Date   : Sun, 11 Feb 2007 23:23:31 +0000
From   : jgh@... (Jonathan Graham Harston)
Subject: Name that ULA

>Message-ID: <45C932F3.30208@...>
 
Richard Gellman <splodge@...> wrote:
> It is a very flat, 4-sided affair, with the markings etched out of a
> 
> The chip is marked "FERRANTI ACORN ULA 12CO21M-33 8422".
> 
> Does anyone know what this chip could be?
 
Electron ULA? I think that's square. Otherwise, I think I've seen
photos of experimental Tube systems with square ICs on them -
things like the ARM Evaluation Unit and the 32016 CoPro.
 
> I'd be pleased if it turned out to be some modern equivalent of a TUBE
> ULA, but I'm guessing this probably isn't the case.
 
I /think/ I've seen some Tube documentation with a square pinout.
I've just checked my printout of AppNote004 and there's no
physical pinouts at all, only logical pinouts.
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
Our chief weapons are 'who', 'ps -aux', 'kill -9', and a fanatical devotion
to 'reboot -q'.