Re: C= IC's (2)

From: William Levak (wlevak_at_cyberspace.org)
Date: 2000-12-04 05:30:15

On Sun, 3 Dec 2000, Nicolas Welte wrote:

> >            325572-01       1541 20 pin gate array {short board)
> 
> Isn't this 40 pin?

Yes, it's a 40 pin.

> >            68766           Motorolla 8K*8 EPROM (definitely pin compatible
> >                            with 2364.  I use them for that purpose.)
> 
> Are either of these still available from somewhere? From time to time I
> could really use those, because in the SX64 the Eprom has often been
> replaced with a standard C64 ROM. And the new owners want it to be in
> original condition of course. And since ROM-EPROM adaptors are not
> easily available anymore as well, I normally end up making my own socket
> adaptor from two or three precision sockets. It takes a while, but looks
> pretty good. Still the proper Eprom would be better. I even have a
> programmer now that can handle them.

The 68764 or 68766 will work.  I see them in the electronics catalogs and
surplus dealers from time to time.  These work for all the Commodore
equipment except the Dual floppy drives. 

> I just remembered the Atari part number in Ruud's list, and just looked
> up something: I have an old CBM 3022 printer that has chips with Atari
> like part number installed: instead of the two 6532 it has two "MOS
> CO-10750 2578" installed. It seems MOS made those for Atari, but too
> many and Commodore put them into printers instead. I also got a phone
> call from someone recently who told me quite excited that his 8250LP
> doesn't have 6532 installed. It also had the "Atari" chips. I wonder
> what 65xx equivalent Ruud's chips have.

If you buy chips in large enough quantities, you can have anything you
want printed on them.  This is probably what Atari did.  I will have to
look out for Atari CO-10750 chips.


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