1 // (c) Copyright 2006-2009 notaz, All rights reserved.
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2 // Free for non-commercial use.
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4 // For commercial use, separate licencing terms must be obtained.
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9 #include "../common/emu.h"
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10 #include "../common/menu.h"
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11 #include "../common/plat.h"
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12 #include "../common/arm_utils.h"
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13 #include "../linux/sndout_oss.h"
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14 #include "../linux/fbdev.h"
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15 #include "asm_utils.h"
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16 #include "version.h"
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18 #include <pico/pico_int.h>
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20 //#define USE_320_SCREEN 1
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23 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
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24 static unsigned char temp_frame[g_screen_width * g_screen_height * 2];
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25 unsigned char *PicoDraw2FB = temp_frame;
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26 char cpu_clk_name[] = "unused";
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29 void pemu_prep_defconfig(void)
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31 // XXX: move elsewhere
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32 g_menubg_ptr = temp_frame;
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34 defaultConfig.EmuOpt |= EOPT_VSYNC;
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37 void pemu_validate_config(void)
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42 static void osd_text(int x, int y, const char *text)
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44 int len = strlen(text)*8;
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46 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
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50 for (h = 0; h < 8; h++) {
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51 p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));
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52 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;
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54 emu_text_out8(x, y, text);
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59 for (h = 0; h < 16; h++) {
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60 p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));
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61 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;
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63 text_out16(x, y, text);
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67 static void draw_cd_leds(void)
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71 // if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?
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72 old_reg = Pico_mcd->s68k_regs[0];
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74 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {
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76 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
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77 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
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78 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =
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79 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =
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80 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;
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81 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =
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82 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =
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83 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;
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86 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);
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87 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;
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88 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;
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89 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
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90 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
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91 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
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95 #ifdef USE_320_SCREEN
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97 static int EmuScanBegin16(unsigned int num)
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99 DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;
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100 //int w = (Pico.video.reg[12]&1) ? 320 : 256;
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101 //DrawLineDest = (unsigned short *)g_screen_ptr + num*w;
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106 #else // USE_320_SCREEN
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108 static int EmuScanEnd16(unsigned int num)
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110 unsigned char *ps=HighCol+8;
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111 unsigned short *pd;
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112 unsigned short *pal=HighPal;
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113 int sh = Pico.video.reg[0xC]&8;
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114 int len, mask = 0xff;
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116 pd=(unsigned short *)g_screen_ptr + num*800*2 + 800/2 - 320*2/2;
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118 if (Pico.m.dirtyPal)
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119 PicoDoHighPal555(sh);
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121 if (Pico.video.reg[12]&1) {
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128 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
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129 mask=0x3f; // messed sprites, upper bits are priority stuff
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132 clut_line(pd, ps, pal, (mask<<16) | len);
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134 for (; len > 0; len--)
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136 unsigned int p = pal[*ps++ & mask];
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138 *(unsigned int *)pd = p;
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139 *(unsigned int *)(&pd[800]) = p;
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147 static int EmuScanEnd16_32x(unsigned int num)
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153 ps = (unsigned int *)temp_frame;
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154 pd = (unsigned int *)g_screen_ptr + (num*800*2 + 800/2 - 320*2/2) / 2;
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156 for (len = 320/2; len > 0; len--, ps++) {
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157 unsigned int p, p1;
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161 *pd = pd[800/2] = p;
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166 *pd = pd[800/2] = p;
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172 #endif // USE_320_SCREEN
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174 void pemu_finalize_frame(const char *fps, const char *notice)
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176 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {
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178 osd_text(4, 464, notice);
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179 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)
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180 osd_text(640, 464, fps);
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182 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))
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186 void plat_video_toggle_renderer(int is_next, int force_16bpp, int is_menu)
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188 // this will auto-select SMS/32X renderers
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189 PicoDrawSetColorFormat(1);
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192 void plat_video_menu_enter(int is_rom_loaded)
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196 void plat_video_menu_begin(void)
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198 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);
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201 void plat_video_menu_end(void)
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206 void plat_status_msg_clear(void)
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208 int s = g_screen_width * g_screen_height * 2;
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209 int l = g_screen_width * 16 * 2;
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212 for (i = 0; i < fbdev_buffer_count; i++)
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213 memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);
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216 void plat_status_msg_busy_next(const char *msg)
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218 plat_status_msg_clear();
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219 pemu_finalize_frame("", msg);
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221 emu_status_msg("");
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225 void plat_status_msg_busy_first(const char *msg)
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227 // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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228 plat_status_msg_busy_next(msg);
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231 void plat_update_volume(int has_changed, int is_up)
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233 static int prev_frame = 0, wait_frames = 0;
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234 int vol = currentConfig.volume;
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239 if (vol < 99) vol++;
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241 if (vol > 0) vol--;
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244 sndout_oss_setvol(vol, vol);
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245 currentConfig.volume = vol;
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246 emu_status_msg("VOL: %02i", vol);
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247 prev_frame = Pico.m.frame_count;
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251 void pemu_forced_frame(int opts)
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253 int po_old = PicoOpt;
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254 int eo_old = currentConfig.EmuOpt;
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257 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites
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258 currentConfig.EmuOpt |= 0x80;
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260 Pico.m.dirtyPal = 1;
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261 PicoFrameDrawOnly();
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264 currentConfig.EmuOpt = eo_old;
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267 static void updateSound(int len)
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272 if (PicoOpt & POPT_EN_STEREO)
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275 // sndout_oss_can_write() not reliable..
