JPS56103746A - Information processor - Google Patents

Information processor

Info

Publication number
JPS56103746A
JPS56103746A JP556480A JP556480A JPS56103746A JP S56103746 A JPS56103746 A JP S56103746A JP 556480 A JP556480 A JP 556480A JP 556480 A JP556480 A JP 556480A JP S56103746 A JPS56103746 A JP S56103746A
Authority
JP
Japan
Prior art keywords
address
signal
stages
stack level
register
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
JP556480A
Other languages
Japanese (ja)
Other versions
JPS6239450B2 (en
Inventor
Kazuhide Kawada
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
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP556480A priority Critical patent/JPS56103746A/en
Publication of JPS56103746A publication Critical patent/JPS56103746A/en
Publication of JPS6239450B2 publication Critical patent/JPS6239450B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/36—Preventing errors by testing or debugging software

Abstract

PURPOSE:To detect program error of microcomputers different in stack level, by providing the means switching the number of steps of connection of address shut register connected in a plurality of stages and a control means indicating the number of stages of address shunt register connected to this means. CONSTITUTION:The address of a program memory 1 storing information is designated with an program counter 2, and the signal indicating the designated address is tentatively stored to a n-bit bidirectional shift register 10, when PUSH (write-in) signal 20 is output. Further, when a POP (readout) signal 21 is output, the content of the register 10 is temporarily shunted with a stack level switching signal from a terminal 22 via a gate 3 or 7 to n-bit bidirectional shift registers 11, 12. Further, AND gates 4, 6 and an OR gate 5 are controlled with the stack level switching signal from the terminal 22 to indicate the number of stages of stack registers, allowing to detect the program error different from the stack level.
JP556480A 1980-01-21 1980-01-21 Information processor Granted JPS56103746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP556480A JPS56103746A (en) 1980-01-21 1980-01-21 Information processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP556480A JPS56103746A (en) 1980-01-21 1980-01-21 Information processor

Publications (2)

Publication Number Publication Date
JPS56103746A true JPS56103746A (en) 1981-08-19
JPS6239450B2 JPS6239450B2 (en) 1987-08-24

Family

ID=11614695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP556480A Granted JPS56103746A (en) 1980-01-21 1980-01-21 Information processor

Country Status (1)

Country Link
JP (1) JPS56103746A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62247275A (en) * 1986-03-31 1987-10-28 Ando Electric Co Ltd Cpu identification circuit for in-circuit emulator
JPS63316134A (en) * 1987-06-18 1988-12-23 Toshiba Corp Semiconductor integrated circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138749A (en) * 1974-04-23 1975-11-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138749A (en) * 1974-04-23 1975-11-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62247275A (en) * 1986-03-31 1987-10-28 Ando Electric Co Ltd Cpu identification circuit for in-circuit emulator
JPS63316134A (en) * 1987-06-18 1988-12-23 Toshiba Corp Semiconductor integrated circuit

Also Published As

Publication number Publication date
JPS6239450B2 (en) 1987-08-24

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