Method and apparatus for inserting control digits into packed da

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36478601, 364749, G06F 750

Patent

active

059598743

ABSTRACT:
A processor having a circuit for performing a packed addition and/or packed subtraction operation. The decoder accesses the registers addressed by SRC1 and SRC2. These registers provide a first packed data and a second packed data to the circuit. Packed data consists of a number of fixed length data elements. The data elements can be eight bits, sixteen bits or thirty-two bits in length. The circuit performs the operation on the first data element from the first packed data and the first data element from second packed data, producing a first result data element. The circuit performs this operation on the next data element from the first packed data and the next data element from the second packed data, producing a next result data element. This continues for all the data elements in the first and second packed data. The result data elements constitute a result packed data that is stored in the destination register.

REFERENCES:
patent: 4707800 (1987-11-01), Montrone et al.
patent: 4768160 (1988-08-01), Yokoyama
patent: 4914617 (1990-04-01), Putrino et al.
patent: 5047975 (1991-09-01), Patti et al.
patent: 5327369 (1994-07-01), Ashkenazi

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