Fixing a PET?

From: Mark Gregory <gregorym_at_cadvision.com>
Date: Mon Sep 27 14:26:44 1999

On Monday, September 27, 1999 12:10 PM, Bill Yakowenko
[SMTP:yakowenk_at_cs.unc.edu] wrote:

> One of the first things to do when you have a screenful of the
> wrong characters is to whip out an ASCII chart, and look at the
> binary codes for the characters you've got vs. the ones you
> expected. Very often the problem is a single-bit change, which
> narrows down the source of the problem. For instance, the
> difference between upper- and lower-case ASCII characters is a
> single bit.
>
> Cheers,
> Bill.
>
>
> On Sat, 25 Sep 1999, Gareth Randall <gwr_at_easynet.co.uk> wrote:
> ] Hi guys,
> ]
> ] I'm new here, so be gentle! =;-)
> ]
> ] I'm hopefully about to acquire a PET 8032 - the first PET I've ever owned
> ] (I was six years old when they first came out). I'm told that it boots into
> ] Basic 4.0, but the boot details are shown in lower case with the odd
> ] incorrect character. Also, when typing, some characters come up on the
> ] screen differently to the ones actually typed.
> ]
> ] The vendor suggests it may just need a clean and the I/O chip re-seating -
> ] but if it's something more complicated, is it still possible to buy
> ] replacement chips? And, thinking longer-term, are replacement screens
> ] possible to find these days (e.g. are they a standard size that you can
> ] still buy off-the-shelf)?
> ]
> ] Any suggestions gratefully received!
> ]
> ] Gareth
>
>

For the 8032, you'd need a "PETSCI" chart - Commodore didn't adhere completely
to the ASCII standard coding. I have a copy of the PETSCI codes, but they're at
home, and I'm not. If anyone needs them, e-mail me and I'll be happy to send
them to you, or post them.

Mark.
Received on Mon Sep 27 1999 - 14:26:44 BST