Date   : Mon, 21 Nov 1988 02:01:00-CST
From   : SAC.CCSO-OLA@E.ISI.EDU
Subject: Mystery North Star problems solved!

Well, gang, I figured out the problems which plagued my North Star Horizon.
In an earlier post, I sent out a plea for help with my 64K North Star, running
NS CP/M 2.2.
       Anyways, the answer was:
               I had 16K of RAM addressed incorrectly.
The 64K is in 4 16K boards.  One of the boards, the 16K at 08000h, had
its address switches set wrong.  (Bloody gremlins!)  I really don't recall
touching the switches, but fiddling around inside it's possible to do nearly
any adjustment by accident!

       The missing 16K, where everybody thought 16K oughta be, caused lots
of problems which would only manifest themselves in programs or data that 
needed that bank.  Hence, the sporadic nature of the bug.  (Gosh! To think
that the machine could limp, let alone run well most of the time, with one-
fourth of its memory absent...amazing!)

                               >JS<
======================================================================
John L. Schuncke, Jr.   SSgt  USAF |  Where I is:
Communications programmer          | Command and Control Systems Office
extrordinaire                      | SAC.CCSO-OLA@E.ISI.EDU
======================================================================
Disclaimer: "C'mon, I'm just an NCO. Do I look
               like I know what's going on?"
                       +----------------+
                       | A> PIP         |
                       | * NUL:=Flames  |
                       | *^C            |
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