Re: 6502 NOP

        I can add that an 8088 NOP (for Gottlieb stuff) is a 0x90
(or 0 0 0 0 1 0 0 1 that way you have it below....)

Joe

On Mon, 9 Nov 1998, John Robertson wrote:

> 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
>
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
> mailto:jrr_at_flippers.com, web page http://www.flippers.com
> "Old pinballers never die, they just flip out."
>
>

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Joseph J. Welser jwelser@ccwf.cc.utexas.edu
Design Engineer -- Crystal Semiconductor Corporation
Ph.D. Student in E.E. -- University of Texas at Austin
Work: jwelser_at_crystal.cirrus.com http://www.crystal.com
P.O. Box 17847; Austin, TX 78760
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Received on Mon Nov 9 15:57:08 1998