sim6811(1) BSD General Commands Manual sim6811(1)NAMEsim6811 — very simple and crude simulator for the 6811
SYNOPSISsim6811 s19-file
DESCRIPTION
s19-file is a Motorola s19 assembler output file
some instructions aren't there yet (notably converning multiplication and
interrupts) and the interface only allows stepping. this should be eas‐
ily rectifiable, however, and the simple structure should make grafting
on a graphical interface quite simple.
to run the simulator, just provide the name of an object file on the com‐
mand line. the object file must be in s19 format, and must include a
reset vector in order to tell the simulator where to start execution.
simulation proceeds one instruction at a time, with a register and page
zero memory dump being performed at each step.
several simple commands are supported, but additional commands to modify
memory, cause interrupts and simulate the special registers would all be
nice, and relatively easy to add.
COMMANDS
The current sim6811 command set includes
l [address [n]]
disassemble n instructions starting at address
g [address [n]]
go starting at address for n steps.
s [n]
step n times (n=1 default)
b [address[cnt]]
set a breakpoint, which will stop cnt times
t [address[cnt]]
set a temporary breakpoint.
<empty-line>
step once
HISTORYsim6811 was written by Ted Dunning <ted@nmsu.edu>. This manual page was
created out of various C-sources by Eric L. Hernes <erich@rrnet.com>.
Some example sources and s19 files can be found in
ftp://crl.nmsu.edu/pub/non-lexical/6811
4th Berkeley Distribution June 5, 1993 4th Berkeley Distribution
