[Coco] commodore 1080 monitor

[Joel Ewy]

Mike, I believe one or both of the sync signals need to be inverted.  I
made an adapter to use a CM-8 on an A1000, and I had to put an inverter
in there.  I don't remember the details exactly off the top of my head,
but that might point you in the right direction.

JCE

mike delyea wrote:
> I picked up a 1080 monitor for next to nothing.  Composite video works
> but I
> can't seem to get the RGB working.  I made a cable using pinouts for the
> monitor I found on the net.  I found 2 pinouts, neither seem to work.  I
> wasn't able to find a specific pinout for the 1080, but found 2 for then
> 1084.  People say they are functionally the same from what I've read.
> Connector is 9 pin D type.
>
> Pin  Description
> 1     Green Video
> 2     Horizontal Sync
> 3     Ground
> 4     Red Video
> 5     Blue Video
> 6     Vertical Sync
>
> Results in green diagonal lines
>
> Pin     Name         Analog Mode         Digital Mode
> 1     GND             Ground                 Ground
> 2     GND             Ground                 Ground
> 3     R                  Red                      Red
> 4     G                 Green                   Green
> 5     B                 Blue                      Blue
> 6     I                   not used                Intensity
> 7     CSYNC        Composite Sync     not used
> 8     HSYNC         not used               Horizontal Sync
> 9     VSYNC         not used               Vertical Sync
>
> Results in red diagonal lines.  I used the analog pinout, but since the
> coco3 doesn't have composite sync I used the hsync and vsync (pins 8 and
> 9).  I checked all the connections with a multimeter and they are OK.
> Suggestions?
>
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