response 1 of 29:

Feb 11 15:44 UTC 1997

Yes.  It should work.  I'm doing exactly that with the 486 board I got
from you.  It's in an XT case with 130W supply, 200M HD, 5 1/4" floppy,
3.5" floppy, CD ROM, 16 bit Sound Blaster, etc.  No problems.

response 3 of 29:

Feb 16 08:23 UTC 1997

My Leading Edge XT uses a different connector for power.  :(  Only one board
going in that case I guess.  

response 5 of 29:

Feb 25 05:04 UTC 1997

Well, the XT also has a dead serial port on it that I can't seem to dissable.
Anyone have the setup utility for the Leading Edge XT with extended video
bios?  I have most of a simple 486 system to play with now, so the LE doesn't
draw much of my attention.

response 7 of 29:

Feb 26 04:39 UTC 1997

Right now I'm missing a floppy, and any kind of fixed disk.  Depending on what
happens I may have a 200 conner to migrate into it.

response 9 of 29:

Feb 26 17:57 UTC 1997

There was a setup utility that I got into, but I have since lost it.
I could do strange things like mess with the interlacing of the display.
There were other usual settings, too.  I have a feeling that the util
needs to be run under certain versions of DOS, and I've been messing
with it in that respect.

response 11 of 29:

Feb 28 04:48 UTC 1997

Phoenix 8088 ROM BIOS Ver 2.13
Copyright 1984, 1985
[ctrl]-[alt]-c doesn't seem to work.  I'm pretty sure I ran a program to get
in, but the only thing that looks anything like it might be it complains of
wrong version of dos or something similar.  Now I can't even find the program.

response 13 of 29:

Feb 28 14:21 UTC 1997

try starting up with the keyboard/mouse unplugged. Or  change something else
that the system will detect as an inconsistency with bios settings. Remove
the battery but you would want to be sure you know how to reinstall the hard
drive, etc.

response 15 of 29:

Mar 4 12:14 UTC 1997

I'm under the impression that, unless this is like a ps2 which does require
a special disk, the cmos will ask to be reset. Not true here?

response 17 of 29:

Feb 1 06:27 UTC 1999

(This is as good an item as any for this...)

I need a power supply that provides 3 volts at ca. 1 A. I read that a
317T regulator will allow adjustment of its output from 1.2 to 27 volts
with a 40 volt source, but the book doesn't say at how low an input
voltage the regulator will work to yield 3 volts (regulated). I would
*think* it would only need the usual couple of volts required by 
similar regulators, but I don't know that for sure. What's the case?

response 19 of 29:

Feb 1 16:20 UTC 1999

THanks, Klaus. The application is to run a tiny 3-V motor. I would think a
filtering capacitor is needed on the input, but wonder if one is needed on
the output. The book also mentions bypassing the adjustment terminal to
reduce ripple. Do you know how that is done?

response 21 of 29:

Feb 1 17:33 UTC 1999

I was going to install the diode. My power source will be a 6.3V x-former
into a bridge rectifier (because I have the parts) so I plan on putting
a big cap on the input. The motor will have inertia, so will produce a
back emf to the regulator if the AC power is cut. 

(While I have your attention - do you have any suggestion on line filters
for motors, which I asked about in another item, to keep the startup
hash off the line? Type? Size?)

response 23 of 29:

Feb 2 17:01 UTC 1999

Uh...I think I've introduced confusion between a) and b). a) is the
tiny 3V "toy" motor, which is not a noise problem. b) is a furnace blower
motor that is somehow introducing "hash" into the telephone lines on
startup. The questions re a) have been resolved. Putting 0.1s on b)
can short out carrier-current controls, so I'd prefer a line filter
(which has inductance on the line side). b) is what my second question
in #21 was about.