Re: 6502 NOP

From: John Robertson <jrr_at_flippers.com>
Date: Mon Nov 09 1998 - 13:06:49 EST

Here is a list of NOP's for a few 8 bit cpu's:
 CPU - D0 D1 D2 D3 D4 D5 D6 D7
6502 - 0 1 0 1 0 1 1 1
6800 - 0 0 0 0 0 0 0 0 tie HALT, IRQ, & NMI TO 0
8080 - 0 0 0 0 0 0 0 0 (There are other problems with the 8080,
Lawnmowerman (Kev) and I and others are building in the future a
Signature Analysis page(s))

John :-#)#

jwelser@ccwf.cc.utexas.edu wrote:
>
> Hey all,
>
> I remember someone posting the NOP for the 6502 here a
> little while back. I have 11101010 (0xEA) written down in my notes
> as the NOP, but I don't know if that's right. Can anyone confirm?
>
> Thanks,
>
> Joe

-- 
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Received on Mon Nov 9 12:03:39 1998

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