Re: Another giant leap... ermmm... sideways

[ee31ag]

If we are going to the trouble of shadow ram and all
the paging and refreshing nonsense that that involves,
why not just build a faster video display - just modes
3 and 4 for simplicity. Then there's no need to replace
the RAM, and the colour encoder is already there.
Also, the video circuitry will refresh the RAM everytime
it does a read, so there's no need for a seperate refresh
circuit.