JPS55166748A - Detection system for computer program runaway - Google Patents

Detection system for computer program runaway

Info

Publication number
JPS55166748A
JPS55166748A JP7353879A JP7353879A JPS55166748A JP S55166748 A JPS55166748 A JP S55166748A JP 7353879 A JP7353879 A JP 7353879A JP 7353879 A JP7353879 A JP 7353879A JP S55166748 A JPS55166748 A JP S55166748A
Authority
JP
Japan
Prior art keywords
parity
program
memory
program data
program runaway
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
JP7353879A
Other languages
Japanese (ja)
Inventor
Yoshiaki Takahashi
Takao Nouchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7353879A priority Critical patent/JPS55166748A/en
Publication of JPS55166748A publication Critical patent/JPS55166748A/en
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To make a check on a program runaway by previously setting abnormal parity at an unused area in a memory and by deciding the program runaway when the abnormal parity is found by checking.
CONSTITUTION: Every time program data (f) are read out of memory 80, parity (g) in memory 81 corresponding to the program data is read out and then checked by checking circuit 9. When the result of the check shows dissidence, the program data are considered to be incorrect ones and when coincidence, they are processed as they are by processor 1 being regarded as normal ones. If a jump instruction set as the final instruction is not generated when the program processing advances until the final instruction, access to an unoccupied area is attained and abnormal parity read by the access to the unoccupied area is detected by the checking circuit.
COPYRIGHT: (C)1980,JPO&Japio
JP7353879A 1979-06-13 1979-06-13 Detection system for computer program runaway Pending JPS55166748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7353879A JPS55166748A (en) 1979-06-13 1979-06-13 Detection system for computer program runaway

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7353879A JPS55166748A (en) 1979-06-13 1979-06-13 Detection system for computer program runaway

Publications (1)

Publication Number Publication Date
JPS55166748A true JPS55166748A (en) 1980-12-26

Family

ID=13521101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7353879A Pending JPS55166748A (en) 1979-06-13 1979-06-13 Detection system for computer program runaway

Country Status (1)

Country Link
JP (1) JPS55166748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03108035A (en) * 1989-09-21 1991-05-08 Mitsubishi Heavy Ind Ltd Program self-diagnostic system using memory check

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03108035A (en) * 1989-09-21 1991-05-08 Mitsubishi Heavy Ind Ltd Program self-diagnostic system using memory check

Similar Documents

Publication Publication Date Title
GB1344474A (en) Fault detection and handling arrangements for use in data proces sing systems
JPS55166748A (en) Detection system for computer program runaway
JPS576947A (en) Test processing system of on-line process system
JPS5619593A (en) Parity check processing system for memory
JPS5259537A (en) Data processor
JPS55150046A (en) Retrying system for data processor
JPS5348637A (en) Error detection method for program
JPS5617436A (en) Loading system for nonresident program
JPS55146556A (en) Data collating system
JPS55140953A (en) Abnormal operation detecting system for computer system
JPS52149046A (en) Data automatic recovery system at computer abnormality time
JPS5764399A (en) Data processing device
JPS5642865A (en) Program runaway detecting circuit of microcomputer
JPS5475242A (en) Interrupt processing system
JPS5621250A (en) Instruction retrial system
JPS5730200A (en) Information processing system
JPS54146550A (en) Running control type information processor
JPS5613600A (en) Check system for memory contents
JPS5523571A (en) Error processing system of data processing unit
JPS5552598A (en) Data processor
JPS54129948A (en) Data processor
JPS5478936A (en) Check system of input and output terminal abnormal state in on-line information processing system
JPS55123721A (en) Direct memory access unit
JPS5652451A (en) Interruption display system
CORLUHAN et al. On an algorithm for identifying faults in a T-diagnosable system[Interim Report]