Re: Apple III RGB?

[Alan Tuttle <news001@macgeek.org>]

Here's the pin-outs for the Apple III DA-15 Male video connector:


Pin #    Signal Name     Signal Description
-----    -----------     ------------------
  1          SG          Shield ground
  2        XRGB4         TTL output with instantaneous color
                         information; linear-weighted sum of these
                         four signals will form a true 16-color RGB
                         video signal
  3        SYNCH         Composite sync signal (negative-going)
  4         PDI          Not used
  5        XRGB1         See pin 2
  6         GND          Power and signal ground
  7         -5V          -5 volts, 200ma maximum current drain
  8         +12V         +12 volts, 500ma maximum current drain
  9        XRGB2         See pin 2
 10        XRGB8         See pin 2
 11        BWVID         Black and white composite video; NTSC-
                         compatible signal with negative-going sync;
                         1 volt peak-to-peak into a 75-ohm load
 12         NTSC         Color composite video; NTSC-compatible signal
                         with negative-going sync; 1 volt peak-to-peak
                         into a 75-ohm load
 13         GND          Power and signal ground
 14         -12V         -12 volts, 200ma maximum current drain
 15         +5V          +5 volts, 1 amp maximum current drain

And here's the pin-outs for the Apple IIgs RGB video connector:

  1         Signal ground (RED)
  2         Analog Red video
  3         Composite sync
  4         No connection
  5         Analog Green video
  6         Signal ground (Green)
  7         -5 volts DC
  8         +12 volts DC
  9         Analog Blue video
 10         No connection
 11         Sound (1 volt peak-to-peak)
 12         Composite video output
 13         Signal ground (Blue)
 14         No connection
 15         No connection
(shield)    System ground


Someone else will have to come up with the pin-outs for the Apple RGB
Display.



In article <7ohs3v$j9i@news-central.tiac.net>, Stefan Miganowicz
<nrsdpms1@tiac.net> wrote:

> Now that I've got this Apple III running in the collection, I think I
> remember that someone said that the Apple RGB monitor would work on the
> Apple III. What does it take to make it work with an Apple III?
> 
> 
> 
> Thanks,
> Stefan