Labels:book | bulletin board | poster | reckoner | sky | windowpane OCR: IV-10 Mops Assembler Condition Codes There are five condition codes used by the Mops Assembler and most instructions affect at least one of them. Bits through 4 are the condition codes and they are the only bits on the user byte that are used See chapter for which instructions affect which condition codes They are used for various tests for conditional branching and setting bytes The codes Code Name BitI Location Description eXtend Used for multiprecision computations Iffetted then usually set as the code c set Negative On if most significant bit of result is on cttwise off Zero On if result is zero, otherwise off. oVerflow On if. there is an arithmetic overflow otherwise off If on the result is probably wrong Carry On if carry generated by the most sigraifant digit in an addition, or a bo ...
