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 :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/