On 30 Aug 2007 at 17:08, Chris M wrote:
   There were dookickies that took care of the mode
 setting. Some had dials, others dips. I used to have a
 bunch, may have come across 1 in recent history. But
 mine were a bridge between duh Mac and a VGA-BNC
 cable. The info on how to *dial up* a specific video
 mode (by shorting 2 pins) should be readily available
 on duh net I would think. Macs (older ones anyway) had
 to select a video mode at boot, or no video signal
 would output. 
   I'm surprised to hear that *PMs* don't output
SOG.
 Depends what you mean by PM. I thought the earlier
 models did, but what do I know. 
Starting with the 9600, apparently, so the older series PM's
apparently still generate SOG:
http://developer.apple.com/documentation/Hardware/Developer_Notes/Maci
ntosh_CPUs-PPC_Desktop/PPC_7300_7600_8600_9600.pdf
CSYNC (Pin 3 on the Mac video connector) is still available, however.
I went for a "quick and dirty" and just tied that to Green with a 470
ohm resistor.  It'll do for now.  Nice crisp display.
I forgot how darned heavy those old HP monitors were.  I hope the
plastic case top will support it. :)
Cheers,
Chuck