Optimal timings

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Console / mode Dots per scanline / no. scanlines / @dotclk OSSC base mode Modified parameters Notes PC modeline
NES 256x240 @60.10Hz 341 / 262 / @5.37MHz(NTSC) [1][2] 256x240 To reduce jitter in couple topmost lines, try disabling ""Allow TVP HPLL2x" and/or using mask.
Modeline "ossc_nes_1280x720_60.08"  80.55  1280 1385 1510 1705  720 729 738 786  -hsync -vsync
SNES 256x239/224 @60.10Hz 341 / 262 / @5.37MHz(NTSC) @5.32MHz(PAL) [3] 256x240
Modeline "ossc_snes_1280x720_60.08"  80.55  1280 1385 1510 1705  720 729 738 786  -hsync -vsync
Mega Drive 320x224 @60Hz 427 / 262 / @? 320x240 H.samplerate=427
Mega Drive 256x224 @60Hz 341 / 262 / @? 256x240
N64 320x240 @60Hz 773.25 (?) / 262 / @12.18MHz(NTSC) [4] 320x240 H.samplerate=387, H.synclen=22, H.backporch=36 Every other visible dot (of 640) is interpolated
PSX 320x240 @60Hz 426.625 (?) / 263 / @6.71MHz(NTSC) @6.65MHz(PAL) [5] [6] 320x240 -
Saturn 320x240 @60Hz 427 / 262 / @6.71MHz [7] 320x240 H.samplerate=427
DC VGA @60Hz 858 / 525 / @27MHz [8] 480p H active=640
GC GBI ULL @59.72Hz 866 / 261 / @13.5MHz ? 240p H samplerate=866 ?
CPS2 384x224 @59.64Hz 512 / 262 / @8MHz 320x240 H.samplerate=512, H.active=384, H.backporch=66
Seibu SPI ? / 293 (?) ?