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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21 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
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22 static unsigned char temp_frame[g_screen_width * g_screen_height * 2];
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23 unsigned char *PicoDraw2FB = temp_frame;
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24 const char *renderer_names[] = { NULL };
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25 const char *renderer_names32x[] = { NULL };
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26 char cpu_clk_name[] = "Max CPU clock";
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34 static int get_cpu_clock(void)
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38 f = fopen("/proc/pandora/cpu_mhz_max", "r");
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40 fscanf(f, "%d", &ret);
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46 void pemu_prep_defconfig(void)
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48 // XXX: move elsewhere
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49 g_menubg_ptr = temp_frame;
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51 defaultConfig.EmuOpt |= EOPT_VSYNC;
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52 defaultConfig.scaling = SCALE_2x2_3x2;
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55 void pemu_validate_config(void)
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57 currentConfig.CPUclock = get_cpu_clock();
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61 static void osd_text(int x, int y, const char *text)
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63 int len = strlen(text)*8;
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69 for (h = 0; h < 8; h++) {
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70 p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));
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71 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;
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73 emu_text_out8(x, y, text);
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78 for (h = 0; h < 16; h++) {
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79 p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));
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80 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;
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82 text_out16(x, y, text);
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86 static void draw_cd_leds(void)
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90 // if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?
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91 old_reg = Pico_mcd->s68k_regs[0];
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95 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
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96 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
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97 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =
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98 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =
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99 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;
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100 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =
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101 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =
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102 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;
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105 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);
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106 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;
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107 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;
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108 *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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109 *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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110 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
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114 static int emuscan_1x1(unsigned int num)
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116 DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;
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117 //int w = (Pico.video.reg[12]&1) ? 320 : 256;
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118 //DrawLineDest = (unsigned short *)g_screen_ptr + num*w;
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123 #define MAKE_EMUSCAN(name_, clut_name_, offs_, len_) \
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124 static int name_(unsigned int num) \
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126 unsigned char *ps = HighCol+8; \
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127 unsigned short *pd, *pal = HighPal; \
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128 int sh = Pico.video.reg[0xC] & 8; \
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131 pd = (unsigned short *)g_screen_ptr + num*800*2 + offs_;\
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133 if (Pico.m.dirtyPal) \
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134 PicoDoHighPal555(sh); \
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136 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI)) \
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137 mask = 0x3f; /* upper bits are priority stuff */\
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139 clut_line##clut_name_(pd, ps, pal, (mask<<16) | len_); \
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144 MAKE_EMUSCAN(emuscan_2x2_40, 2x2, 800/2 - 320*2/2, 320)
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145 MAKE_EMUSCAN(emuscan_2x2_32, 2x2, 800/2 - 256*2/2, 256)
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146 MAKE_EMUSCAN(emuscan_3x2_32, 3x2, 800/2 - 256*3/2, 256)
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149 static int EmuScanEnd16_32x(unsigned int num)
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155 ps = (unsigned int *)temp_frame;
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156 pd = (unsigned int *)g_screen_ptr + (num*800*2 + 800/2 - 320*2/2) / 2;
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158 for (len = 320/2; len > 0; len--, ps++) {
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159 unsigned int p, p1;
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163 *pd = pd[800/2] = p;
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168 *pd = pd[800/2] = p;
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176 void pemu_finalize_frame(const char *fps, const char *notice)
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178 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {
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180 osd_text(4, 464, notice);
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181 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)
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182 osd_text(640, 464, fps);
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184 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))
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188 void plat_video_toggle_renderer(int change, int is_menu)
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190 // this will auto-select SMS/32X renderers
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191 PicoDrawSetOutFormat(PDF_RGB555, 1);
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194 void plat_video_menu_enter(int is_rom_loaded)
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198 void plat_video_menu_begin(void)
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200 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);
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203 void plat_video_menu_end(void)
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208 void plat_status_msg_clear(void)
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210 int s = g_screen_width * g_screen_height * 2;
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211 int l = g_screen_width * 16 * 2;
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214 for (i = 0; i < fbdev_buffer_count; i++)
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215 memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);
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218 void plat_status_msg_busy_next(const char *msg)
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220 plat_status_msg_clear();
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221 pemu_finalize_frame("", msg);
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223 emu_status_msg("");
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227 void plat_status_msg_busy_first(const char *msg)
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229 // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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230 plat_status_msg_busy_next(msg);
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233 void plat_update_volume(int has_changed, int is_up)
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235 static int prev_frame = 0, wait_frames = 0;
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236 int vol = currentConfig.volume;
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241 if (vol < 99) vol++;
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243 if (vol > 0) vol--;
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246 sndout_oss_setvol(vol, vol);
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247 currentConfig.volume = vol;
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248 emu_status_msg("VOL: %02i", vol);
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249 prev_frame = Pico.m.frame_count;
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253 void pemu_forced_frame(int opts)
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255 int po_old = PicoOpt;
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258 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites
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260 Pico.m.dirtyPal = 1;
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261 PicoFrameDrawOnly();
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266 static void updateSound(int len)
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271 if (PicoOpt & POPT_EN_STEREO)
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274 // sndout_oss_can_write() not reliable..
