CBM8032 - wobbly screen

From: Pete Turnbull <pete_at_dunnington.u-net.com>
Date: Fri Sep 28 16:33:59 2001

On Sep 28, 18:26, Tony Duell wrote:

> Now, the 8032 uses a 6845 CRT controller chip IIRC. It sets the sync
> frequencies. Maybe it's configured differently on UK and US machines.
> Maybe, therefore, one of the ROMs is different between UK and US machines
> (I don't recall any setup links on the CPU board to configure this, as
> some other manufacturers used). Does anybody know if UK PETs have 50Hz
> vertical display systems? If they do, then you might need a dump of the
> appropriate ROMs.

It does use a 6845, and it does still run at 60Hz. At least, the ones I've
worked on are 60Hz and I think the 4000 series did too; I don't know if
that changed in any later models.

Pete						Peter Turnbull
						Network Manager
						University of York
Received on Fri Sep 28 2001 - 16:33:59 BST

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