[comp.sys.amiga] 1080 monitor and Apple //gs

rms@gorf.UUCP (Roger M. Shimada) (04/20/89)

I have an Apple //gs system at work along with my personal
Amiga 1000 and 1080 monitor.  The //gs has the Apple RGB
(pretty, with total glare) monitor, which I wanted to see
on the 1000.  So I built a cable to tack on to the 1000 to
1080 cable for the Apple, and voila, the Apple RGB screen
worked just fine on my Amiga.  (For the curious, I didn't
build a 1000 to Apple RGB cable because I didn't want to
find a DB-23, didn't want to hack a DB-25, and had DB-9s
sitting around.)

Eventually, I built a cable to go from the //gs to the
1080.  (Didn't have a DB-9 gender changer to use with my
existing cable.)  I plugged it in and nothing happened.
I triple checked the cable and it seemed fine.  I finally
took a voltmeter to the RGB ports of the //gs and 1000.
It turns out that the 1000 was putting out 4.68 volts and
the //gs only 3.9 on composite sync.  Just for fun, I then
put a battery between the //gs and the 1080 on the sync
signal, and I got an slightly unstable picture.  (Not that
it lasted long.)

Any ideas about how to get an Apple //gs and Amiga 1080
talking RGB to each other?  (Please, no flames about why I
would like to do this.  I'm just a twisted sorta guy.  :-)
Note that the 1080 still has to be perfectly usable with
the 1000 RGB.

--
Roger M. Shimada	{amdahl|hpda}!bungia!gorf!rms		rms@gorf.mn.org