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 "version.h"
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16 #include <pico/pico_int.h>
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19 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
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20 char cpu_clk_name[] = "unused";
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21 const char *renderer_names_[] = { "16bit accurate", " 8bit accurate", " 8bit fast", NULL };
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22 const char *renderer_names32x_[] = { "accurate", "faster ", "fastest ", NULL };
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23 const char **renderer_names = renderer_names_;
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24 const char **renderer_names32x = renderer_names32x_;
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25 enum renderer_types { RT_16BIT, RT_8BIT_ACC, RT_8BIT_FAST, RT_COUNT };
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28 void pemu_prep_defconfig(void)
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32 void pemu_validate_config(void)
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35 // PicoOpt &= ~POPT_EXT_FM;
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36 PicoOpt &= ~POPT_EN_SVP_DRC;
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39 // FIXME: dupes from GP2X, need cleanup
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40 static void (*osd_text)(int x, int y, const char *text);
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43 static void osd_text8(int x, int y, const char *text)
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45 int len = strlen(text)*8;
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49 for (h = 0; h < 8; h++) {
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50 offs = (x + g_screen_width * (y+h)) & ~3;
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51 p = (int *) ((char *)g_screen_ptr + offs);
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52 for (i = len; i; i--, p++)
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55 emu_text_out8(x, y, text);
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59 static void osd_text16(int x, int y, const char *text)
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61 int len = strlen(text)*8;
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65 for (h = 0; h < 8; h++) {
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66 offs = (x + g_screen_width * (y+h)) & ~1;
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67 p = (int *) ((short *)g_screen_ptr + offs);
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68 for (i = len; i; i--, p++)
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69 *p = (*p >> 2) & 0x39e7;
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71 emu_text_out16(x, y, text);
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74 static void draw_cd_leds(void)
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76 int led_reg, pitch, scr_offs, led_offs;
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77 led_reg = Pico_mcd->s68k_regs[0];
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81 scr_offs = pitch * 2 + 4;
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83 if (currentConfig.renderer != RT_16BIT) {
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84 #define p(x) px[(x) >> 2]
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86 unsigned int *px = (unsigned int *)((char *)g_screen_ptr + scr_offs);
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87 unsigned int col_g = (led_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
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88 unsigned int col_r = (led_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
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89 p(pitch*0) = p(pitch*1) = p(pitch*2) = col_g;
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90 p(pitch*0 + led_offs) = p(pitch*1 + led_offs) = p(pitch*2 + led_offs) = col_r;
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93 #define p(x) px[(x)*2 >> 2] = px[((x)*2 >> 2) + 1]
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95 unsigned int *px = (unsigned int *)((short *)g_screen_ptr + scr_offs);
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96 unsigned int col_g = (led_reg & 2) ? 0x06000600 : 0;
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97 unsigned int col_r = (led_reg & 1) ? 0xc000c000 : 0;
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98 p(pitch*0) = p(pitch*1) = p(pitch*2) = col_g;
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99 p(pitch*0 + led_offs) = p(pitch*1 + led_offs) = p(pitch*2 + led_offs) = col_r;
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104 void pemu_finalize_frame(const char *fps, const char *notice)
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106 if (currentConfig.renderer != RT_16BIT && !(PicoAHW & PAHW_32X)) {
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107 unsigned short *pd = (unsigned short *)g_screen_ptr + 8 * g_screen_width;
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108 unsigned char *ps = PicoDraw2FB + 328*8 + 8;
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109 unsigned short *pal = HighPal;
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111 if (Pico.m.dirtyPal)
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112 PicoDrawUpdateHighPal();
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113 for (i = 0; i < 224; i++, ps += 8)
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114 for (x = 0; x < 320; x++)
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115 *pd++ = pal[*ps++];
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118 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {
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120 osd_text(4, g_screen_height - 8, notice);
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121 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)
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122 osd_text(g_screen_width - 60, g_screen_height - 8, fps);
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124 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))
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128 static void apply_renderer(void)
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130 PicoScanBegin = NULL;
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131 PicoScanEnd = NULL;
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133 switch (currentConfig.renderer) {
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135 PicoOpt &= ~POPT_ALT_RENDERER;
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136 PicoDrawSetOutFormat(PDF_RGB555, 0);
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137 PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
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140 PicoOpt &= ~POPT_ALT_RENDERER;
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141 PicoDrawSetOutFormat(PDF_8BIT, 0);
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142 PicoDrawSetOutBuf(PicoDraw2FB + 8, 328);
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145 PicoOpt |= POPT_ALT_RENDERER;
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146 PicoDrawSetOutFormat(PDF_NONE, 0);
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150 if (PicoAHW & PAHW_32X) {
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152 if (currentConfig.renderer == RT_16BIT)
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155 PicoDrawSetOutFormat(PDF_NONE, 0);
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156 PicoDraw32xSetFrameMode(1, only_32x);
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157 PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
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159 //PicoDraw32xSetFrameMode(0, 0);
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160 //PicoDrawSetOutFormat(PDF_RGB555, 1);
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163 void plat_video_toggle_renderer(int change, int is_menu)
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165 currentConfig.renderer += change;
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166 if (currentConfig.renderer >= RT_COUNT)
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167 currentConfig.renderer = 0;
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168 else if (currentConfig.renderer < 0)
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169 currentConfig.renderer = RT_COUNT - 1;
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174 emu_status_msg(renderer_names[currentConfig.renderer]);
