Method for reexecuting instruction by altering high bits of inst

Details Method for reexecuting instruction by altering high bits of inst Method for reexecuting instruction by altering high bits of inst

1989-09-06

1992-09-15

Lee, Thomas C.

Boots, shoes, and leggings

395800, 3642624, 3642629, 3642623, 3642665, 3649462, 364770, 364DIG1, G06F 900, G06F 932

Patent

active

051485303

ABSTRACT:
In a data processing system using a virtual memory adressing scheme, certain software instructions call for the virtual address to be stored in a base register. The virtual address stored in the base register is incremented or decremented during the read out cycle of the previous operand to address the next operand. If the operand is not in physical memory, then the contents of the base register is restored to its original value.

REFERENCES:
patent: 4041474 (1977-08-01), Le Can
patent: 4224676 (1980-09-01), Appelt
patent: 4524415 (1985-06-01), Mills, Jr. et al.
patent: 4670835 (1987-05-01), Kelly et al.
patent: 4707799 (1987-11-01), Ishikawa et al.
patent: 4805095 (1989-02-01), Armstrong et al.

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