Microprocessor emulation apparatus for debugging a microprocesso

Details Microprocessor emulation apparatus for debugging a microprocesso Microprocessor emulation apparatus for debugging a microprocesso

1987-09-08

1988-12-06

Eng, David Y.

Boots, shoes, and leggings

371 16, G06F 1100

Patent

active

047899247

ABSTRACT:
A microprocessor emulation apparatus for debugging a microprocessor of an electronic system without utilizing an interrupt signal and a stop signal to temporarily stop an operation of the system. The apparatus makes the system execute a program in the apparatus for reading and modifying contents stored in the system without using of control signals from the system by exchanging buses of the system to bus means of the apparatus to produce a pseudo stopping state, whereby the pseudo stopping state does not make the system execute a stored program of the system and which provides an analysis state which causes the system to execute the program in the apparatus.

REFERENCES:
patent: 3925766 (1975-12-01), Bardotti et al.
patent: 3937938 (1976-02-01), Matthews
patent: 3967104 (1976-06-01), Brantingham
patent: 4003033 (1977-01-01), O'Keefe et al.
patent: 4034194 (1977-07-01), Thomas et al.
patent: 4179737 (1979-12-01), Kim

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