Re:Dirty tricks 6502 programmers use
by tom_ on Monday August 19, 2019 @07:14AM
(#20736766)
It's a grid of 24 rows (or is it 25?) of 40 bytes, top to bottom, left to right, one byte per char... not exactly uncommon for character mapped displays.
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Re:Dirty tricks 6502 programmers use
by scarface74 on Monday August 19, 2019 @07:30AM
(#20736835)
That wasn’t how the Apple II stored characters. The memory didn’t map contiguously to screen positions where you could calculate the character position using $400+x+y*40.