CPS 104 (Ramm)
                     Fall Semester 1995
                   Homework Assignment #5

Due Monday, Oct. 9

Write an interactive assembler program that emulates an
extremely simple four-function calculator.  Also assume that
all values will fit into a 32 bit register.

To keep things simple, have the syntax such that the
operation code is always entered first.  Include a "load" or
"enter" operation to get something into your "accumulator".
After each operation have the contents of the accumulator
displayed by a routine named decout (which you could have
written to test out your last assignment, but didn't need to
since syscall #1 worked fine for decimal).  Have your decout
routine show negative numbers correctly.  Use your decin
routine to enter numerical information.

Use a modular design with lots of procedures.  Make sure
that there are plenty of messages each step of the way so
that the user of your program knows what to do and what is
happening.

OPTIONAL: Add one or more additional features such as
memory.  Allow change to another base such as octal or
hexadecimal.





























                     September 30, 1995