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Hi,
Does anyone know which IC/ ICs are responsible for flipping the video upside down for player 2 in cocktail mode on a phoenix board.
My Phoenix board restarts when it is about to flip the screen. I've checked the DIP switchs and their associated logic ( IC1 (74LS245) and IC3 (74LS244), but struggling to locate where the fault is as it only occurs on attempting to flip the video.
The logic from the above ICs goes to the CPU address lines then data out to several video associated ICs, but where is the flip done?
Any help would be appreciated.
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