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177 void plat_video_menu_enter(int is_rom_loaded)
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181 void plat_video_menu_begin(void)
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183 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);
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186 void plat_video_menu_end(void)
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191 void plat_status_msg_clear(void)
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193 unsigned short *d = (unsigned short *)g_screen_ptr + g_screen_width * g_screen_height;
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194 int l = g_screen_width * 8;
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195 memset32((int *)(d - l), 0, l * 2 / 4);
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198 void plat_status_msg_busy_next(const char *msg)
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200 plat_status_msg_clear();
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201 pemu_finalize_frame("", msg);
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203 emu_status_msg("");
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207 void plat_status_msg_busy_first(const char *msg)
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209 // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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210 plat_status_msg_busy_next(msg);
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213 void plat_update_volume(int has_changed, int is_up)
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217 void pemu_forced_frame(int opts)
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219 int po_old = PicoOpt;
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220 int eo_old = currentConfig.EmuOpt;
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222 PicoOpt &= ~POPT_ALT_RENDERER;
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223 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites
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225 PicoDrawSetOutFormat(PDF_RGB555, 1);
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226 PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
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227 PicoDraw32xSetFrameMode(0, 0);
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229 Pico.m.dirtyPal = 1;
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230 PicoFrameDrawOnly();
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233 currentConfig.EmuOpt = eo_old;
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236 static void updateSound(int len)
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239 if (PicoOpt & POPT_EN_STEREO)
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242 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
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245 /* avoid writing audio when lagging behind to prevent audio lag */
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246 if (PicoSkipFrame != 2)
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247 sndout_oss_write(PsndOut, len);
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250 void pemu_sound_start(void)
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252 int target_fps = Pico.m.pal ? 50 : 60;
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256 if (currentConfig.EmuOpt & EOPT_EN_SOUND)
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258 int snd_excess_add, frame_samples;
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259 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
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261 PsndRerate(Pico.m.frame_count ? 1 : 0);
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263 frame_samples = PsndLen;
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264 snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;
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265 if (snd_excess_add != 0)
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268 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
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269 PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);
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270 sndout_oss_start(PsndRate, frame_samples, is_stereo);
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271 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
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272 PicoWriteSound = updateSound;
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273 plat_update_volume(0, 0);
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274 memset(sndBuffer, 0, sizeof(sndBuffer));
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275 PsndOut = sndBuffer;
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279 void pemu_sound_stop(void)
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283 void pemu_sound_wait(void)
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285 // don't need to do anything, writes will block by themselves
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288 void plat_debug_cat(char *str)
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292 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
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294 // clear whole screen in all buffers
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295 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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298 void pemu_loop_prep(void)
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301 osd_text = osd_text16;
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303 pemu_sound_start();
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306 void pemu_loop_end(void)
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308 int po_old = PicoOpt;
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309 int eo_old = currentConfig.EmuOpt;
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312 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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314 /* do one more frame for menu bg */
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315 PicoOpt &= ~POPT_ALT_RENDERER;
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316 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;
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318 PicoDrawSetOutFormat(PDF_RGB555, 1);
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319 PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
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320 PicoDraw32xSetFrameMode(0, 0);
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321 Pico.m.dirtyPal = 1;
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325 currentConfig.EmuOpt = eo_old;
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328 void plat_wait_till_us(unsigned int us_to)
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332 now = plat_get_ticks_us();
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334 while ((signed int)(us_to - now) > 512)
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337 now = plat_get_ticks_us();
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341 const char *plat_get_credits(void)
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343 return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"
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345 "fDave: Cyclone 68000 core,\n"
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346 " base code of PicoDrive\n"
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347 "Reesy & FluBBa: DrZ80 core\n"
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348 "MAME devs: YM2612 and SN76496 cores\n"
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349 "rlyeh and others: minimal SDK\n"
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350 "Squidge: mmuhack\n"
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351 "Dzz: ARM940 sample\n"
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352 "GnoStiC / Puck2099: USB joy code\n"
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353 "craigix: GP2X hardware\n"
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354 "ketchupgun: skin design\n"
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356 "special thanks (for docs, ideas):\n"
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357 " Charles MacDonald, Haze,\n"
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358 " Stephane Dallongeville,\n"
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359 " Lordus, Exophase, Rokas,\n"
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360 " Nemesis, Tasco Deluxe";
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