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by vidarh 2987 days ago
Consider that there were 80-column "hacks" for even the Commodore 64 (using a 1MHz 6510) that did this: emulate text mode on a high res (for C64) graphics screen.

M68k 7.16Mhz/8MHz Amiga's didn't have a text mode.

The amount of data to copy to scroll text wasn't that huge even in graphics modes.