Description
Purpose: Become familiar with data conversion, addressing modes, and assembly language macro’s. Points: 100 Background: The tridecimal1 system (also known as triskadecimal or base-13) is a positional notation numeral system using thirteen as its base. It uses 13 different digits for representing numbers. The digits for base 13 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, and C. The number thirteen (that is, the number written as “13” in the base ten numerical system) is instead written as “10” in tridecimal (meaning “1 thirteen and 0 units”, instead of “1 ten and 0 units”), whereas the digit string “15” means “1 thirteen and 5 units” (i.e. the same number that in decimal is written as “18”). The symbol A13 is used for 1010, B13 is used for 1110, and C12 is used for 1210. For example. base-10 1 2 3 4 5 6 7 8 9 10 11 12 base-13 1 2 3 4 5 6 7 8 9 A B C Assignment Write an assembly language program to convert tridecimal/ASCII string to integers and integers to tridecimal/ASCII strings. Using the provided main, the program has two key steps are follows: 1. Write the code to convert a string of ASCII digits representing an trideciaml value into an integer (double-word sized). This code should be placed in the provided main at the marked location (step #1) and will convert the string dStr1 (trideciaml representation) into an integer stored in the variable iNum1. 2. Convert the code from step #1 into a macro, tri2int, which is called multiple times in the next part of the provided main. You may assume valid/correct data. As such, no error checking is required. You may add additional variables as needed. 1 For more information, refer to: https://en.wikipedia.org/wiki/Tredecimal Submission: • All source files must assemble and execute on Ubuntu with yasm. • Submit source files ◦ Submit a copy of the program source file via the on-line submission • Once you submit, the system will score the project and provide feedback. ◦ If you do not get full score, you can (and should) correct and resubmit. ◦ You can re-submit an unlimited number of times before the due date/time. • Late submissions will be accepted for a period of 24 hours after the due date/time for any given lab. Late submissions will be subject to a ~2% reduction in points per an hour late. If you submit 1 minute – 1 hour late -2%, 1-2 hours late -4%, … , 23-24 hours late -50%. This means after 24 hours late submissions will receive an automatic 0. Program Header Block All source files must include your name, section number, assignment, NSHE number, and program description. The required format is as follows: ; Name: ; NSHE ID: ; Section:
