Re: www.6502.org

[david@uow.edu.au (David Wilson)]

zefram@daystrom.bog (Zefram Cochrane) writes:
>Oooh. Err. I remember those funny instructions on the 6502. The parts
>that I was using (10 y ago) had the inc and dec instructions swapped
>round! (65C12 and 50743 IIRC)

I don't remember any chips with broken inc/dec. I do know that the first
revision of the 6502 did not have one of ROL or ROR. Microsoft's 6502 BASIC
for the OSI was written to work around this (making it slower) even though
by then all the 6502s had both instructions.
--
David Wilson  School of IT & CS, Uni of Wollongong, Australia