Diagnostic procedures in an integrated circuit device

Details Diagnostic procedures in an integrated circuit device Diagnostic procedures in an integrated circuit device

1997-12-19

2000-10-17

Pan, Daniel H.

Electrical computers and digital processing systems: processing

Processing control

Specialized instruction processing in support of testing,...

712216, 712228, 712229, 712231, 714 30, 714 35, G06F 1500

Patent

active

061346527

ABSTRACT:
An on-chip breakpoint unit of an integrated circuit device is connected to receive the contents of an instruction pointer register via an address communication path. The breakpoint unit has a breakpoint register configured to hold a breakpoint address at which the normal operation of the CPU is to be interrupted for diagnostic purposes, and a comparator circuit operative to compare the breakpoint address with the contents of the instruction pointer register and to issue a breakpoint signal on a breakpoint signal path when there is a match. The on-chip breakpoint unit also has circuitry configured to inhibit generation of the breakpoint signal for a next instruction to be executed upon resumption of normal operation of the CPU after it has been interrupted.

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