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Date: Wed, 23 Oct 91 13:41:57 -0700
From: Francis Taylor <narf@u.washington.edu>
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To: glove-list@karazm.math.uh.edu
In-Reply-To: Lance Norskog's message of 22 Oct 91 17:09:19 PDT (Tue) <9110221709.AA22019@roi.ca41.csd.mot.com>
Subject: PG controller board
Reply-To: narf@hitl.washington.edu
Regarding getting +5 from signal lines on the printer port: you really
don't want to drag on the output lines in this way, unless you're
going to consume close-to-zero current. Look at the high-level current
output ratings for an LS244 and you'll see what I mean.

My favorite hack is to connect to a disk drive power supply connector
(the 4 pin white plastic guys).  You get lots of regulated +5 and +12.
It's usually pretty easy to snake an extra floppy cable out through a
hole in the back of the machine.

If you don't have an extra power connector, you can get a Y-adapter at
any half-decent computer store.

If you can't et to a floppy power cable, then you can use a plug-mount
power supply, and put the floppy power connector on the end of it, so
the interface can run from either.