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From: rhyde@ucrmath.ucr.edu (randy hyde)
Newsgroups: comp.sys.nsc.32k
Subject: ICU and the Refresh Clock
Message-ID: <13027@ucrmath.ucr.edu>
Date: 24 Mar 91 17:07:46 GMT
References: <13012@ucrmath.ucr.edu>
Organization: University of California, Riverside
Lines: 15

I copied the instruction sequence from Bruce's monitor *exactly* (the one
which initializes the ICU to generate the refresh clock) and executed it from
RAM under control of the monitor.  It crashed the system.  I ran this code from
location x'10000.  Does this sequence flake out the RAM (I.e., swap the
EPROMs back in)?

On another plane, if anyone knows of a good reference that will explain
user/system memory spaces and how the two talk to each other (e.g., how do
processes and the OS communicate?), I'd sure appreciate a pointer.  I do not
relish the idea of experimenting with code until I get something to work.
Is there an NS/TI32532  programming manual?  I have the hardware manual.
But my programming manual is just for Series 32000 (written in the days of the
32016) and it doesn't discuss some of the newer features like direct exceptions,
etc.
*** Randy Hyde