Re: Real 82S100 in C64

From: silverdr_at_wfmh.org.pl
Date: Sun, 2 Sep 2012 00:54:13 +0200
Message-Id: <5BD489E2-90F4-4DEC-B3D2-02879F96AB73@wfmh.org.pl>
>>> On Sun, Jul 29, 2012 at 06:48:19PM +0200, Gerrit Heitsch wrote:
>>>> The funny thing is... Did Commodore ever use the 82S100 in production C64 systems? So far I have only seen the 93459PC made by Fairchild in any of them.
>>> 

>> On Jul 29, 2012, at 1:43 PM, Marko Mäkelä wrote:
>>> I seem to remember that my oldest C64 (serial number 34727) contains a 82S100. Can anyone confirm?

> On Jul 30, 2012, at 19:10, raycomp <raycomp@visi.com> wrote:
>> I have repaired perhaps a dozen of the older C64's which have had the 82S100 chip (some of them had failed).

On 2012-07-31, at 02:14, Justin wrote:
> I agree, all of mine failed also.

This thread can possibly explain to me the difference between what everyone kept saying for years (that the main failure cause for a 64 was a dead PLA chip) and my own experience from repairing literally hundreds of them back in the days. From my experience PLA was responsible for a really tiny percentage of the failures. But I recall only few (one or two - memory doesn't serve so good - of the very oldest boards) having the actual 82S100 loaded.

Might it be that the 82S100 was failing like hell and the Fairchild chips were much more robust?
-- 
SD!


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Received on 2012-09-01 23:00:09

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