Systems Software COP 3402
University of Central Florida
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This 1 page Class Notes was uploaded by Luisa Beer on Thursday October 22, 2015. The Class Notes belongs to COP 3402 at University of Central Florida taught by Staff in Fall. Since its upload, it has received 32 views. For similar materials see /class/227466/cop-3402-university-of-central-florida in Computer Programming at University of Central Florida.
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Date Created: 10/22/15
Pass 2 algorithm for RISC assembler begin initialize opcode table open intermediate file and symbol table file load symbol table from file and close symbol table file open output object file and output listing file write object file header read input line from intermediate file do if line i quotEXTERNquot ampamp line i quotCODEquot ampamp line i quotENDU echo line to listing file read input line from intermediate file elseif line quotEXTERNquot echo EXTERN line to listing file read input line from intermediate file while line i quotDATAquot ampamp line i quotCODEquot ampamp echo line to listing file add subroutine name library name to external reference list read input line from intermediate file endwhile elseif line quotCODEU echo CODE line to listing file read input line from intermediate file while line i quotDATAquot ampamp line i quotEXTERNquot ampamp line quotENDquot calculate object code for instruction echo line to listing file adding object code write object code to object file read input line from intermediate file endwhile endif while line it quotENDU line if n ENDquot echo END line to listing file close intermediate file close output listing file write beginning of object file trailer While not at end of external reference list write external reference information to object file trailer endwhile close output object file end
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