UMBC CMSC 313, Computer Organization & Assembly Language, Fall 2012

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Tuesday, September 18, 2012

Assigned:         Due:   

i386 Assembly Language IV

Assigned Reading in Null & Lobur:   

Assigned Reading in Duntemann:  Ch 9

Actual Slides (in PDF): Slides06.pdf

Topics Covered:

• Reviewed SHORT vs NEAR jumps.
• Indexed Addressing mode.
• Skipped: i386 string instructions

Programs Shown:

• Indexed addressing mode use to add 5 to each element of an "array": index1.asm, index1.lst (listing) and sample run.
• Using indexed addressing mode to manipulate a two-dimensional array: index2.asm and sample run.
• Using jump tables to simulate a switch statement: switch.c, switch.asm and listing.