Reply To: OSSC + Pentium 233 MMX (VGA)

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#22588
James-F
Participant

Here are my advanced timing setting for 400 mode for retro PCs with OSSC firmware v0.81.
This will result in no overscan and will show in perfect 4:3 on a PC monitor (not TV) with HDMI input.
Note that 400p mode is 70Hz and TV don’t like that at all, but PC monitors do.

480p in sampler: VESA 640×480@60
Allow upsample2x: On
384p proc: Line2x
480p/576p proc: Line2x
TX mode: DVI

640×400 (PC mode)
—————–
H. Samplerate : 700
H. Synclength : 64
H. Backporch : 52
H. Active : 570
V. Synclength : 2
V. Backporch : 34
V. Active : 400