Alignment of one operand of a two operand arithmetic unit

Details Alignment of one operand of a two operand arithmetic unit Alignment of one operand of a two operand arithmetic unit

1981-08-18

1984-06-26

Springborn, Harvey E.

Boots, shoes, and leggings

G06F 738, G06F 1300

Patent

active

044569556

ABSTRACT:
A data processing system has an arithmetic operating unit to process a plurality of bytes at a time and carries out an arithmetic operation on first and second operands each starting from any desired address on a main memory and having any desired number of byte length. The second operand is aligned to an operand position of the first operand and the aligned second operand is supplied to the operating unit while the first operand is supplied as it is to the operating unit. Since the second operand is aligned to the operand position of the first operand before it is processed in the operating unit, the number of times of alignment is reduced.

REFERENCES:
patent: 4135242 (1979-01-01), Ward
patent: 4189768 (1980-02-01), Liptay
patent: 4219874 (1980-08-01), Gusev
patent: 4268909 (1981-05-01), Kindell
patent: 4317170 (1982-02-01), Wada et al.
FP780 Floating-Point Accelerator Technical Description, Digital Equipment Corporation, 1978, pp. 2-37 to 2-41.

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