HW05: Arrays and Text Files due Mon 07 Oct 23:59

Purpose

Allowed and Disallowed Resources

• The assembly command cheat sheet (2 pages) handed out in class. https://josephus.sergeantservices.com/classes/al/source/pdf/IntelCodeTable.pdf
• The ASCII chart handed out in class. https://josephus.sergeantservices.com/classes/al/source/pdf/ASCII-Conversion-Chart.pdf
• Examples and sample code found here: https://josephus.sergeantservices.com/classes/al/source/. NOTE: The same examples can be cloned from this repository: https://tsergeant@bitbucket.org/tsergeant/al_examples.git
• All files provided by the instructor in the al_homework repository.
• Video instructions provided in Canvas as part of this course. You MAY NOT USE any other video resources.
• The course notes that accompany the video instructions which can be found here: https://docs.google.com/presentation/d/1LLOiiKOPDwjEiQ4QDcC9pO59gUcud04ireg_4jbLs3w/edit#slide=id.p
• The resources listed here: https://josephus.sergeantservices.com/classes/al/onlinesources.php which include the Intel Developer's Manual (https://josephus.sergeantservices.com/classes/al/source/pdf/intel_assembly_manual.pdf)
• Any handouts provided by the instructor as part of this course.
• Your own course notes
• Your instructor
• Discussions about the assignment with other students as long as you never look at the code produced by another student and you never receive instructions about solving the homework. That is, discussions need to be about concepts and understanding the technologies and not about how to solve the particular problem posed in this assignment.

You may NOT use/access:

• Resources not expressly listed above, including, but not limited to, the following ...
• Source code not provided as part of this assignment. (Obviously, this includes, but is not limited to, source code written by other students whether current or in the past).
• Code-generating tools (of which ChatGPT is one of many examples).
• Any web sites not directly linked to from the homework assignment.

Failure to abide by these guidelines will result in a zero for the assignment and the incident will be reported to the university provost as a violation of the university academic integrity policy. A second incident of academic dishonesty (whether from this course or another computer science course) will result in an F in the course.

Overview

Begin by pulling the most recent version of the homework repository and do your work in the hw05 directory. The required input files are found in the data directory of the repository. Also recall that you can find sample code that uses the I/O macros to read from a data file (in the demos directory of the repository).

First Program: array_int.asm

You may assume that the file contains no more than 10,000 numbers and that the numbers are signed and will fit in a range appropriate for 32-bit signed values. The input file will have exactly one integer value per line. The numbers may be positive or negative (and the average can therefore be negative ... take a look at the commands cdq, cwd, cbw).

NOTE: I am fully aware that the program can be written more efficiently without storing the values into the array. However, the point of the assignment is for you to practice using arrays in a simple environment.

Second Program: array_str.asm

The fget_str IO macro returns the length of the read string in EAX. You can either store the lengths in a parallel array as you read in the names or you can recalculate the string lengths in the following loop. To determine the length of the string move one character at a time through the string counting as you go, stopping when to reach the zero byte.

You may assume that the file contains no more than 10,000 names and that no name will be longer than 26 characters. The input file will have exactly one name per line. There is no need to try to separate first and last name in this assignment.

Submission Guidelines