JPH03113439U - - Google Patents

Info

Publication number
JPH03113439U
JPH03113439U JP2198690U JP2198690U JPH03113439U JP H03113439 U JPH03113439 U JP H03113439U JP 2198690 U JP2198690 U JP 2198690U JP 2198690 U JP2198690 U JP 2198690U JP H03113439 U JPH03113439 U JP H03113439U
Authority
JP
Japan
Prior art keywords
microcomputer
internal data
readout circuit
bus
circuit
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
JP2198690U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP2198690U priority Critical patent/JPH03113439U/ja
Publication of JPH03113439U publication Critical patent/JPH03113439U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本考案の一実施例を内蔵するコンピユ
ータ・システムの電気回路ブロツク図、第2図は
暴走監視回路のデコード機能説明図、をそれぞれ
示している。 10……CPU、20……ROM、30……R
AM、40a,40b〜40n……入出力外部機
器、50……入出力インターフエイス、60a…
…アドレスバス、60b……データバス、60c
……コントロールバス、70……暴走監視回路。
FIG. 1 shows an electric circuit block diagram of a computer system incorporating an embodiment of the present invention, and FIG. 2 shows an explanatory diagram of a decoding function of a runaway monitoring circuit. 10...CPU, 20...ROM, 30...R
AM, 40a, 40b to 40n...Input/output external device, 50...Input/output interface, 60a...
...Address bus, 60b...Data bus, 60c
...Control bus, 70...Runaway monitoring circuit.

Claims (1)

【実用新案登録請求の範囲】 マイクロコンピユータにおいて不的確なコマン
ドが実行されることにより、該マイクロコンピユ
ータが所定の手順から遊離した無作為の動作モー
ドとなる暴走状態に陥つたことを検出するマイク
ロコンピユータの暴走検出回路において、 前記マイクロコンピユータのアドレスバス、デ
ータバス及びコントロールバスに存在する内部デ
ータを読み出す内部データ読み出し回路と、 該内部データ読み出し回路の読み出した内部デ
ータと前記マイクロコンピユータの実行すべき所
定の手順に基づき決定された基準データとを比較
し、前記内部データの異常を判断する異常判断回
路と、 を備えたことを特徴とするマイクロコンピユータ
の暴走検出回路。
[Claims for Utility Model Registration] A microcomputer that detects when an incorrect command is executed in a microcomputer, causing the microcomputer to run away from a predetermined procedure and enter a random operating mode. The runaway detection circuit includes: an internal data readout circuit that reads internal data present in an address bus, a data bus, and a control bus of the microcomputer; and an internal data readout circuit that reads internal data that is read by the internal data readout circuit and a predetermined command to be executed by the microcomputer. A runaway detection circuit for a microcomputer, comprising: an abnormality determination circuit that compares the internal data with reference data determined based on the procedure and determines whether the internal data is abnormal.
JP2198690U 1990-03-05 1990-03-05 Pending JPH03113439U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2198690U JPH03113439U (en) 1990-03-05 1990-03-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2198690U JPH03113439U (en) 1990-03-05 1990-03-05

Publications (1)

Publication Number Publication Date
JPH03113439U true JPH03113439U (en) 1991-11-20

Family

ID=31525014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2198690U Pending JPH03113439U (en) 1990-03-05 1990-03-05

Country Status (1)

Country Link
JP (1) JPH03113439U (en)

Similar Documents

Publication Publication Date Title
JPH03113439U (en)
JPH0520135U (en) Anomaly detection device for micro computer system
JPH029936U (en)
JPS63110944U (en)
JPH0273226U (en)
JPS596202U (en) Sequence control device
JPH0277748U (en)
JPS58194923U (en) Vehicle stopping device in case of driver abnormality
JPS62125957U (en)
JPS60104995U (en) alarm system
JPS62192487U (en)
JPH048104U (en)
JPH0475449U (en)
JPH0452247U (en)
JPS62178207U (en)
JPS6427738U (en)
JPS61204261U (en)
JPS586936U (en) Engine generator parallel operation device
JPS6392963U (en)
JPH0246455U (en)
JPS5836450U (en) microprocessor analyzer
JPS6062104U (en) Automotive control device
JPS6341963U (en)
JPS618353U (en) Microcomputer with DMA data transmission line
JPS63104841U (en)