cs 301 fall 2001 – chapter 3
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CS 301 Fall 2001 – Chapter 3. Slides by Prof. Hartman, following “IBM PC Assembly Language Programming” by Peter Abel. Using DEBUG. Tutorial on the web. Appendix C in the book. DEBUG is not case sensitive. All numbers are hexadecimal. Spaces are used to separate parameters. - PowerPoint PPT PresentationTRANSCRIPT
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CS 301 Fall 2001 – Chapter 3
Slides by Prof. Hartman, following “IBM PC Assembly Language Programming” by Peter Abel
04/19/23 2
Using DEBUG
Tutorial on the web. Appendix C in the book. DEBUG is not case sensitive. All numbers are hexadecimal. Spaces are used to separate parameters. Segments and offsets are specified as
segment::offset.
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DEBUG Commands
A Assemble instructions C Compare two areas of memory D Display contents of memory E Enter data into memory F Fill memory G Run the executable in memory. (Go) H Perform hexadecimal arithmetic I Input and display one byte from a port. L Load a file or disk sectors into memory. M Move (or copy) memory
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DEBUG Commands 2
N Name a program O Output a byte to a port P Proceed (execute CALL, LOOP, INT or REP) Q Quit R Display the contents of one or more registers S Search memory T Trace the execution of one instruction U Unassemble (disassemble) machine code. W Write a (named, .COM) file to disk ? Display help screen
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DEBUG Examples
Work through examples in the text: pages 36—48.