JPS6457345A - Address tracing circuit - Google Patents

Address tracing circuit

Info

Publication number
JPS6457345A
JPS6457345A JP62212848A JP21284887A JPS6457345A JP S6457345 A JPS6457345 A JP S6457345A JP 62212848 A JP62212848 A JP 62212848A JP 21284887 A JP21284887 A JP 21284887A JP S6457345 A JPS6457345 A JP S6457345A
Authority
JP
Japan
Prior art keywords
signal
address tracing
state
processor
instruction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62212848A
Other languages
Japanese (ja)
Inventor
Shigeo Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62212848A priority Critical patent/JPS6457345A/en
Publication of JPS6457345A publication Critical patent/JPS6457345A/en
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To more appropriately grasp the execution state of farmware at the time of generating a fault by selecting a specific hardware signal and controlling the ON/OFF of address tracing in accordance with the state of the selected signal. CONSTITUTION:A trace control part 11 selects a signal for turning on address tracing out of hardware signals S1-S4 based on an instruction obtained from a processor 12 through a control bus 13, and when the selected hardware signal goes to the state specified by the processor 12, an instruction for starting operation is outputted to an address tracing part 14 through a control line 15. Then, signal for turning off the address tracing is similarly selected and the selected hardware signal is goes to a state instructed by the processor 12, an instruction for ending operation is outputted to the address tracing part 14.
JP62212848A 1987-08-28 1987-08-28 Address tracing circuit Pending JPS6457345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62212848A JPS6457345A (en) 1987-08-28 1987-08-28 Address tracing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62212848A JPS6457345A (en) 1987-08-28 1987-08-28 Address tracing circuit

Publications (1)

Publication Number Publication Date
JPS6457345A true JPS6457345A (en) 1989-03-03

Family

ID=16629329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62212848A Pending JPS6457345A (en) 1987-08-28 1987-08-28 Address tracing circuit

Country Status (1)

Country Link
JP (1) JPS6457345A (en)

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