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JPS5690358A - Computer having programmable read-only memory - Google Patents

Computer having programmable read-only memory

Info

Publication number
JPS5690358A
JPS5690358A JP16802679A JP16802679A JPS5690358A JP S5690358 A JPS5690358 A JP S5690358A JP 16802679 A JP16802679 A JP 16802679A JP 16802679 A JP16802679 A JP 16802679A JP S5690358 A JPS5690358 A JP S5690358A
Authority
JP
Japan
Prior art keywords
unit
rom
write
program
word
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
JP16802679A
Other languages
Japanese (ja)
Other versions
JPS608557B2 (en
Inventor
Tomohide Kubo
Naoki Sano
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP54168026A priority Critical patent/JPS608557B2/en
Publication of JPS5690358A publication Critical patent/JPS5690358A/en
Publication of JPS608557B2 publication Critical patent/JPS608557B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Read Only Memory (AREA)
  • Microcomputers (AREA)
  • Memory System (AREA)

Abstract

PURPOSE: To execute writing of a P-ROM in the state that the P-ROM is being mounted or the computer, by providing a unit for giving write voltage and a write timing signal to the P-ROM, to execute wirte of the P-ROM.
CONSTITUTION: When a program of the write unit 3 has been started, the CPU1 reads out the first word of a program in the input medium 4 through the I/O interface 4, and is about to write it to the P-ROM unit 2. In this case, the unit 2 generates a write condition forming signal PM, and provides it to the unit 3. As a result, the unit 3 generates voltage VPP of enough energy for writing the information to the unit 2, and a write timing signal PP, and provides them to the unit 2. As a result, a program word as provided from the CPU1 is written to the unit 2. After that, each word of the program of the medium 41 is written in order to the unit 2 by the same operation.
COPYRIGHT: (C)1981,JPO&Japio
JP54168026A 1979-12-24 1979-12-24 Computer with programmable read-only memory Expired JPS608557B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54168026A JPS608557B2 (en) 1979-12-24 1979-12-24 Computer with programmable read-only memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54168026A JPS608557B2 (en) 1979-12-24 1979-12-24 Computer with programmable read-only memory

Publications (2)

Publication Number Publication Date
JPS5690358A true JPS5690358A (en) 1981-07-22
JPS608557B2 JPS608557B2 (en) 1985-03-04

Family

ID=15860431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54168026A Expired JPS608557B2 (en) 1979-12-24 1979-12-24 Computer with programmable read-only memory

Country Status (1)

Country Link
JP (1) JPS608557B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184668A (en) * 1982-04-22 1983-10-28 Fanuc Ltd Control system for writing to memory
JPS59107491A (en) * 1982-12-10 1984-06-21 Nippon Telegr & Teleph Corp <Ntt> Ic card
JPS61245272A (en) * 1985-04-24 1986-10-31 Nippon Denso Co Ltd One chip microcomputer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63115660U (en) * 1987-01-23 1988-07-26

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184668A (en) * 1982-04-22 1983-10-28 Fanuc Ltd Control system for writing to memory
JPH0449199B2 (en) * 1982-04-22 1992-08-10 Fanuc Ltd
JPS59107491A (en) * 1982-12-10 1984-06-21 Nippon Telegr & Teleph Corp <Ntt> Ic card
JPS622399B2 (en) * 1982-12-10 1987-01-19 Nippon Denshin Denwa Kk
JPS61245272A (en) * 1985-04-24 1986-10-31 Nippon Denso Co Ltd One chip microcomputer

Also Published As

Publication number Publication date
JPS608557B2 (en) 1985-03-04

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