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Lecture08_handout-F09

Lecture08_handout-F09 - CE-320 Microcomputers I Fall B 2009...

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CE-320 Microcomputers I Fall B 2009 Lecture 8 Page 1 Lecture 8 Assembly Language Purpose: Describe the files and processes associated with converting assembly code to machine code. Use assembler directives to make our code more readable
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CE-320 Microcomputers I Fall B 2009 Lecture 8 Page 2 Assembly Process Source File ASCII text file Must have the .asm extension Assembler (Cross-Assembler) Translates assembly into object code Much like an electronic copy of the instruction set Source: Prog.asm Object: Prog.obj Bit Stream Prog.s19 Hardware: µP Listing: Prog.lst assembler linker loader
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CE-320 Microcomputers I Fall B 2009 Lecture 8 Page 3 Object Code Mix of machine code and additional information Allows several pieces of machine code to be combined into a single large program Listing File Human-readable log file Contains the original assembly and the machine code Extremely useful during debugging Linker
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