Re: Re: Re: PET video to VGA

From: Anders Carlsson <>
Date: Thu, 19 Dec 2013 13:21:49 +0100
Message-ID: <7264170A35C04CA3910B9536861DEE4B@ryds>
Hervé wrote:

> - What are registers values supposed to be OK ?

Perhaps André:s site can help you?

It seems to that changing the register R2 would move the image to either 
left or right. The second page has actual register values, see the ones for 
CS/A65 as those were tuned for a 50 Hz TV. André also has links to the 
composite video adapters and mentions that the CRTC values need to be 
changed in order to get them to work.

> - Locations, in this hacked ROM, to patch to change those registers values 
> ?

A quick hunt with the xpet monitor suggests $E72A (lower case?) and $E73C 
(upper case/graphics?), but I'm not entirely sure.

Best regards

Anders Carlsson

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Received on 2013-12-19 13:01:09

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