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by ajross
173 days ago
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Somewhat disappointing. The tl;dr is that the author uses an off-the-shelf 6502 compression library and just de-interlaces the Hi-Res framebuffer to improve spacial locality. The reasoning behind the oddball framebuffer layout is handwaved away with "you can probably blame Woz for this" and "possibly to save a few chips on the motherboard". Well, yes, to both. And the Apple II scan hardware is an absolute masterpiece of the era (surpassed only, IMHO, by the Disk ][ card he invented a year later). That's what we should be talking about. |
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