Multi-precision fixed/floating-point processor

Details Multi-precision fixed/floating-point processor Multi-precision fixed/floating-point processor

1985-08-30

1988-05-31

Harkcom, Gary V.

Boots, shoes, and leggings

364748, G06F 748

Patent

active

047485809

ABSTRACT:
A single-chip fixed/floating-point arithmetic processor, a three port ALU, a plurality of storage registers R, S, F0 and F1, a constant store circuit and an output data register F. Two of the storage registers R and S are provided for storing 64-bit input operands and two of the regusters F0 and F1 are provided for storing 64-bit results of operations performed in the ALU. Each of the registers are provided with three output ports and corresponding pass gates for selectively transferring data from the registers to the three inputs of the ALU under the control of control signals applied to the pass gates. The constant store is also coupled to one of the input ports of the ALU by a pass gate for transferring constants to the ALU under the control of a pass gate. Results of the ALU are provided to the data output register F for further processing off-chip.

REFERENCES:
patent: 4215416 (1980-07-01), Muramatsu
patent: 4217657 (1980-08-01), Handly et al.
patent: 4467444 (1984-08-01), Harmon, Jr. et al.
patent: 4525776 (1985-06-01), Eldumiati et al.

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