Serial in-circuit emulator

Details Serial in-circuit emulator Serial in-circuit emulator

1998-01-05

1999-11-30

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

G06F 700

Patent

active

059959932

ABSTRACT:
To debug software programs, an economical and efficient serial in-circuit emulator (ICE) according to the invention can pause the operation of a CPU to read/write current data from/to a register of the CPU or to modify the current data in a register of the CPU. Furthermore, this serial in-circuit emulator can also read/write current data from/to an external memory or other external devices, or modify these data. The CPU mentioned above has an instruction register and a debugging register which allows the serial in-circuit emulator to read/write required data. This serial in-circuit emulator, which comprises a serial in-circuit emulator control register, a serial in-circuit emulator address register and a serial data input/output terminal, can be easily integrated with the CPU without affecting the operating speed thereof as well as has all functions that conventional serial in-circuit emulators should provide.

REFERENCES:
patent: 4608660 (1986-08-01), Hasebe
patent: 4890253 (1989-12-01), Jabusch et al.
patent: 5748515 (1998-05-01), Glass et al.

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