Tracing system

Details Tracing system Tracing system

1982-11-17

1986-02-18

Thomas, James D.

Boots, shoes, and leggings

371 19, G06F 1100

Patent

active

045716773

ABSTRACT:
A tracing system for confirming an instruction which is executed by a central processing unit in accordance with an address of each instruction is provided with an AND gate for controlling such signal indicating coincidence between the address and trace address by utilizing a valid signal indicating that the contents of a memory address register of the central processing unit are true addresses of the instruction to be executed in the next stage.

REFERENCES:
patent: 3415981 (1968-12-01), Smith et al.
patent: 3518413 (1970-06-01), Holtey
patent: 3659273 (1972-04-01), Knauft et al.
patent: 3763474 (1973-10-01), Freeman et al.
patent: 3813531 (1974-05-01), King et al.
patent: 4315313 (1982-02-01), Armstrong et al.
patent: 4453093 (1984-06-01), Boudreau
IBM Tech. Discl. Bull., vol. 20, No. 4, Sep. 1977; "Program Debug Tool for Microprocessors", by E. Kellerman and L. J. Cesa, p. 1358.
Electrical Communication, vol. 54, No. 2, 1979, "Effective Software Debugging Using a Program Tracer", by J. M. Antoine et al., pp. 111-114.
IBM Tech. Discl. Bull., vol. 17, No. 11, Apr. 1975, "Processor Checking", by M. L. Carnes et al., pp. 3188-3189.
IBM Tech. Discl. Bull., vol. 16, No. 7, Dec. 1973, "Chocking of M-Program Instruction Sequencing", by D. C. Bossen et al., p. 2253.

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