Re: Question

From: Gerrit Heitsch <>
Date: Sat, 23 Nov 2013 13:17:30 +0100
Message-ID: <>
On 11/23/2013 12:11 PM, Julian Perry wrote:
> The 8563 would have to still clocked at 16Mhz.
> If the clock for the 8563 were changed, the VDU would be unable to
> sync to the 8563 timings, and would display a teared and/or rolling
> image.

If the clock is not too far off, an analog CRT monitor would still be 
able to sync to it. 16 x 1.02 MHz is just 16.32MHz pixel clock instead 
of 16 MHz. That's just 2% difference which is inside the window a 
monitor should be able to sync to. A stubborn one might need some manual 

The question is, will the 8563 tolerate this overclocking?


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Received on 2013-11-23 13:00:06

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