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276 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
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279 /* avoid writing audio when lagging behind to prevent audio lag */
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280 if (PicoSkipFrame == 2)
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283 t = plat_get_ticks_ms();
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284 sndout_oss_write(PsndOut, len);
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285 t = plat_get_ticks_ms() - t;
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287 printf("audio lag %u\n", t);
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290 void pemu_sound_start(void)
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292 int target_fps = Pico.m.pal ? 50 : 60;
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296 if (currentConfig.EmuOpt & EOPT_EN_SOUND)
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298 int snd_excess_add, frame_samples;
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299 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
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301 PsndRerate(Pico.m.frame_count ? 1 : 0);
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303 frame_samples = PsndLen;
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304 snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;
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305 if (snd_excess_add != 0)
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308 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
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309 PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);
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310 sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);
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311 //sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
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312 PicoWriteSound = updateSound;
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313 plat_update_volume(0, 0);
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314 memset(sndBuffer, 0, sizeof(sndBuffer));
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315 PsndOut = sndBuffer;
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319 void pemu_sound_stop(void)
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324 void pemu_sound_wait(void)
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326 // don't need to do anything, writes will block by themselves
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329 void plat_debug_cat(char *str)
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333 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
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337 // clear whole screen in all buffers
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338 for (i = 0; i < fbdev_buffer_count; i++)
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339 memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);
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341 #ifdef USE_320_SCREEN
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342 PicoDrawSetColorFormat(1);
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343 PicoScanBegin = EmuScanBegin16;
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345 if (PicoAHW & PAHW_32X) {
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346 DrawLineDest = (unsigned short *)temp_frame;
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347 PicoDrawSetColorFormat(1);
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348 PicoScanBegin = NULL;
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349 PicoScanEnd = EmuScanEnd16_32x;
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351 PicoDrawSetColorFormat(-1);
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352 PicoScanBegin = NULL;
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353 PicoScanEnd = EmuScanEnd16;
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358 void pemu_loop_prep(void)
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360 emu_video_mode_change(0, 0, 0);
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361 pemu_sound_start();
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364 void pemu_loop_end(void)
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366 int po_old = PicoOpt;
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367 int eo_old = currentConfig.EmuOpt;
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370 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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372 /* do one more frame for menu bg */
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373 PicoOpt &= ~POPT_ALT_RENDERER;
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374 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;
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375 currentConfig.EmuOpt |= EOPT_16BPP;
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377 PicoDrawSetColorFormat(1);
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378 Pico.m.dirtyPal = 1;
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382 currentConfig.EmuOpt = eo_old;
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385 void plat_wait_till_us(unsigned int us_to)
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390 now = plat_get_ticks_us();
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392 // XXX: need to check NOHZ and djw kernel
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393 diff = (signed int)(us_to - now);
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394 if (diff > 10000) {
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395 //printf("sleep %d\n", us_to - now);
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396 usleep(diff * 15 / 16);
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397 now = plat_get_ticks_us();
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398 //printf(" wake %d\n", (signed)(us_to - now));
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401 while ((signed int)(us_to - now) > 512) {
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402 spend_cycles(1024);
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403 now = plat_get_ticks_us();
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408 const char *plat_get_credits(void)
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410 return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"
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412 "fDave: Cyclone 68000 core,\n"
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413 " base code of PicoDrive\n"
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414 "Reesy & FluBBa: DrZ80 core\n"
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415 "MAME devs: YM2612 and SN76496 cores\n"
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416 "rlyeh and others: minimal SDK\n"
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417 "Squidge: mmuhack\n"
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418 "Dzz: ARM940 sample\n"
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419 "GnoStiC / Puck2099: USB joy code\n"
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420 "craigix: GP2X hardware\n"
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421 "ketchupgun: skin design\n"
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423 "special thanks (for docs, ideas):\n"
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424 " Charles MacDonald, Haze,\n"
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425 " Stephane Dallongeville,\n"
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426 " Lordus, Exophase, Rokas,\n"
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427 " Nemesis, Tasco Deluxe";
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