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 unsigned char temp_frame[320 * 240 * 2];
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21 unsigned char *PicoDraw2FB = temp_frame;
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22 static int osd_fps_x;
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23 char cpu_clk_name[] = "unused";
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25 extern void update_screen(void);
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28 void pemu_prep_defconfig(void)
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30 // XXX: move elsewhere
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31 g_menubg_ptr = temp_frame;
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34 void pemu_validate_config(void)
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37 // PicoOpt &= ~POPT_EXT_FM;
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38 PicoOpt &= ~POPT_EN_SVP_DRC;
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41 // FIXME: dupes from GP2X, need cleanup
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42 static void (*osd_text)(int x, int y, const char *text);
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44 static void osd_text8(int x, int y, const char *text)
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46 int len = strlen(text)*8;
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50 for (h = 0; h < 8; h++) {
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51 offs = (x + g_screen_width * (y+h)) & ~3;
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52 p = (int *) ((char *)g_screen_ptr + offs);
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53 for (i = len; i; i--, p++)
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56 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 ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {
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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 static int EmuScanBegin16(unsigned int num)
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106 DrawLineDest = (unsigned short *)g_screen_ptr + num * g_screen_width;
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111 void pemu_update_display(const char *fps, const char *notice)
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113 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {
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115 osd_text(4, g_screen_height - 8, notice);
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116 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)
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117 osd_text(osd_fps_x, g_screen_height - 8, fps);
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119 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))
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125 void plat_video_toggle_renderer(int is_next, int force_16bpp, int is_menu)
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127 // this will auto-select SMS/32X renderers
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128 PicoDrawSetColorFormat(1);
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131 void plat_video_menu_enter(int is_rom_loaded)
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135 void plat_video_menu_begin(void)
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137 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);
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140 void plat_video_menu_end(void)
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145 void plat_status_msg_clear(void)
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147 unsigned short *d = (unsigned short *)g_screen_ptr + g_screen_width * g_screen_height;
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148 int l = g_screen_width * 8;
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149 memset32((int *)(d - l), 0, l * 2 / 4);
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152 void plat_status_msg_busy_next(const char *msg)
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154 plat_status_msg_clear();
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155 pemu_update_display("", msg);
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156 emu_status_msg("");
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160 void plat_status_msg_busy_first(const char *msg)
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162 // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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163 plat_status_msg_busy_next(msg);
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166 void plat_update_volume(int has_changed, int is_up)
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170 void pemu_forced_frame(int opts)
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172 int po_old = PicoOpt;
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173 int eo_old = currentConfig.EmuOpt;
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175 PicoOpt &= ~POPT_ALT_RENDERER;
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176 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites
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177 currentConfig.EmuOpt |= EOPT_16BPP;
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179 PicoDrawSetColorFormat(1);
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180 PicoScanBegin = EmuScanBegin16;
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182 Pico.m.dirtyPal = 1;
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183 PicoFrameDrawOnly();
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186 currentConfig.EmuOpt = eo_old;
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189 static void updateSound(int len)
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192 if (PicoOpt & POPT_EN_STEREO)
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195 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
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198 /* avoid writing audio when lagging behind to prevent audio lag */
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199 if (PicoSkipFrame != 2)
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200 sndout_oss_write(PsndOut, len);
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203 void pemu_sound_start(void)
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205 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
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206 int target_fps = Pico.m.pal ? 50 : 60;
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210 if (currentConfig.EmuOpt & EOPT_EN_SOUND)
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212 int snd_excess_add;
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213 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)
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214 PsndRerate(Pico.m.frame_count ? 1 : 0);
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216 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
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217 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
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218 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
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219 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);
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220 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);
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221 PicoWriteSound = updateSound;
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222 plat_update_volume(0, 0);
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223 memset(sndBuffer, 0, sizeof(sndBuffer));
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224 PsndOut = sndBuffer;
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225 PsndRate_old = PsndRate;
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226 PicoOpt_old = PicoOpt;
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227 pal_old = Pico.m.pal;
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231 void pemu_sound_stop(void)
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235 void pemu_sound_wait(void)
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237 // don't need to do anything, writes will block by themselves
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240 void plat_debug_cat(char *str)
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244 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
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248 // clear whole screen in all buffers
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249 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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252 void pemu_loop_prep(void)
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254 PicoDrawSetColorFormat(1);
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255 PicoScanBegin = EmuScanBegin16;
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256 osd_text = osd_text16;
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258 pemu_sound_start();
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261 void pemu_loop_end(void)
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263 int po_old = PicoOpt;
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264 int eo_old = currentConfig.EmuOpt;
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267 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
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269 /* do one more frame for menu bg */
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270 PicoOpt &= ~POPT_ALT_RENDERER;
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271 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;
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272 currentConfig.EmuOpt |= EOPT_16BPP;
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274 PicoDrawSetColorFormat(1);
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275 Pico.m.dirtyPal = 1;
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279 currentConfig.EmuOpt = eo_old;
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282 void plat_wait_till_us(unsigned int us_to)
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286 now = plat_get_ticks_us();
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288 while ((signed int)(us_to - now) > 512)
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291 now = plat_get_ticks_us();
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295 void plat_video_wait_vsync(void)
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299 const char *plat_get_credits(void)
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301 return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"
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303 "fDave: Cyclone 68000 core,\n"
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304 " base code of PicoDrive\n"
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305 "Reesy & FluBBa: DrZ80 core\n"
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306 "MAME devs: YM2612 and SN76496 cores\n"
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307 "rlyeh and others: minimal SDK\n"
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308 "Squidge: mmuhack\n"
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309 "Dzz: ARM940 sample\n"
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310 "GnoStiC / Puck2099: USB joy code\n"
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311 "craigix: GP2X hardware\n"
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312 "ketchupgun: skin design\n"
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314 "special thanks (for docs, ideas):\n"
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315 " Charles MacDonald, Haze,\n"
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316 " Stephane Dallongeville,\n"
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317 " Lordus, Exophase, Rokas,\n"
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318 " Nemesis, Tasco Deluxe";
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