ICS 312 TA Homepage Fall 2009

General Information

TA:	Jade Cheng 成玉 (yucheng@hawaii.edu)
Instructor:	David Pager (pager@hawaii.edu)
Course:	Machine-Level and Systems Programming
TA Office:	POST Building Room 303-3 (cubicle 3)
TA Hours:	Tuesday 11:00 to 12:00
	Thursday 11:00 to 12:00

Course Requirements

TBD

Homework Assignments

If you do not complete homework assignments sufficently, you would automatically fail the course. Otherwise, homework does not affect your grades. Homework submissions will be recorded and posted on this site using the student codes provided by the TA.

Please submit your homework assignments by 11:59 pm on the posted due date. Homework received on time will receive 10 points. One point will be deducted for late submissions. After one week homework will not be accepted.

To facilitate the grading process, please try to follow the following guidelines when submitting assignments.

Email submissions

Assignments should be submitted via email using your UH UNIX email account. The TA will not accept any other form of submissions.
“To” field of email

Assignments should be submitted to yucheng@hawaii.edu. Please do not send the assignments to the professor.
“Cc” field of e-mail

Please cc the email to youself. That way, if the TA doesn’t get your email for some reason, you have proof that it was sent.
Subject of email

Please use the following pattern for the subject of your email.
```
[312] homework number
```
For example: [312] homework 1
Body of email

Please copy and paste the contents of the homework in the email body. That way, the TA will receive your work even if the attachment is rejected.
Attachments

Plain text files are preferred. PDF, JPG, and PNG files are also accepted. Please do not send Microsoft Office documents.
Multiple submissions

You may submit an assignment more than one time. Only the most recent assignment submitted will be evaluated.

Grades

The grades for homework assignments, programming projects, in-class quizzes, and the exams will be posted using the student codes provided by the TA. If you lose or forget your code, please contact the TA.

Click your student ID to view your grades.

Homework and Quiz Solutions

The solutions of some of the homework assignments and the in-class quizzes will be posted in this section. Since late submmisions are allowed, the solutions will not be available until a couple of weeks after the due date.

hw-13.asm

;; This program asks the user how many numbers are to be added, and input the
;; user's response, which we will call n.  Now go into a loop which is iterated
;; n times, and in each iteration asks the user to enter a number.  The program
;; addes up n times and, finally output: The sum of the numbers enters is:
;; followed by the sum.  Program does not limite the input numbers to be less
;; than 10.  Program does not use any `int 21h` functions.
            include pcmac.inc
            .model         small
            .stack  100
            .data
prompt1     db      0ah, 0dh, 'Enter a number to indicate the iteration times: $'
prompt2     db      'Your number: $'
result      db      'Sum of your numbers is: $'

        .code 
prog    proc
        extrn       putdec : near   ; compile it with util.lib
        extrn       getdec : near
        mov         ax, @data
        mov         ds, ax

        _putstr     prompt1         ; print prompt for the iteration number
        call        getdec          ; obtain user input number
        mov         cx, ax          ; cx is used as the loop counter
        mov         bx, 0           ; bx is used to store the summation
startofloop:
        cmp         cx, 0           ; end loop if counter reaches 0.
        je          endofloop
        dec         cx              ; decrement loop counter
        _putstr     prompt2         ; print prompt for each number to add
        call        getdec          ; obtain user input number
        add         bx, ax          ; addes up to bx
        jmp         startofloop     ; loop again.
endofloop:
        _putstr     result          ; print out the result, which is in bx
        mov         ax, bx
        call        putdec
        _putch      0ah             ; print a blank line

        mov         al, 0           ; return code of 0
        mov         ah, 4ch         ; function code for exit to os
        int         21h
prog    endp
        end         prog