On Jun 23, 14:53, Philip.Belben_at_pgen.com wrote:
> Ethan Dicks wrote:
>
> > Now, my junk box is *much* deeper. I could probably assemble an entire
> > PET PCB and Amiga PCB, just from spares. Thankfully, I don't have to.
> You mean you actually have spare 6520 chips? How many can you send me
and how
> much do you want? I have at least one dead one in one of my PETS.
They're not hard to get: Rockwell still make 6520s (or at least, suppliers
here still list them), and Hitachi and SGS-Thomson make 6821s, which are
exact replacements (the 68A21 is slighlty faster at 1.5MHz and the 68B21 is
2MHz, but that won't matter). You can get them from Farnell in the UK.
We always used to replace the 6520s with 6820s or 6821s if they failed, as
the 682x seemed to be more robust.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Received on Wed Jun 23 1999 - 17:18:24 BST