This document provides a lecture summary on macro programming in assembly language. It discusses that macros allow code that is frequently used or required in a sequence to be written once and invoked when needed. The macro syntax involves naming the macro, its arguments between parentheses, the macro body, and ending with ENDM. Macros can include comments and local labels to avoid errors, and external macros can be included from other files using the INCLUDE directive.

1. COMPUTER ORGANIZATION
& ASSEMBLY LANGUAGE
LECTURE ON MACRO PROGRAMING WEEK 13 PRACTICAL
BY MUHAMMAD JAFER
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2. MACRO PROGRAMMING
• Some Code required Again & Again
• Some required in a sequence
• Rewriting A Issue
• Writing a Task or group of Task for a Job once
• Invoke it When Required
• This process is called Macro
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3. MACRO SYNTAX
• Name MACRO Arg1, Arg2,….
• BODY
• ENDM
• Calling A MACRO
• Name Arg1,…..
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4. MACRO COMMENTS
• ; - Assembler Identifiable
• ;; - Non-Assembler Identifiable
• Three Important Command
• .LALL (List ALL)
• .SALL (Suppress ALL)
• .XALL (eXecutable ALL)
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5. LOCAL DIRECTIVES
• Needed for Labels In Macro
• Define after Macro first list
• If not used Errors by assembly due to duplication
• Local name1,name 2, ….
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6. INCLUDE DIRECTIVES
• INCLUDING A MACRO from external directory
• MYMACRO.MAC
• INCLUDE MYMACRO.MAC
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7. CHAPTER REVIEW
• The x86 PC Assembly Language, Design &
Interfacing
• Chapter # 4
• What is a Macro & How is it used?
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