Re: Searching for broken PLAs

From: Nicolas Welte <>
Date: Sat, 28 Jul 2012 09:53:18 +0200
Message-ID: <>
On 07.07.2012 03:17, Bil Herd wrote:
> Are you going to mention how we had the polaroid's of the Signetics part
> up in the chiplab?  Or the bad job we did of passivation?  The PLA's were
> in some way not very boring as they were our last salvation to pull a
> problem out of the fire, and our chance to impart any coolness in logic.

I found an interesting article/interview from two Signetics engineers that 
worked on the development of the FPLA. Even the Commodore 64 is mentioned 
in one sentence :) Maybe it's more interesting to read about some technical 
details of the chip, how other fabs failed (MMI) to second source the chip 
or got only a bad yield (Fairchield). Also described is an option to do a 
mask programmed version of the FPLA, but according to the interview no 
customer made use of them.

I found this via the microcontroller forum:


       Message was sent through the cbm-hackers mailing list
Received on 2012-07-28 08:00:05

Archive generated by hypermail 2.2.0.