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8-bit acorn hardware • Re: GAL16V8 as stopgap for dead video ULA

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I would try this diagram, but there is no jed file for the gal 20v8 system :(
Added :D

I have been experimenting with an extra 74LS74 as a 2 bit shift registers to delay the DISEN signal and got reasonable results. Not sure with what clock signal I have to clock it with to be perfect, probably propagation delay also messes exact timing up. Will update the circuit soon.

BTW, I used Galette as GAL assembler: https://github.com/simon-frankau/galette

Statistics: Posted by KGE — Sun Mar 10, 2024 10:26 am



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