360 Assembly/360 Instructions/LPSW

LPSW - ? - Opcode 82 - Privileged Instruction

Example usage Edit


Availability Edit

The LPSW instruction is available on all models. It is a privileged instruction.

Purpose of Instruction Edit

This instruction allows a privileged program to load the entire contents of the PSW from a location. The typical usage would be for an Operating System to set up the next task to run, or to return control to a problem program after completing processing of a Supervisor Call

Typical Usage Edit

Operation Edit

This is a privileged instruction, and is available on the 360 only. LPSWE is used on 370 and z/System.

Exceptions and Faults Edit

  • Privileged Operation
  • Invalid Opcode (370 and z/System)
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