Information processing system comprising a register renewal wait

Details Information processing system comprising a register renewal wait Information processing system comprising a register renewal wait

1986-06-16

1988-10-11

Williams, Jr., Archie E.

Boots, shoes, and leggings

364736, G06F 900, G06F 932, G06F 936, G06F 938

Patent

active

047775920

ABSTRACT:
When one of general registers has a register number indicated by a renewal instruction and should be renewed to a result of execution by an arithmetic unit of an execution time measured in terms of machine cycles for the renewal instruction, a register (91) holds the register number as a held number. From a machine cycle number representative of the execution time, a counter (95) is counted down in each machine cycle to successively provide decreasing numbers. Coincidence circuits (97, 98) find coincidence between the held number and two register numbers indicated by a current instruction which is preceded by the renewal instruction and for which two operands should be read from the general registers of the two register numbers. When the coincidence is found, execution of the current instruction is suspended. Otherwise, the operands are read. The suspension is released when the counter is counted down to zero.

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patent: 4617625 (1986-10-01), Nagashima et al.
patent: 4626989 (1986-12-01), Torii
patent: 4636942 (1987-01-01), Chen et al.
patent: 4661900 (1987-04-01), Chen et al.
patent: 4677544 (1987-06-01), Kinoshita
patent: 4683547 (1987-07-01), DeGroot

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