                 vidResetMode();
 807
 808                 if (PicoOpt&0x10)
 809                         strcpy(noticeMsg, "fast renderer");
 810                 else if (currentConfig.EmuOpt&0x80)
 811                         strcpy(noticeMsg, "accurate renderer");
 812
 813                 noticeMsgTime = sceKernelGetSystemTimeLow();
 814         }
 815         if (which & 0x0300)
 816         {
 817                 if(which&0x0200) {
 818                         state_slot -= 1;
 819                         if(state_slot < 0) state_slot = 9;
 820                 } else {
 821                         state_slot += 1;
 822                         if(state_slot > 9) state_slot = 0;
 823                 }
 824                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
 825                 noticeMsgTime = sceKernelGetSystemTimeLow();
 826         }
 827 }
 828
 829 static void updateKeys(void)
 830 {
 831         unsigned int keys, allActions[2] = { 0, 0 }, events;
 832         static unsigned int prevEvents = 0;
 833         int i;
 834
 835         keys = psp_pad_read(0);
 836         if (keys & PSP_CTRL_HOME)
 837                 sceDisplayWaitVblankStart();
 838
 839         if (keys & PBTN_SELECT)
 840                 engineState = PGS_Menu;
 841
 842         keys &= CONFIGURABLE_KEYS;
 843
 844         for (i = 0; i < 32; i++)
 845         {
 846                 if (keys & (1 << i))
 847                 {
 848                         int pl, acts = currentConfig.KeyBinds[i];
 849                         if (!acts) continue;
 850                         pl = (acts >> 16) & 1;
 851                         if (kb_combo_keys & (1 << i))
 852                         {
 853                                 int u = i+1, acts_c = acts & kb_combo_acts;
 854                                 // let's try to find the other one
 855                                 if (acts_c) {
 856                                         for (; u < 32; u++)
 857                                                 if ( (keys & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {
 858                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];
 859                                                         keys &= ~((1 << i) | (1 << u));
 860                                                         break;
 861                                                 }
 862                                 }
 863                                 // add non-combo actions if combo ones were not found
 864                                 if (!acts_c || u == 32)
 865                                         allActions[pl] |= acts & ~kb_combo_acts;
 866                         } else {
 867                                 allActions[pl] |= acts;
 868                         }
 869                 }
 870         }
 871
 872         PicoPad[0] = allActions[0] & 0xfff;
 873         PicoPad[1] = allActions[1] & 0xfff;
 874
 875         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
 876         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
 877
 878         events = (allActions[0] | allActions[1]) >> 16;
 879
 880         if ((events ^ prevEvents) & 0x40) {
 881                 emu_changeFastForward(events & 0x40);
 882                 reset_timing = 1;
 883         }
 884
 885         events &= ~prevEvents;
 886
 887         if (PicoAHW == PAHW_PICO)
 888                 RunEventsPico(events, keys);
 889         if (events) RunEvents(events);
 890         if (movie_data) emu_updateMovie();
 891
 892         prevEvents = (allActions[0] | allActions[1]) >> 16;
 893 }
 894
 895
 896 static void simpleWait(unsigned int until)
 897 {
 898         unsigned int tval;
 899         int diff;
 900
 901         tval = sceKernelGetSystemTimeLow();
 902         diff = (int)until - (int)tval;
 903         if (diff >= 512 && diff < 100*1024)
 904                 sceKernelDelayThread(diff);
 905 }
 906
 907 void emu_Loop(void)
 908 {
 909         static int mp3_init_done = 0;
 910         char fpsbuff[24]; // fps count c string
 911         unsigned int tval, tval_thissec = 0; // timing
 912         int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
 913         int pframes_done, pframes_shown; // "period" frames, used for sync
 914         int  frames_done,  frames_shown, tval_fpsc = 0; // actual frames
 915         char *notice = NULL;
 916
 917         lprintf("entered emu_Loop()\n");
 918
 919         fpsbuff[0] = 0;
 920
 921         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 922                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 923                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 924                 lprintf(i ? "failed\n" : "done\n");
 925                 currentConfig.CPUclock = psp_get_cpu_clock();
 926         }
 927
 928         // make sure we are in correct mode
 929         vidResetMode();
 930         clearArea(1);
 931         Pico.m.dirtyPal = 1;
 932         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 933         emu_findKeyBindCombos();
 934
 935         // pal/ntsc might have changed, reset related stuff
 936         target_fps = Pico.m.pal ? 50 : 60;
 937         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 938         reset_timing = 1;
 939
 940         if (PicoAHW & PAHW_MCD) {
 941                 // prepare CD buffer
 942                 PicoCDBufferInit();
 943                 // mp3...
 944                 if (!mp3_init_done) {
 945                         i = mp3_init();
 946                         mp3_init_done = 1;
 947                         if (i) { engineState = PGS_Menu; return; }
 948                 }
 949         }
 950
 951         // prepare sound stuff
 952         PsndOut = NULL;
 953         if (currentConfig.EmuOpt & 4)
 954         {
 955                 emu_startSound();
 956         }
 957
 958         sceDisplayWaitVblankStart();
 959         pframes_shown = pframes_done =
 960          frames_shown =  frames_done = 0;
 961
 962         tval_fpsc = sceKernelGetSystemTimeLow();
 963
 964         // loop?
