[Coco] Using a Commodore 1084S with the CoCo

Joel Ewy jcewy at swbell.net
Wed Dec 19 00:05:47 EST 2007


One other thing to think about.  I use my CM-8s with Amiga 1000s and
A500s, and I have to invert one (or both?) of the sync signals to make
it work.  So I suspect you'd need to do the same thing going the other
way around.  I put a TTL inverter chip in a D-sub housing.  I don't
remember which sync signal(s) need(s) to be inverted off the top of my
head, but I could probably figure it out if you get stuck.  But I can
confirm that an Amiga will work with a CoCo RGB monitor this way, so you
should be able to get the reverse to work too.

JCE

Bob Devries wrote:
> Diego,
> as far as I know, the intensity is only used if the monitor is used in
> its digital mode, not analog. I seem to remember that a straight
> through cable works fine. One of the other commodore monitor required
> composite sync, but I don't remember which thta was. I suspect it was
> the earlier one with the SCART socket.
>
> My suggestion? Try it and see.
>
> -- 
> Regards, Bob Devries, Dalby, Queensland, Australia
>
> Isaiah 50:4 The sovereign Lord has given me
> the capacity to be his spokesman,
> so that I know how to help the weary.
>
> website: http://www.home.gil.com.au/~bdevasl
> my blog: http://bdevries.invigorated.org/
>
> ----- Original Message ----- From: "Diego Barizo" <diegoba at adinet.com.uy>
> To: "CoCo List" <coco at maltedmedia.com>
> Sent: Wednesday, December 19, 2007 11:19 AM
> Subject: [Coco] Using a Commodore 1084S with the CoCo
>
>
>> I know that Cloud9 sells the cord, but for me right now, $20+SH could
>> be 20.000 :-(
>> That's why I would like to know if it's just a matter of making a pin
>> to pin cord.
>>
>> I found this as the monitor pinout:
>>
>> Pin   Digital Mode
>> 1    Ground
>> 2    Ground
>> 3    Red
>> 4    Green
>> 5    Blue
>> 6    Intensity
>> 7    n/c
>> 8    Horizontal Sync
>> 9    Vertical Sync
>>
>> The CoCo has pin 6 as polarity(No pin) and audio on the 7.
>> Would I have to do something fancy for the Intensity pin in the monitor?
>>
>> Thanks,
>> Diego
>>
>>
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>
>
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