On Wed, Jun 15, 2022, 6:34 PM Daryl Tester < [email protected]> wrote:
> > ALTLCD comes to (ageing and decrepit) mind? > ALTLCD is in RAM, it has character data. I think Jeff was talking about unused portions of the display components themselves. There are 10 display drivers and parts are unused at the edge of the screen. It isn't like peeking and poking ram, it's accessed via I/O instructions. You can put data there but it requires special logic. You can't use it for code, at least not code you want to run directly. And I don't recall whether it survives power on/off. Aside from Jeff, I think Ken Pettit has experimented with it. And maybe Ron Weisen once upon a time? Vague recollection his special file management tools made some use of it. Could be wrong. -- John.
