Post #1958911
2026-04-13 03:18 UTC
Looks up EF9367. Ooo, ahh, it can do 512 pixel wide scan lines. That means 80 column text!
My current project #NthPongEars for the #NabuPC uses a 4 year older TMS9918A video chip that just does 256 pixels per line.
Replies (2)
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@pulkomandy@mastodon.tetaneutral.net 2026-04-13 06:23
@AGMS00 it can even go up to 1024 very narrow pixels, that the previous generation EF9365 and 66 couldn't do. But in all cases, they need quite a not of supporting logic (external shift registers, sequencer made of a counter and a lookup ROM, multiplexers, ...). And all write accesses are done during the vertical and horizontal borders only, so drawing performance is slow unless you turn off the display. And also, it has line and text drawing commands but no direct write access to the RAM
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@AGMS00@ruby.social 2026-04-13 13:25
#NthPongWars, not autocorrect Ears. That would be a bouncy rabbit game or something weirdly audible.