Re: CBM900 to SVGA monitor

From: Gerrit Heitsch <>
Date: Sat, 26 Jul 2014 18:42:05 +0200
Message-ID: <>
On 07/25/2014 09:03 AM, Michał Pleban wrote:
> Hello!
> smf wrote:
>> "Graphics and Sound Two versions, according to Peter Kittel; the
>> graphics version was 1024x800 monochrome (72Hz refresh on the monitor)
>> and intended as a workstation; the server variant was character display
>> only. Graphics powered by the 8563 VDC."
> As we can see, this is wrong: workstation is not powered by the VDC, and
> the refresh rate is 60 Hz not 72 Hz :-)

Also, what is the maximum refresh rate and resolution the VDC can 
produce? The clock is 16 MHz and you have 64 KB display RAM max (as far 
as I know).

That doesn't really let you do much. At least not 640 x 400 in 60 Hz, 
unless you go interlaced.


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Received on 2014-07-26 17:00:03

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