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275 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
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278 /* avoid writing audio when lagging behind to prevent audio lag */
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279 if (PicoSkipFrame == 2)
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282 t = plat_get_ticks_ms();
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283 sndout_oss_write(PsndOut, len);
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284 t = plat_get_ticks_ms() - t;
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286 printf("audio lag %u\n", t);
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289 void pemu_sound_start(void)
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291 int target_fps = Pico.m.pal ? 50 : 60;
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295 if (currentConfig.EmuOpt & EOPT_EN_SOUND)
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297 int snd_excess_add, frame_samples;
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298 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
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300 PsndRerate(Pico.m.frame_count ? 1 : 0);
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302 frame_samples = PsndLen;
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303 snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;
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304 if (snd_excess_add != 0)
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307 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
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308 PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);
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309 sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);
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310 //sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
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311 PicoWriteSound = updateSound;
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312 plat_update_volume(0, 0);
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313 memset(sndBuffer, 0, sizeof(sndBuffer));
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314 PsndOut = sndBuffer;
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318 void pemu_sound_stop(void)
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323 void pemu_sound_wait(void)
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325 // don't need to do anything, writes will block by themselves
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328 void plat_debug_cat(char *str)
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332 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
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336 // clear whole screen in all buffers
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337 for (i = 0; i < fbdev_buffer_count; i++)
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338 memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);
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340 PicoScanBegin = NULL;
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341 PicoScanEnd = NULL;
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344 if (PicoAHW & PAHW_32X) {
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346 DrawLineDest = (unsigned short *)temp_frame;
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347 PicoDrawSetOutFormat(PDF_RGB555, 1);
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348 PicoScanEnd = EmuScanEnd16_32x;
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352 switch (currentConfig.scaling) {
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354 PicoDrawSetOutFormat(PDF_RGB555, 1);
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355 PicoScanBegin = emuscan_1x1;
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357 case SCALE_2x2_3x2:
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358 PicoDrawSetOutFormat(PDF_NONE, 0);
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359 PicoScanEnd = is_32cols ? emuscan_3x2_32 : emuscan_2x2_40;
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361 case SCALE_2x2_2x2:
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362 PicoDrawSetOutFormat(PDF_NONE, 0);
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363 PicoScanEnd = is_32cols ? emuscan_2x2_32 : emuscan_2x2_40;
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369 void pemu_loop_prep(void)
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371 emu_video_mode_change(0, 0, 0);
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373 if (currentConfig.CPUclock != get_cpu_clock()) {
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374 FILE *f = fopen("/proc/pandora/cpu_mhz_max", "w");
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376 fprintf(f, "%d\n", currentConfig.CPUclock);
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381 pemu_sound_start();
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384 void pemu_loop_end(void)
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386 int po_old = PicoOpt;
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387 int eo_old = currentConfig.EmuOpt;
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390 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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392 /* do one more frame for menu bg */
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393 PicoOpt &= ~POPT_ALT_RENDERER;
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394 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;
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395 currentConfig.EmuOpt |= EOPT_16BPP;
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397 PicoDrawSetOutFormat(PDF_RGB555, 1);
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398 Pico.m.dirtyPal = 1;
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402 currentConfig.EmuOpt = eo_old;
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405 void plat_wait_till_us(unsigned int us_to)
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410 now = plat_get_ticks_us();
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412 // XXX: need to check NOHZ
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413 diff = (signed int)(us_to - now);
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414 if (diff > 10000) {
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415 //printf("sleep %d\n", us_to - now);
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416 usleep(diff * 15 / 16);
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417 now = plat_get_ticks_us();
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418 //printf(" wake %d\n", (signed)(us_to - now));
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421 while ((signed int)(us_to - now) > 512) {
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422 spend_cycles(1024);
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423 now = plat_get_ticks_us();
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428 const char *plat_get_credits(void)
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430 return "PicoDrive v" VERSION " (c) notaz, 2006-2010\n\n\n"
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432 "fDave: Cyclone 68000 core,\n"
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433 " base code of PicoDrive\n"
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434 "Reesy & FluBBa: DrZ80 core\n"
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435 "MAME devs: YM2612 and SN76496 cores\n"
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436 "Pandora team: Pandora\n"
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439 "special thanks (for docs, ideas):\n"
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440 " Charles MacDonald, Haze,\n"
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441 " Stephane Dallongeville,\n"
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442 " Lordus, Exophase, Rokas,\n"
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443 " Nemesis, Tasco Deluxe";
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