Re: 6502 illegal opcodes questions

[heuser.marcus@freenet.de]

> And back then noone really thought about future utility. Maybe apart from
> the Apple II those machines were pretty much integrated & rather unexpandable
> boxes -- even more, in the early homecomputer and video game market there was
> no sense for a "family concept" where software from the old machine would just
> run on its next generation successor, cause that most likely was an entirely
> new box.
> Think of Atari 400/800 vs. 600/800XL, Commodore VIC20 vs. C64, Sinclair ZX81
> vs. Spectrum just to name a few.

The Ataris are not a good example - they are mostly compatible
(hardware and software). Think of their 8-bit machines simply as
"family members" - not different hardware generations like the other
machines.

bye
Marcus