IIgs RGB Port (was More Questions from a New IIgs User)

[jonINTERNETrelayCHAT@napaVALLEYnet.CLARInet (Jon Bettencourt)]

As you can tell from the subject line, this used to be a post called More
Questions from a New IIgs User. The mouse and game port question appears
to be solved, and I think I figured out the AppleTalk thing.

Now, only one question remains: the RGB port.

So far, I've figured out that it outputs analog RGB and has a frequncy of
15kHz. The Macintosh monitors only work as low as 30kHz, so the RGB
signals are doubled up inside the monitor.

I tried with the Apple Performa Display. It is distorted and makes a high
pitched sound. I knew it wouldn't work, just like I knew BLOADing a
Windows BMP file into HiRes graphics wouldn't work.

I also have an AcerView UVGA monitor hooked up to my PC. Would this
monitor work? If I had the pinouts of the cable from that monitor, I could
try it. But I need the pinouts for VGA. I already have a pinout for RGB.

In the New Questions thread I mentioned doubling the frequency of the RGB
port. Could I do this easily? Would I need to double something else, like
the RGB signals? I know I can ("know I can," _not_ "know how I can," by
the way) modify the _monitor_ to support 15kHz, but I've never opened up a
monitor before and I don't want to touch the wrong terminal and shock
myself. Trying to modify the IIgs would be safer.

Is there a little thing anywhere that you can put between the cables that
would double the frequency for me? Would doubling the frequency even work?

-- 
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jonrelay@napanet.net                             jrelay.cjb.net
An Apple II fanatic since 1998!     S0.5 LIS+++! Suzy+++! M1987
"I can't stand to see you so miserable, Lis. Unless it's from
a rubber spider down your dress. Hmm... that gives me an idea. 
(Pulls out tape recorder) Note for later: put rubber spider down
Lisa's dress. He he he he he."

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