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Article #1892

6811 emulator first hack

#1892
From: Ted Dunning
Date: Tue, 26 Jan 1993 21:08
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failing to hear about another version of a 6811 emulator, i wrote one
last night (and part of sunday night).  it is still rough, has no user
interface, doesn't do multiply, doesn't count cycles for all
instructions, doesn't let you modify memory or registers and doesn't
support the semantics of the $1000 locations at all.

what it does do right now is let you load a file in s19 format and
single step it.  adding the missing features should be relatively
trivial.  i am sure that there are some (several?) instructions that
don't work correctly, and that there are probably other problems as
well.   it should also be absolutely trivial to port to any machine
that supports ansii c and 32 bit integers.  ansii c and 16 bit ints
should be an easy port.  there is a relatively large (2000 line) case
statement that might give some compilers fits.

this software is not ready for prime time, but i would like to find
somebody who is willing to trade early access for testing and possible
mods. 


any takers?
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From: ted@nmsu.edu (Ted Dunning)
Newsgroups: comp.robotics
Subject: 6811 emulator first hack
Message-ID: <TED.93Jan26140815@lole.nmsu.edu>
Date: 26 Jan 93 21:08:15 GMT
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