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IBM System/7 Functional Characteristics - All about the IBM 1130 ...

IBM System/7 Functional Characteristics - All about the IBM 1130 ...

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REGISTER-TO-REGISTER INSTRUCTIONSStore to Register (PSTR)0 5 8 15Op code1 1 1 1 1III! X 11X XModifier0000101101111111•■■•••.,r■•,••■••+.v..w.,F 8-F 0 6The accumulator contents replace <strong>the</strong> contents of <strong>the</strong> register specified by <strong>the</strong> R field.The contents of <strong>the</strong> accumulator are not changed.If R=000, <strong>the</strong> accumulator contents replace those in <strong>the</strong> IAR, thus providing a branchto <strong>the</strong> address specified by <strong>the</strong> accumulator contents.The PSTR instruction does not change <strong>the</strong> carry and overflow indicators. The resultindicators are changed to reflect <strong>the</strong> final contents of <strong>the</strong> register specified by R.Example:0 5 8 15PSTR instructionOp code1 1 1 1 111111 1 1Modifier0 0 0 0 1 0 1 1 0IIIiiiiFF0 6OBefore PSTR operationAccumulator0 15Index register07150 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1iii1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0O 0 0A AA AOAfter PSTR operationAccumulator0 15Index register 70150 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1I I I I I I II I I I I I I I IO 0 00 0 0 0 0 0 0I I I I I I0 0 00 0 0 0 0 1 1 1 1I I I I I I I I IProcessor Instructions 4-41

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