JPS5729123A - One-chip microcomputer - Google Patents

One-chip microcomputer

Info

Publication number
JPS5729123A
JPS5729123A JP10450380A JP10450380A JPS5729123A JP S5729123 A JPS5729123 A JP S5729123A JP 10450380 A JP10450380 A JP 10450380A JP 10450380 A JP10450380 A JP 10450380A JP S5729123 A JPS5729123 A JP S5729123A
Authority
JP
Japan
Prior art keywords
rom
ram
chip microcomputer
mass
software
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
JP10450380A
Other languages
Japanese (ja)
Inventor
Sachihiro Nakanishi
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.)
Densei Communication Inc
Original Assignee
Densei Communication Inc
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 Densei Communication Inc filed Critical Densei Communication Inc
Priority to JP10450380A priority Critical patent/JPS5729123A/en
Publication of JPS5729123A publication Critical patent/JPS5729123A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/445—Program loading or initiating

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microcomputers (AREA)

Abstract

PURPOSE:To modify and increase additionally the contents of a program upon occasion by connecting the mass-storage RAM of a one-chip microcomputer to an ROM in another body, and by loading system software from the ROM into the RAM. CONSTITUTION:A one-chip microcomputer A has a small-storage ROM for a program memory, a mass-storage RAM used even for software, a CPU, etc., and its RAM is connected to an ROM in a different body. Once a power source is put to work, system software is loaded from the different-body ROM into the mass-storage RAM, where the software is executed to input information on addresses, etc., from the RAM to the different-body ROM via an address counter. Consequelty, another desired ROM is used at a user side to modify or increase additionally the contents of a program later upon occasion, and a general-purpose system is constituted.
JP10450380A 1980-07-29 1980-07-29 One-chip microcomputer Pending JPS5729123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10450380A JPS5729123A (en) 1980-07-29 1980-07-29 One-chip microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10450380A JPS5729123A (en) 1980-07-29 1980-07-29 One-chip microcomputer

Publications (1)

Publication Number Publication Date
JPS5729123A true JPS5729123A (en) 1982-02-17

Family

ID=14382302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10450380A Pending JPS5729123A (en) 1980-07-29 1980-07-29 One-chip microcomputer

Country Status (1)

Country Link
JP (1) JPS5729123A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190752U (en) * 1982-06-14 1983-12-19 パイオニア株式会社 One chip microcontroller
JPS59180735A (en) * 1983-03-31 1984-10-13 Fuji Facom Corp System for changing program of microprocessor
JPH03228191A (en) * 1990-02-01 1991-10-09 Nec Corp Microcomputer
US5798885A (en) * 1994-06-06 1998-08-25 Fujitsu Limited Head positioning control for disk apparatus using peak detection, polarity detection and sector mark detection

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190752U (en) * 1982-06-14 1983-12-19 パイオニア株式会社 One chip microcontroller
JPS59180735A (en) * 1983-03-31 1984-10-13 Fuji Facom Corp System for changing program of microprocessor
JPH03228191A (en) * 1990-02-01 1991-10-09 Nec Corp Microcomputer
US5798885A (en) * 1994-06-06 1998-08-25 Fujitsu Limited Head positioning control for disk apparatus using peak detection, polarity detection and sector mark detection
US5963398A (en) * 1994-06-06 1999-10-05 Fujitsu Limited Disk apparatus with voice coil motor
US6016547A (en) * 1994-06-06 2000-01-18 Fujitsu Limited Data processing apparatus with program allocating section for selectively allocating programs in first and second memory
US6137646A (en) * 1994-06-06 2000-10-24 Fujitsu Limited Disk apparatus using coincidence detection to generate variable sector pulses

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