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Line 14: It consisted initially as a single instruction a "Branch to Register" 14. The mnemonic used in the [[IBM]] [[Assembly language#Assembler\|Assembler]] was BR and hence the name: IEF '''BR 14'''. It didn't set the return code and hence a second instruction had to be ~~add~~added to clear the return code so that it would exit with the correct status. The machine code for the modified program is:

IEFBR14: Difference between revisions