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Path: severus.mbfys.kun.nl!rhialto
From: rhialto@mbfys.kun.nl (Olaf Seibert)
Newsgroups: comp.sys.cbm
Subject: Re: CBM PET 3032 information wanted
Date: 9 Sep 1995 02:05:40 GMT
Organization: University of Nijmegen, The Netherlands
Distribution: world
Message-ID: <42qspk$7um@wn1.sci.kun.nl>
References: <421bvb$3ij@tuegate.tue.nl> <42bq1a$n34@news.cc.utah.edu>
<1995Sep3.124405@nyssa.swt.edu> <DEKEBI.JKq@novice.uwaterloo.ca>
NNTP-Posting-Host: severus.mbfys.kun.nl
In <DEKEBI.JKq@novice.uwaterloo.ca> dfevans@bbcr.uwaterloo.ca
(David Evans) writes:
> Once you find the hardware way to do the reset, I seem to recall that the PET
>reset sequence destructively tests memory. Poke something recognizable
>someplace and do sys 64790. My PET's not near me, so I can't test it for
>myself.
This is true, but there is help. If you hold down the diagnostic
sense line (user port pin 5), you'll end up in the monitor instead
of doing the full reset thingie. A PET at our school's computer club
had a smart thing with a switch wired to reset, and diag through a
condensator. If you flicked it quicky it would reset; if you kept the
switch in the alternate position a few seconds it would decharge the
condensator, pull down diag, and when switched back you came back in
the monitor.
-Olaf.
--
Copyright 1995 Olaf 'Rhialto' Seibert. All Rights Reserved.
X/ You are not allowed to read this using any kind of Micro$oft product.