12.07.2015 Views

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

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

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

SHOW MORE
SHOW LESS
  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Load and Zero (PLZ)0 5 8 15Op code1 1 0 0 1tillRX X XI IDisplacementC 8-F X XThe contents of <strong>the</strong> storage location specified by <strong>the</strong> effective address replace <strong>the</strong>contents of <strong>the</strong> accumulator. The storage location contents are set to 0.An R field of 000 means that <strong>the</strong> effective address is formed using <strong>the</strong> IAR as a baseregister; a nonzero R field (R=001 to 111) indicates that an index register is used togenerate <strong>the</strong> EA.The carry and overflow indicators are not changed. The result indicators are changedto reflect <strong>the</strong> final contents of <strong>the</strong> accumulator.Example:Before PLZ operationO Addressed storage word0Accumulator15 0 150 0 0 0 11 1 1 1 0 0 0 0 1 1 1 11111111111111110 F 0XXXXXXXXXXXXXXXX1 1 I I 1 I 1 I I I I I I I I°After PLZ operationAddressed storage wordAccumulator0 15 0 150 0 0 0 0 0 0 0 10 0 0 0 10 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 1 1 1 1 1111111111111 1 1 1 1 I 1 I 1 1 1 1 1 1 10 0 0 0 0 F 0Processor Instructions 4-9

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!