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"The 6502 False-read cycles" (document from Apple Computer) [message #394356] Thu, 07 May 2020 20:15 Go to next message
sicklittlemonkey is currently offline  sicklittlemonkey
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Does anyone have a copy of this document?
It was available to registered developers.

And it's a reference in this interesting document:
http://www.brutaldeluxe.fr/documentation/iwm/iwm_discussion_ 19820531.pdf

Cheers,
Nick.
Re: "The 6502 False-read cycles" (document from Apple Computer) [message #394460 is a reply to message #394356] Mon, 11 May 2020 13:30 Go to previous messageGo to next message
Michael J. Mahon is currently offline  Michael J. Mahon
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Nick Westgate <nick.westgate@gmail.com> wrote:
> Does anyone have a copy of this document?
> It was available to registered developers.
>
> And it's a reference in this interesting document:
> http://www.brutaldeluxe.fr/documentation/iwm/iwm_discussion_ 19820531.pdf
>
> Cheers,
> Nick.
>

Sather does a nice job of cataloging them in his “Understanding...” books.
Look at the cycle-by-cycle descriptions of 6502/65C02 instructions.

--
-michael - NadaNet 3.1 and AppleCrate II: http://michaeljmahon.com
Re: "The 6502 False-read cycles" (document from Apple Computer) [message #394473 is a reply to message #394460] Mon, 11 May 2020 21:51 Go to previous messageGo to next message
sicklittlemonkey is currently offline  sicklittlemonkey
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On Tuesday, 12 May 2020 03:30:38 UTC+10, Michael J. Mahon wrote:
> Sather does a nice job of cataloging them in his “Understanding....” books.
> Look at the cycle-by-cycle descriptions of 6502/65C02 instructions.

Yes, the Apple document (from Peter Baum) that I linked to refers to Beneath Apple DOS and Sather's Understanding the Apple II, which is interesting because it's dated 1982 and Sather's book has a copyright of 1983, so I assumed it had been released in 1983. Then again, it has a forward by Woz, so Apple must have had pre-release copies.

In any case, it's still interesting that Apple had an official document about 6502 false reads that was given to registered developers, and I'd like to compare it to Sather, and the Apple France 65816 document.

Cheers,
Nick.
Re: "The 6502 False-read cycles" (document from Apple Computer) [message #394743 is a reply to message #394473] Wed, 20 May 2020 15:52 Go to previous messageGo to next message
Antoine Vignau is currently offline  Antoine Vignau
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Hi Nick,
I wanted to reply to your original message regarding docs available in France vs the rest of the world but:
- the docs I own were available to any registered developer around the world,
- the docs were available through APDA and their "resellers"

So, I think that if I have a couple of such docs, that is because of or thanks to:
- having friends who were registered developers,
- having friends who keep things over time

I am sure other people have great resources in their garage, they just do not have the time to open their boxes! Perharps, I also own that False reads doc from Apple :-)

Antoine
Re: "The 6502 False-read cycles" (document from Apple Computer) [message #394759 is a reply to message #394743] Wed, 20 May 2020 23:18 Go to previous message
sicklittlemonkey is currently offline  sicklittlemonkey
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On Thursday, 21 May 2020 05:52:18 UTC+10, Antoine Vignau wrote:
> Perharps, I also own that False reads doc from Apple :-)

Thanks Antoine. I hope you do own it! : - )

Cheers,
Nick.
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