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:
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—Václav Havel (b. 1936)
“The United States is unusual among the industrial democracies in the rigidity of the system of ideological control—”indoctrination” we might say—exercised through the mass media.”
—Noam Chomsky (b. 1928)
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—Christine H. B. Grant, U.S. university athletic director. As quoted in the Chronicle of Higher Education, p. A42 (May 12, 1993)