System
SINT — Set interval timer
EEXI — Enable external interrupts
DEXI — Disable external interrupts
SCNI — Scan in – initiate IO read, this changed on different architectures
SCNO — Scan out – initiate IO write, this changed on different architectures
STAG — Set tag (not allowed in user-level processes)
RTAG — Read tag
IRWL — Hardware pseudo operator
SPRR — Set processor register (highly implementation dependent, only used in lower levels of MCP)
RPRR — Read processor register (highly implementation dependent, only used in lower levels of MCP)
MPCW — Make PCW
HALT — Halt the processor (operator requested or some unrecoverable condition has occurred)
Read more about this topic: Burroughs Large Systems Instruction Sets
Famous quotes containing the word system:
“We now come to the grand law of the system in which we are placed, as it has been developed by the experience of our race, and that, in one word, is SACRIFICE!”
—Catherine E. Beecher (1800–1878)
“Some rough political choices lie ahead. Should affirmative action be retained? Should preference be given to people on the basis of income rather than race? Should the system be—and can it be—scrapped altogether?”
—David K. Shipler (b. 1942)
“My advice to people today is as follows: If you take the game of life seriously, if you take your nervous system seriously, if you take your sense organs seriously, if you take the energy process seriously, you must turn on, tune in, and drop out.”
—Timothy Leary (b. 1920)