Optimal timings

Console / mode	Active area	Dots per scanline / no. scanlines	OSSC base mode	Modified parameters	Notes	PC modeline
NES 240p	256x224	341 / 262 [1][2]	240p_L3M3	-	V.active could be set to 224 if accepted by display	Modeline "ossc_nes_1280x720" 80.55 1280 1385 1510 1705 720 729 738 786 -hsync -vsync
SNES 240p	256x224(/240)	341 / 262 [3]	240p_L3M3	-	-	Modeline "ossc_snes_1280x720" 80.55 1280 1385 1510 1705 720 729 738 786 -hsync -vsync
N64 320x240	320(/640)x240	773.25 (?) / 262 [4]	240p_L3M2	H.samplerate=387, H.synclen=22, H.backporch=36	Every other visible dot (of 640) is interpolated
PSX 320x240	320x240	426.25 (?) / 263 [5]	240p_L3M2
Saturn 320x240	320x240	427 / 262 [6]	240p_L3M2	H.samplerate=427
DC VGA	640(/720)x240	858 / 525 [7]	480p	H active=640
CPS2 240p	384x240	512 / 262	240p_L3M2	H.samplerate=512, H.active=384, H.backporch=66
Seibu SPI	?	? / 293 (?)