Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!samsung!tristar.samsung.com!reinhard
From: reinhard@tristar.samsung.com (Steven Reinhardt)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Sperry IT & 101-key kbd
Message-ID: <21217@samsung.samsung.com>
Date: 26 Mar 91 22:40:00 GMT
Sender: news@samsung.COM
Reply-To: reinhard@tristar.samsung.com (Steven Reinhardt)
Organization: Samsung Software America, Inc.
Lines: 31


I have an aging Sperry IT that I'm trying to keep usable.
I recently got a 101-key keyboard (a Fujitsu) that I'm
currently using.  However, I have an annoying problem:
when I power up the machine, about half of the time the
POST prints "E-KB20" and beeps many times.  The machine
boots OK otherwise, and the keyboard works OK except for
the cursor and numeric keypads, which seem to have
swapped identities (e.g. if Num Lock is on and I press
the left arrow key on the cursor keypad, I get a '4'; the
numeric pad causes cursor motion regardless of the state
of Num Lock).

So the obvious question is: is there anything I can do
between the extremes of living with it and buying a new
motherboard?  My proms say "V1.48F", in case there are
any Sperry IT gurus out there.

I saw a posting a while ago that mentioned that the kb
could be powering up too quickly, missing a handshake
with the system; the solution being to put a larger
capacitor on the reset line of the ctrlr in the keyboard.
I did open my keyboard but could not find a data sheet to
tell me which pin on the 8051 is the reset line.

Thanks,

Steve

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reinhard@samsung.com