[Coco] commodore 1080 monitor

[tonym]

I remember doing the SAME thing years ago - CM-8 on an Amiga 500.
I had to create something with a chip or two in the middle, to use the CM-8 on the
A500.

the 1084S should be the same, except I think a couple of the pins also carry the sound?
Don;t remember now if the DB23 on the amiga side also included sound, or if it was the standard
RCA's out of the Amiga into the 1084S.


Tony 

-----Original Message-----
From: Joel Ewy jcewy at swbell.net
Sent 7/26/2007 6:35:47 PM
To: CoCoList for Color Computer Enthusiasts coco at maltedmedia.com
Subject: Re: [Coco] commodore 1080 monitor

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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