martin@guddler.co.uk wrote:
> Hi all,
>
> Just been trying to find information on what is different about the KK
> 6502 (Atari) NOP adapter that makes it produce 8080 signatures as
> opposed to the normal 6502 ones and I discovered that the question has
> been posed before - not surprising I guess.
>
> Just wandering if this mystery was ever solved and perhaps I'm not
> looking in the right places?
>
> I'm sure I once took down signatures from a working board using my
> standard 6502 adapter but as always, when I want them, I'm damned if I
> can find them so maybe I imagined it.
>
> In case anyone hasn't a clue what I'm talking about, see the footnote
> on page 14 of the PDF document "SigAnalNotes.pdf" that ought to be all
> over the net but I can't find a link to it just yet!
>
> The original TechTools list message where this was asked before is
> here (with no answer):
> http://www.vectorlist.org/TechTools/2002/10/0035.html
>
> Thanks,
> Martin.
>
Check the FTP archive on TTL (link below) for "Sig-Analy-HPJMay77.pdf"
this covers some Sig Analysis questions. I only have info on the 6502,
6800 and Z80 NOP fixtures, which is at the rear of "KK-Signature2.pdf"
in the KurzKasch section of TTL.
For your question I would print off the last two pages of the
KK_Signature2.pdf, then pull up info on the 8080, find out what
instruction gives NOP, and then compare the pinout with the 6502.
John :-#)#
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