Apparatus for using an ALU as a temporary storage for data durin

Details Apparatus for using an ALU as a temporary storage for data durin Apparatus for using an ALU as a temporary storage for data durin

1989-09-08

1992-06-23

Lee, Thomas C.

Boots, shoes, and leggings

395250, 364DIG2, 3649235, 3649483, 3649397, G06F 100

Patent

active

051250942

ABSTRACT:
A data-processing device has a clock generator for generating pulse signals .phi.1 and .phi.2, an ALU capable of executing various arithmetic-logic operations during cycles corresponding to the pulse signals .phi.1 and .phi.2,and a control unit for generating a control signal which causes the ALU to execute an arithmetic-logic operation according to an instruction. This data-processing device further includes a transfer switch for causing the ALU to execute an arithmetic-logic operation, which is for generating output data equal to input data, during a cycle in which the ALU would otherwise be idle.

REFERENCES:
patent: 3818202 (1974-06-01), Ellison
patent: 4155118 (1979-05-01), Lamiaux
patent: 4377846 (1983-03-01), Yoshida
Hayes, "A Survey of Bit-Sliced Computer Design," Journal of Digital Systems, vol. V, No. 3, pp. 203-250, Fall 1981.
Fenner et al., "MASCO: The Design of a Microprogrammed Processor," Computer, vol. 18, No. 3, pp. 41-53, IEEE Mar. 1985.
Lass, "A Fourth-Generation Computer Organization," Proceedings of the Spring Joint Computer Conference (A.F.I.P.S. Conf. Proceedings), vol. 32, pp. 435-440, Apr. 30-May 2, 1968.
Karstad, "Microprogramming and Bit-Slice Architecture," Computer Design, vol. 23, No. 3, pp. 213-223, Mar. 1984.
Sun Microsystems, "Windows and Window Based Tools: Beginner's Guide," pp. 39-44, Part No: 800-1287-03, Revision A, Feb. 17, 1986.

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