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JPS6428574A - Pass trace control system - Google Patents

Pass trace control system

Info

Publication number
JPS6428574A
JPS6428574A JP62184551A JP18455187A JPS6428574A JP S6428574 A JPS6428574 A JP S6428574A JP 62184551 A JP62184551 A JP 62184551A JP 18455187 A JP18455187 A JP 18455187A JP S6428574 A JPS6428574 A JP S6428574A
Authority
JP
Japan
Prior art keywords
data
tracing
backward
units
tracings
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.)
Granted
Application number
JP62184551A
Other languages
Japanese (ja)
Other versions
JPH073462B2 (en
Inventor
Tomoki Kanemochi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62184551A priority Critical patent/JPH073462B2/en
Publication of JPS6428574A publication Critical patent/JPS6428574A/en
Publication of JPH073462B2 publication Critical patent/JPH073462B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Design And Manufacture Of Integrated Circuits (AREA)
  • Tests Of Electronic Circuits (AREA)

Abstract

PURPOSE:To shorten processing time with a reduction in the frequency of inputting and outputting circuit data, by a method wherein a large logical circuit containing a number of logical gates and FFs is divided into subunits and forward and backward tracings of data are performed from a tracing start point per unit and the data per subunit is readout with respect to an external memory to be saved. CONSTITUTION:A printed circuit board 10 based on a large logical circuit is separated into subunits 10a, 10b... which carry LSIs 12a, 12b... having LSI internal circuits C1, C2... connected with a bus. The division of the units 10a, 10b... is further done by unit division 14. A forward tracing and a backward tracing of data are performed by a means 16 from a starting point for each of the units 10a, 10b... divided. The data for each of the units 10a, 10b... is read or saved with respect to an external memory by means 18a and 18b and the reading or saving of data and forward and backward tracings thereof are performed by a means 20 until a tracing start point disappears.
JP62184551A 1987-07-23 1987-07-23 Path trace control method Expired - Lifetime JPH073462B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62184551A JPH073462B2 (en) 1987-07-23 1987-07-23 Path trace control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62184551A JPH073462B2 (en) 1987-07-23 1987-07-23 Path trace control method

Publications (2)

Publication Number Publication Date
JPS6428574A true JPS6428574A (en) 1989-01-31
JPH073462B2 JPH073462B2 (en) 1995-01-18

Family

ID=16155180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62184551A Expired - Lifetime JPH073462B2 (en) 1987-07-23 1987-07-23 Path trace control method

Country Status (1)

Country Link
JP (1) JPH073462B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0391870A (en) * 1989-09-04 1991-04-17 Fujitsu Ltd How to modify path trace files

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647509A (en) * 1979-09-22 1981-04-30 Nippon Steel Corp Filter for removing interposing nonmetal from molten steel
JPS60181874A (en) * 1984-02-28 1985-09-17 Fujitsu Ltd Pass trace graphic processing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647509A (en) * 1979-09-22 1981-04-30 Nippon Steel Corp Filter for removing interposing nonmetal from molten steel
JPS60181874A (en) * 1984-02-28 1985-09-17 Fujitsu Ltd Pass trace graphic processing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0391870A (en) * 1989-09-04 1991-04-17 Fujitsu Ltd How to modify path trace files

Also Published As

Publication number Publication date
JPH073462B2 (en) 1995-01-18

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