 965         while (engineState == PGS_Running)
 966         {
 967                 int modes;
 968
 969                 tval = sceKernelGetSystemTimeLow();
 970                 if (reset_timing || tval < tval_fpsc) {
 971                         //stdbg("timing reset");
 972                         reset_timing = 0;
 973                         tval_thissec = tval;
 974                         pframes_shown = pframes_done = 0;
 975                 }
 976
 977                 // show notice message?
 978                 if (noticeMsgTime) {
 979                         static int noticeMsgSum;
 980                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 981                                 noticeMsgTime = 0;
 982                                 clearArea(0);
 983                                 notice = 0;
 984                         } else {
 985                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 986                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 987                                 notice = noticeMsg;
 988                         }
 989                 }
 990
 991                 // check for mode changes
 992                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 993                 if (modes != oldmodes) {
 994                         oldmodes = modes;
 995                         clearArea(1);
 996                         set_scaling_params();
 997                 }
 998
 999                 // second passed?
1000                 if (tval - tval_fpsc >= 1000000)
1001                 {
1002                         if (currentConfig.EmuOpt & 2)
1003                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
1004                         frames_done = frames_shown = 0;
1005                         tval_fpsc += 1000000;
1006                 }
1007
1008                 if (tval - tval_thissec >= 1000000)
1009                 {
1010                         // missing 1 frame?
1011                         if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
1012                                 SkipFrame(); pframes_done++; frames_done++;
1013                         }
1014
1015                         tval_thissec += 1000000;
1016
1017                         if (currentConfig.Frameskip < 0) {
1018                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;
1019                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
1020                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
1021                         } else {
1022                                 pframes_done = pframes_shown = 0;
1023                         }
1024                 }
1025 #ifdef PFRAMES
1026                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
1027 #endif
1028
1029                 lim_time = (pframes_done+1) * target_frametime;
1030                 if (currentConfig.Frameskip >= 0) // frameskip enabled
1031                 {
1032                         for (i = 0; i < currentConfig.Frameskip; i++) {
1033                                 updateKeys();
1034                                 SkipFrame(); pframes_done++; frames_done++;
1035                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
1036                                         int tval_diff;
1037                                         tval = sceKernelGetSystemTimeLow();
1038                                         tval_diff = (int)(tval - tval_thissec) << 8;
1039                                         if (tval_diff < lim_time) // we are too fast
1040                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
1041                                 }
1042                                 lim_time += target_frametime;
1043                         }
1044                 }
1045                 else // auto frameskip
1046                 {
1047                         int tval_diff;
1048                         tval = sceKernelGetSystemTimeLow();
1049                         tval_diff = (int)(tval - tval_thissec) << 8;
1050                         if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
1051                         {
1052                                 // no time left for this frame - skip
1053                                 if (tval_diff - lim_time >= (300000<<8)) {
1054                                         reset_timing = 1;
1055                                         continue;
1056                                 }
1057                                 updateKeys();
1058                                 SkipFrame(); pframes_done++; frames_done++;
1059                                 continue;
1060                         }
1061                 }
1062
1063                 updateKeys();
1064
1065                 if (!(PicoOpt&0x10))
1066                         EmuScanPrepare();
1067
1068                 PicoFrame();
1069
1070                 sceGuSync(0,0);
1071
1072                 // check time
1073                 tval = sceKernelGetSystemTimeLow();
1074                 tval_diff = (int)(tval - tval_thissec) << 8;
1075
1076                 blit2(fpsbuff, notice, tval_diff > lim_time);
1077
1078                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1079                         reset_timing = 1;
1080                 }
1081                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1082                 {
1083                         // sleep if we are still too fast
1084                         if (tval_diff < lim_time)
1085                         {
1086                                 // we are too fast
1087                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1088                         }
1089                 }
1090
1091                 pframes_done++; pframes_shown++;
1092                  frames_done++;  frames_shown++;
1093         }
1094
1095
1096         emu_changeFastForward(0);
1097
1098         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1099
1100         if (PsndOut != NULL) {
1101                 emu_endSound();
1102                 PsndOut = NULL;
1103         }
1104
1105         // save SRAM
1106         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1107                 emu_msg_cb("Writing SRAM/BRAM..");
1108                 emu_SaveLoadGame(0, 1);
1109                 SRam.changed = 0;
1110         }
1111
1112         // clear fps counters and stuff
1113         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1114 }
1115
1116
1117 void emu_ResetGame(void)
1118 {
1119         PicoReset();
1120         reset_timing = 1;
1121 }
1122
1123 void emu_HandleResume(void)
1124 {
1125         if (!(PicoAHW & PAHW_MCD)) return;
1126
1127         // reopen first CD track
1128         if (Pico_mcd->TOC.Tracks[0].F != NULL)
1129         {
1130                 char *fname = romFileName;
1131                 int len = strlen(romFileName);
1132                 cue_data_t *cue_data = NULL;
1133
1134                 if (len > 4 && strcasecmp(fname + len - 4,  ".cue") == 0)
1135                 {
1136                         cue_data = cue_parse(romFileName);
1137                         if (cue_data != NULL)
1138                                 fname = cue_data->tracks[1].fname;
1139                 }
1140
1141                 lprintf("emu_HandleResume: reopen %s\n", fname);
1142                 pm_close(Pico_mcd->TOC.Tracks[0].F);
1143                 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1144                 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1145
1146                 if (cue_data != NULL) cue_destroy(cue_data);
1147         }
1148
1149         mp3_reopen_file();
1150
1151         if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1152                 cdda_start_play();
1153 }
1154