On Donnerstag, 31. Dezember 2020 21:53:19 CET smf wrote: > How much does it slow it down? Does it take half the bandwidth, or just > enough to fetch the required data? As I am using just a "dumb" CPLD, it basically takes away 1/2 the bandwith _at_MHz for composite video, or 2/3 the bandwidth for VGA output. But only for the on-screen area, and I plan to implement a "video off" register. > Is it page mode ram? If so can you burst the display data? No, simple 8-bit parallel async RAM. > > On 30/12/2020 15:02, afachat_at_gmx.de wrote: > > As written in the other mail, that depends on the RAM used. > > > > Also, during screen display, the CPU is slowed down to allow for video > > memory fetches by the video circuitry. One could potentially add a second > > "fast RAM" chip that does not get slowed down by video access.Received on 2021-01-01 19:00:02
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