Difference between revisions of "CSC103 Homework 3 2013"
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| + | =Problem 1= | ||
| + | <br /> | ||
| + | <center>[[Image:CSC103_hw3_1_2013.jpb]]</center> | ||
| + | <br /> | ||
| + | The program above is badly commented. Your assignment is to add ''comments'' to the program and give names to the | ||
| + | different variables. A comment is just some documentation following a semi-colon. | ||
| + | |||
| + | Use the program below as an example of what you should emulate. Do not put my name on your listing, but yours instead. | ||
| + | |||
| + | <source lang="asm"> | ||
| + | ; sum of 2 integers | ||
| + | ; D. Thiebaut CSC103 | ||
| + | ; The program takes 2 variables stored in memory at | ||
| + | ; Address 10 (and up) computes their sum and stores | ||
| + | ; it in a 3rd variable. | ||
| + | |||
| + | @0 ;code section starts at address 0 | ||
| + | start: lod var1 ;AC <- 3 | ||
| + | add var2 ;AC <- 3+5 = 8 | ||
| + | sto sum ;sum <- 8 | ||
| + | hlt | ||
| + | |||
| + | @10 ;data section starts at Address 1 | ||
| + | var1: 3 | ||
| + | var2: 5 | ||
| + | sum: 0 | ||
| + | </source> | ||
Revision as of 14:05, 25 September 2013
--D. Thiebaut (talk) 08:34, 24 September 2013 (EDT)
Problem 1
The program above is badly commented. Your assignment is to add comments to the program and give names to the
different variables. A comment is just some documentation following a semi-colon.
Use the program below as an example of what you should emulate. Do not put my name on your listing, but yours instead.
; sum of 2 integers
; D. Thiebaut CSC103
; The program takes 2 variables stored in memory at
; Address 10 (and up) computes their sum and stores
; it in a 3rd variable.
@0 ;code section starts at address 0
start: lod var1 ;AC <- 3
add var2 ;AC <- 3+5 = 8
sto sum ;sum <- 8
hlt
@10 ;data section starts at Address 1
var1: 3
var2: 5
sum: 0
