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- From: umkirk07@ccu.umanitoba.ca (Kirk)
- Subject: Keyboard Problems: A20 Ghost!
- Message-ID: <By56HF.Jwn@ccu.umanitoba.ca>
- Sender: news@ccu.umanitoba.ca
- Nntp-Posting-Host: ccu.umanitoba.ca
- Organization: University of Manitoba, Winnipeg, Canada
- Date: Sun, 22 Nov 1992 23:56:02 GMT
- Lines: 46
-
- I have a 386-Sx-16Mhz clone board and am experiencing the A20 GHOST problem.
- The computer has the AMI 386-SX BIOS chips.
-
- Problem Definition:
- -------------------
- The A20 Ghost problem is when you are typing away in lower case, and
- suddenly the characters are being typed in upper case without you touching
- the shift key or caps lock key.
-
- You know that you haven't screwed up when the Caps Lock indicator light is
- off, but the characters being typed are in upper case!! Also, numbers
- sometimes appear when you use the keypad as cursor keys. ie. if you move
- left, you sometimes get a 4 because it is the other function on the keypad.
-
- (Hence the name A20 Ghost - A20 is a keyboard interrupt and the ghost is
- holding down the shift key - I assume you know what a ghost is.)
-
- This problem seems to only occur while in Word Perfect v5.1 for DOS.
- It is a real pain in the ass because when the Ghost is playing with
- the shift key, all of the function keys are screwed too. The same happens
- with the Alt keys and the Ctrl keys, although not to the same degree as
- the Shift key.
-
- Also, the problem seems to only occur when I have 1 Meg of extended memory
- installed. When I remove the 1 Meg of extended (which leaves the 1 Meg of
- conventional memory) the problem tends to disappear. Not really a
- solution, as I need extra RAM for software these days.
-
- I have made sure that the A20 GATE option in CMOS is ENABLED.
-
- When the keyboard is in "Ghost Shift mode", you can return the keyboard to
- its original state by hitting the left shift key once to initialize it.
- Then all returns to normal for a short period of time.
-
- I have seen some documented articles and so-called fixes on some ftp
- sites, but none seem to cure the problem. I have even purchased a new
- keyboard, as it was supposed to help - NOT!!
-
- If you know of any solutions to this Ghost problem, please E-mail me!
- (Sorry if my explanation was lengthy but you know all about it now)
-
- Many thanks,
-
- Dale Kirk
- umkirk07@ccu.umanitoba.ca
-
-