Re: 264/TED/Plus4 Story

From: crock <>
Date: Thu, 27 Oct 2011 21:52:17 +0200
Message-ID: <>
>> All the cpu's are 7501's and plastic. The earliest one is week 51, 1983.
> Are they all R1 or are there other revisions? I only have a single 
> 7501 which is an R1 from 2684. All the other CPUs are 8501R1.
The 7501's from late '83 have no revision number, the early '84 ones all 
say R1. The latest ones I have are from week 14, 1990 which are also R1! 
I don't know how much has to change to get a new revision number but 
those ones from 1990 run *MUCH* cooler than all the others, which get 
hot to the point of burning your fingers. I always heatsink them now.
>> Two of the PLA's were ceramic, but sadly only one of them is still
>> functional, from week 8, 84.
> The ceramic PLA I have is 1084. You do know that there is someone 
> selling a PLA replacement that can be used for the C64 and the 264 
> systems (selected by jumper setting)?
Yes, I did. Fortunately for me, I have spares anyway!
> I also assume they expected better sales than they got. :)
> What does surprise me is that the 8501 was still made in 1990, looks 
> like MOS kept making spares even though the 264 line was dead.
IMHO, the cpu expires more frequently than the TED. I found a source of 
8501's in China last year and got 12 working ones. I then bought several 
'defective' +4's and 16's of ebay and got all of them working. ~70% had 
dead cpu's.


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Received on 2011-10-27 20:00:29

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