BUGG-POWER 150 watt power supplies

[buggie@enzu.unm.edu (stephen e buggie)]

As readers know, I am adapting 150 watt and 200 watt IBM power supplies 
for use with Apple IIgs and IIe.   Made 74 units since April 1996.

100% compatibility so far with all configurations of IIE; Approx 20 IIE 
units shipped.

With about 54 IIGS units shipped, 5 have been returned for interface card 
compatibility problems.  Replacements have mostly solved those problems.

I'm zeroing in on the IIgs compatibility problems.  The three finicky 
cards are only these:

RAMFAST scsi card (especially older RamFast Rev. B)

SECOND SIGHT VIDEO card

TRANSWARP IIGS accelerator     (ZIP-GS loves my power supplies!)


The feature that these cards dislike is called the "no-load auto-off" 
ferature, that about half the IBM models have.  A power supply with this 
feature checks first whether a load (like a computer) is connected; if no 
load is felt, the power supply shuts itself off.  This is a safety 
feature, but because the "finicky three" cards named above don't like it, 
I will ship a power supply that LACKS that feature.  This will give good 
compatibility with RamFast, Seconmd Sight, or Transwarp GS.

Ken Watanabe has tested two of my power supplies that I call "RamFast 
compatible" with various combinations of the "finicky three" interface 
cards.  Interestingly, he reports that these cards will work singly or in 
ANY COMBINATION OF TWO with the Bugg-power supplies.   

	But they won't work when all three cards are used simultaneously in the IIgs.
the IIgs.  But he reports too, that these three cards will not work together
when used with the standard internal Apple IIgs power supply either.  This
suggests to me that there is a rare triple-interaction of incompatibility 
among these 3 cards, independent of power.

BIG QUESTION:   Has _anyone_ ever run RamFast, Second Sight, and 
Transwarp IIgs together at the same time, successfully?


Steve Buggie
200 College Rd.
Gallup NM 87301			buggie@unm.edu