Re: RGB & Sega

[jkeyerleber@bailey.com (John P. Keyerleber)]

ao072@FreeNet.Carleton.CA (Sam J. Pronesti) wrote:

>Some time ago I ran across a posting that explained the steps for
>using the apple RGB monitor with the sega system.  I'm now using a
>VGA monitor and second sight with the apple ][GS and would like to
>hook up the RGB to my son's genesis system.  It would give better
>resolution than a TV monitor.  Unfortunatly I did not capture the
>post.  Are there any tech wizards out there with some capsules of
>wisdom on this subject?  Any help would be appreciated!

Hi Sam:

I had the following in my files:
-------------------------------------------------------------------------------
 
From: dgb@owlnet.rice.edu (Dennis Gale Brown)
Newsgroups: rec.games.video.sega
Here's how I hooked up my Genesis to my NEC Multisync II:
 
First, I went to Radio Shack and bought the following parts:
 
274-026 8-pin DIN plug (Genesis end)
276-1427 9 Position D-shell MALE connector
276-1513 Hood for above
278-775 9-conductor wire (sold by the foot; I got 3')
 
Then I checked out the Genesis Monitor pinout from the FAQ:
(looking at port itself)
 
               1 .  8  . 7
               2 .  .  . 6
                3 .   . 5
                  4 .
 
(these numbers probably aren't correct but they match my list below!):
1 - Negative Combined Sync
2 - Composite Video
3 - Green
4 - Ground
5 - +5 Volts
6 - Audio
7 - Red
8 - Green
 
Then I checked out the pinout for the Multisync:
 
     1 2 3 4 5
     . . . . .
      . . . .
      6 7 8 9
 
2 - Sync 
3 - Blue (analog)
4 - Green (analog)
5 - Red (analog)
6 - Ground
 
(again, numbers are probably wrong, and this isn't the full pin-out,
but it's enough)
 
After this, it's just a matter of putting things together. Using the
8-pin DIN connector requires some soldering, but the 9-pin connector
chose can simply have the pins clamped onto the wires.
 
One note: You may have to bend the pins in the 8-pin connector
slightly to make it fit in the Genesis. I had to bend the middle pin
down a bit and the two top pins outward. After that, no problem.
 
Final word: Do this at your own risk. This probably isn't the best way
to go about this, but it does work. If your equipment blows up, don't
blame me!
 
Have fun...
 
BTW, If you have a different monitor, I can't help you. All I can say
is that if it works with an Amiga 500/1000/2000, it probably works
with the Genesis (similar if not identical scan rates), provided you
have the correct pinouts and connectors...