05500947 is referenced by 11 patents and cites 20 patents.

A method of specifying the operands for a microcoded CPU employs a combination of a set of microinstruction routines for generic operand modes, along with hardware primitives for selecting various specific types of operand treatment. Decoding of a machine-level instruction produces an entry point for the microstore, selecting one of the set of generic operand modes. Also, decoding of the instruction produces control bits that are used directly to select the specific operand type or used by the hardware primitives. In this way, branching is avoided in the microinstruction sequences used for operand specifying, but yet the amount of microcode needed is a minimum.

Title
Operand specifier processing by grouping similar specifier types together and providing a general routine for each
Application Number
212348
Publication Number
5500947
Application Date
July 1, 1994
Publication Date
March 19, 1996
Inventor
John F Brown III
Northborough
MA, US
George M Uhler
Marlborough
MA, US
Agent
Joanne N Pappas
Denis G Maloney
Arthur W Fisher
Assignee
Digital Equipment Corporation
MA, US
IPC
G06F 9/24
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