JPS54116847A - Memory control system - Google Patents

Memory control system

Info

Publication number
JPS54116847A
JPS54116847A JP2347678A JP2347678A JPS54116847A JP S54116847 A JPS54116847 A JP S54116847A JP 2347678 A JP2347678 A JP 2347678A JP 2347678 A JP2347678 A JP 2347678A JP S54116847 A JPS54116847 A JP S54116847A
Authority
JP
Japan
Prior art keywords
cpu
software
cpus
series
memory
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
JP2347678A
Other languages
Japanese (ja)
Inventor
Masao Wanami
Yoshiaki Tokita
Tahei Suzuki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2347678A priority Critical patent/JPS54116847A/en
Publication of JPS54116847A publication Critical patent/JPS54116847A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To simplify the formation of software, to make program simple, and to improve capability of debugging by enabling the software to attain access to a memory without relating to CPUs by making each CPU perform CPU-series-number qualification independently.
CONSTITUTION: Corresponding to CPUs, main memory unit MM is provided with system areas of the same contents independently from any head address of unit MM in the order of CPU series numbers, and each CPU is provided with its-own- address memory register 25, whose contents are enabled to be inputted to shifter 14 via shifter decoder 15. As for system access at the interrupt-standby time, only one instruction including at least a relative address inside of the system area is given and each CPU performs CPU-series-number qualification independently by an arithmetic function of the CPU to enable the software to attain memory access without relating to CPUs. As a result, the formation of the software is simplified, the program is made simple, and the capability of debugging is improved.
COPYRIGHT: (C)1979,JPO&Japio
JP2347678A 1978-03-03 1978-03-03 Memory control system Pending JPS54116847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2347678A JPS54116847A (en) 1978-03-03 1978-03-03 Memory control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2347678A JPS54116847A (en) 1978-03-03 1978-03-03 Memory control system

Publications (1)

Publication Number Publication Date
JPS54116847A true JPS54116847A (en) 1979-09-11

Family

ID=12111576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2347678A Pending JPS54116847A (en) 1978-03-03 1978-03-03 Memory control system

Country Status (1)

Country Link
JP (1) JPS54116847A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875121U (en) * 1981-11-16 1983-05-20 石川島芝浦機械株式会社 Tractor hydraulic operating device
JPS6083168A (en) * 1983-10-05 1985-05-11 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Multiprocessor system control
JPH023226A (en) * 1988-06-20 1990-01-08 Fujitsu Ltd Manufacture of semiconductor device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875121U (en) * 1981-11-16 1983-05-20 石川島芝浦機械株式会社 Tractor hydraulic operating device
JPS6218101Y2 (en) * 1981-11-16 1987-05-11
JPS6083168A (en) * 1983-10-05 1985-05-11 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Multiprocessor system control
JPH02734B2 (en) * 1983-10-05 1990-01-09 Intaanashonaru Bijinesu Mashiinzu Corp
JPH023226A (en) * 1988-06-20 1990-01-08 Fujitsu Ltd Manufacture of semiconductor device

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