Sega Genesis 320x224 Resolution Mode Optimal OSSC Timing:


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Input Cable: RGBS SCART Cable

OSSC Firmware = 0.81a (use 0.81 if you don't have audio version of OSSC)


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Note: Although these settings are based on my Sega Genesis M1VA3, the only values that may or may not differ from other Genesis revisions are the following:

1. Video LPF (my profile is based on the Model 1 with subcarrier trace removed)

2. Sampling phase (this always will be restricted to a case-by-case basis).

3. Advanced timing for 320x240's H. backporch.

4. Advanced timing for 320x240's V. backporch.

Everything else should be universal.


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Video in proc  >

Video LPF = Off (allowed me to reduce aliasing to a minimum in this profile)


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Sync opt.  >

Analog sync LPF = 2.5MHz (max)


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Output opt.  >

240p/288p proc = Whatever linex mode you prefer.

LineXx mode = 320x240 optim.


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Sampling opt.  >

<Adv. timing  > 320x240:


H. samplerate = 427

Now there's a slight issue with the Genesis's 320 res mode in that theoretrical optimal timing would seem to fall at 427.5. Using 428 doesn't really offer better results.

H. synclen = 31
H. backporch = 52
H. active = 320

V. synclen = 3
V. backporch = 16
V. active = 240

Back out to "Sampling phase" and adjust until all pixels are sharp with the least amount of color bleed and aliasing. Mine overall looked best at 348 degrees.


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Post-proc.  >

Vertical mask = 8 pixels (not needed if you're running line5X in 1920x1080 output mode on the OSSC)


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