[Coco] Re: [Color Computer] Re: Can I use a CM-4 on the Coco 3

[Mike Pepe]

Sylvain De Chantal wrote:
> 
> 
> Ooohhhh...Cool! Mike, do you know how this can be done (modify the CM-4 
> to work as a Analog RGB monitor) ? This would be greatly appreciated! =)
> 

Without a detailed schematic it's impossible to say for sure, but 
essentially the process would involve removing/bypassing the digital 
input circuitry and feeding the analog section of the monitor. It may be 
trivial or complex depending on the circumstance.

Also note that technically, the CM-4 and other TTL monitors may not work 
at all due to the analog signal from the CoCo 3 being below the 
threshold voltage for a TTL circuit. Also the polarity of sync pulses 
may be wrong, etc.

I did turn a CM-8 into a CGA monitor with a few resistors and diodes 
when I moved into PC-land, so perhaps the sync is close enough to work.



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