Afloyd.200
net.general
utzoo!decvax!harpo!floyd!trb
Thu May 6 12:24:13 1982
debugging microcode in writable control store
There is a project here that is going to be designing distributed
multiprocessing hardware using 2901-like processors and writable
control store. They are looking into hardware and software design
methods that will make the debugging effort as painless as possible.
(The obvious real estate war between hardware, software, and mechanical
engineers is in full swing.)
They seem to be chasing their tails on several questions:
They are looking into "debugging boxes" like the STEP Engineering box
and the HP 64000 Logic Development System. They aren't sure whether
they'll be able to use these things. They're worried about interfacing
problems. Please mail me about your experience with these or other
such units, or if you've designed your hardware to perform such
functions, I'd like to hear about that too.
They don't know how to write a debugger, they don't have experience
with what goes into one, but they've been told that it would be nice to
have examine/deposit, single step, etc... Tutorial information, books
on the subject, user documentation which describes the features of
"good" debuggers, would be appreciated. (I kinda loved our hacked
up version of TOPS-10 DDT, but there must be other low level debuggers,
or are there...)
Andy Tannenbaum Bell Labs Whippany, NJ (201) 386-6491
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