Apple IIGS for parts

From: Arthur E. Clark <aclark_at_enviroweb.org>
Date: Sun Aug 5 19:02:36 2001

At 02:05 PM 8/5/2001 -0700, Mike Ford wrote:
> >>I am looking for a monitor cable to fit an apple IIgs computer. The cable
> >>that I need is a 15-pin (2 row) double ended cable. The monitor is a 12"
> >RGB
> >
> >The Apple IIc and Mac's also use 15p cables. Any chance all three
> >are compatible?
>
>No. The IIc is totally weird and actually must have an active adapter
>connected to it, and the Mac and IIgs are different.

The RGB video specs for the Mac, IIgs, //c, //e and /// series machines are
all different. So RGB cables and RGB monitors designed for one series do
not work on any of the others. There is an esoteric exception, which is
that a RGB IIgs monitor will display RGB output from a ///. However, the
colors are reversed. I don't think I've ever seen a //c hooked to a RGB
monitor, so I've never learned what's required.

IIRC, the RGB specs for the //e, //c, IIgs, and /// series were all
variations on an odd analog RGB system designed by Apple. I believe that
starting with the color Macs, they embraced a more traditional, but still
proprietary, digital TTL spec.

I welcome and encourage any corrections.

Arthur Clark
Received on Sun Aug 05 2001 - 19:02:36 BST