> At 19:29 2/3/98 +0300, you wrote:
> >But, of course, MY PGA did. I've got a question I've been dying to ask: Why
> >the heck do (S)VGA montiors have 3 sets of pins, and "older" monitors only
> >have 2?
>
> A burning question, to be sure, because the little pins in those 3-row
> D-connectors are SO fragile. I've never understood why, if the SVGA
> connector had to be 15 pins (which it doesn't anyway,) it couldn't have
> been the longer, 2-row, 15-pin D-connector that's used for joysticks.
>
Tidbit: Three signals/ground shield pair for RGB (6 pins), 2 pins
for H and V sync, 3 pins for INFO status telling what kind of monitor
attached to video card and one diagnostic pin (when you pull the
video plug off, you get flickering white raster, which is
diagnostic). Also few more grounding pins and 2 is left blank. That
is original IBM's design. Now in newer PnP monitors and newer video
adapters uses 4 pins plus normal 9 pins so win95sux can talk to
monitor for info and autoconfigure for that monitor after the fact.
But those new PnP monitors will work with older cards (no PnP).
So we do need that fragile 15 pin connectors. But with care, you can
have one that last for years from plugging/unplugging. The mistake
was idiotic users forcing all ham-fist it in too hard in bit wrong
way or backwards. Simple solution: look at both shells to see right
way around and that famale one is really VGA connector, fit straight
in and push in, if you feel something hard and connector is not yet
all the way in yet, STOoOPP!
Jason D.
> __________________________________________
> Kip Crosby engine_at_chac.org
> http://www.chac.org/index.html
> Computer History Association of California
>
>
>
>
email: jpero_at_cgo.wave.ca
Pero, Jason D.
Received on Tue Feb 03 1998 - 08:44:58 GMT