Re: [hatari-devel] test needed on a 4MB STF

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 26/12/2016 à 19:21, Christian Zietz a écrit :
> Nicolas Pomarède schrieb:
>
> > when you say "reverse-engineering", do you mean by using some of the old
> > asic documents you retrieved some time ago (and following the different
> > connections/combinations of each signal to determine the "pseudo" code),
> > or by working on a decapped chip ?
>
> This indeed came from documents that I have and from puzzling out the
> connections and logic gates shown there. So there's always the small
> possibility that these documents differ from what was actually put into
> silicon. But I don't know how to reverse-engineer from a decapped chip.

I thought the documents you found were about the STE GST/MCU ; seems I 
misread :(

> Jorge/"ijor" on Atari-Forum.com knows how to do that:
> <http://atari-forum.com/viewtopic.php?f=15&t=30241>. He's also the one
> who found out that the C025912-38 MMU is a Ricoh gate array.

Yes, I closely followed these thread too, especially the ones on the mmu 
/ shifter regarding the wake up states :)

Nicolas