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by protomyth
4557 days ago
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The 6502 was fun and it was the first assembly I programmed[1]. The 6809 also deserves a look if anyone is reviewing old instruction sets / assembly code. I am still not sure which of the three I preferred. 1) on an Apple II, sadly not on my Atari 400 |
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One of the biggest advantages over the 6502 was the ability to work with 16-bit registers. X and Y were 16 bit, and a user/local stack pointer was added, U. Even the A and B accumulators could be combined into one 16-bit register, D.
It's one of my favorite architectures. You could do a hell of a lot with very little room.