JPS5729123A - One-chip microcomputer - Google Patents
One-chip microcomputerInfo
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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.
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)
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 |
-
1980
- 1980-07-29 JP JP10450380A patent/JPS5729123A/en active Pending
Cited By (7)
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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