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When my IBM PC 5150's CGA monitor lost its vertical sync (and I was on a BBS and vibrated my lips so I could read the text to logout properly ... really!) I got
by thanatos519 4y ago
When my IBM PC 5150's CGA monitor lost its vertical sync (and I was on a BBS and vibrated my lips so I could read the text to logout properly ... really!) I got a Cardinal VGA card for the 8-bit bus.
So yeah, VGA was possible all the way back to the original.