New monitors on old machines

[Jim Leonard]

I just read some post on the 'net regarding an adapter as possible: 
"Converting CGA digital RGBI signals to VGA analogue signal just takes 
few resitors. That matches the RGB signals from digital to analogue.
Been there, done that."

This smells funny.  Is that all it would take?  A double-scan converter 
is typically $100 and has many more components (for example 
http://www.highway.net.au/parts/converters/1488.html)

Chuck Guzis wrote:
> On 1 Nov 2006 at 20:53, Richard A. Cini wrote:
> 
>> I had an old Multi-Sync 2 monitor which had a 9-pin (DE9) for TTL and a 9-15
>> pin adapter dongle. I remember using it on an old IBM and a Compaq with a
>> VGA card. I know I don't have the monitor but I'll have to look in my
>> "stock" for the adapter and see what's in it.
>>
>> You are right, though. The T2K sync frequencies are very low...26.4k I
>> think, but I'd have to check my notes.
>  
> There were several of these types of monitors.  Mitsubishi had a few 
> DiamondScan models that had RGB BNC connectors, as well as TTL and 
> analogue connections--and there were a few switches on the rear of 
> the unit to select what was what, along with different adapter 
> cables.
> 
> I still have one that I use with a PAL VHS VCR and a decoder to watch 
> my old tapes of the Edinburgh Tattoo...
> 
> Cheers,
> Chuck
> 
> 

-- 
Jim Leonard (trixter at oldskool.org)            http://www.oldskool.org/
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