Re: C64 GS

From: Gerrit Heitsch <>
Date: Tue, 30 Dec 2014 12:32:40 +0100
Message-ID: <>
On 12/30/2014 12:08 PM, smf wrote:
> Yeah I guess they paid someone to remove the vertical cartridge
> connector, solder in a IEC DIN connector & the missing keyboard components.
> The vertical cartridge connector disproves that the C64GS only came out
> because they had a large number of PCB's as they had to make a new PCB
> for it. They might have had a large number of VIC/SID/CIA, but commodore
> were traditionally pretty good with inventory. With short lead times
> because they were in charge of production they didn't produce anything
> unless there was demand. Quite what demand there was for a 8501 in 1990
> is a mystery as I don't think they were targetting Plus 4 owners looking
> to replace their overheating 7501's.

They might have had leftover 8501R4 dies which they then just packaged 
and made available in the spare parts channel. The datecode reflects the 
date the chip was packaged, not when it was made. Otherwise my 6510 with 
a '92 datecode wouldn't made much sense. I doubt MOS still made the 6510 
in '92 when they had a perfectly working replacement with the 8500 for a 
few years already.

When it comes to the 8501, I have a 8501R4 made 4986, a 8501 made 1189 
(MOS Logo) and a 8501 made 1490 (CSG logo). All of them have '24' 
printed after the datecode. Anyone knows what that stands for?


       Message was sent through the cbm-hackers mailing list
Received on 2014-12-30 12:00:40

Archive generated by hypermail 2.2.0.