JPS55121559A - Microprocessor analyzer - Google Patents

Microprocessor analyzer

Info

Publication number
JPS55121559A
JPS55121559A JP2891179A JP2891179A JPS55121559A JP S55121559 A JPS55121559 A JP S55121559A JP 2891179 A JP2891179 A JP 2891179A JP 2891179 A JP2891179 A JP 2891179A JP S55121559 A JPS55121559 A JP S55121559A
Authority
JP
Japan
Prior art keywords
memory
programs
circuit
substitution
desired programs
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
JP2891179A
Other languages
Japanese (ja)
Inventor
Masao Horigome
Kiyoshi Fukaya
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.)
Ando Electric Co Ltd
Original Assignee
Ando 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 Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Priority to JP2891179A priority Critical patent/JPS55121559A/en
Publication of JPS55121559A publication Critical patent/JPS55121559A/en
Pending legal-status Critical Current

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  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE: To make possible a test with memory 8 packaged in a unit, by making it possible to replace in the memory the range of random addresses that the memory occupies under address converting and switching control, when the total of substitution-desired programs does not exceed the capacity of memory 8.
CONSTITUTION: Memory 8 is provided with the capacity equivalent to the total of at least substitution-desired programs in memory 4. Address converting circuit 9 discriminates substitution-desired programs from other programs in memory 4 and makes substitution-desire addresses in memory 4 correspond to those in memory 8. Switching circuit 7 switches data bus 21 connected to microprocessor 1 to the memory 4 side or memory 8 side. Switching control circuit 10 controls circuit 7 by commands from circuit 9. For the purpose, the substitution-desired programs in memory 4 are replaced in memory 8; when substitution-desired programs in memory 4 are replaced, circuit 9 connects programs in memory 8 to processor 1 and when other programs in memory 4, circuit 9 connects programs in memory 4 to processor 1 for the test.
COPYRIGHT: (C)1980,JPO&Japio
JP2891179A 1979-03-13 1979-03-13 Microprocessor analyzer Pending JPS55121559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2891179A JPS55121559A (en) 1979-03-13 1979-03-13 Microprocessor analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2891179A JPS55121559A (en) 1979-03-13 1979-03-13 Microprocessor analyzer

Publications (1)

Publication Number Publication Date
JPS55121559A true JPS55121559A (en) 1980-09-18

Family

ID=12261576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2891179A Pending JPS55121559A (en) 1979-03-13 1979-03-13 Microprocessor analyzer

Country Status (1)

Country Link
JP (1) JPS55121559A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180069A (en) * 1984-09-28 1986-04-23 Yokogawa Hokushin Electric Corp Program rom emulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180069A (en) * 1984-09-28 1986-04-23 Yokogawa Hokushin Electric Corp Program rom emulator

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