JPS61245253A - Input and output control system for virtual computer - Google Patents

Input and output control system for virtual computer

Info

Publication number
JPS61245253A
JPS61245253A JP60086356A JP8635685A JPS61245253A JP S61245253 A JPS61245253 A JP S61245253A JP 60086356 A JP60086356 A JP 60086356A JP 8635685 A JP8635685 A JP 8635685A JP S61245253 A JPS61245253 A JP S61245253A
Authority
JP
Japan
Prior art keywords
virtual
address
input
record
produced
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
JP60086356A
Other languages
Japanese (ja)
Inventor
Shigeo Takasaki
Takashige Kubo
Junichi Imura
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 JP60086356A priority Critical patent/JPS61245253A/en
Publication of JPS61245253A publication Critical patent/JPS61245253A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To perform the input/output processing of a virtual computer at a high speed by applying a virtual input/output system not only to a virtual disk produced temporarily but to a magnetic disk device containing a permanent file.
CONSTITUTION: A control table 54 is produced in response to the address of a virtual device described to a VDISKF. Then a has table 57 needed for conversion into a virtual address to a CCHHR is secured together with a synonym table 58. The addresses of these tables are set within the table 54. At the same time, a virtual memory space is produced and its segment address is also set on the table 54. A buffer equivalent to the track length is secured in order to read out the record on a real disk for each track. Then zero is set as the initial value of the virtual address. This virtual address is replaced by adding the length of both key and data parts of each record together as the record is read into a virtual disk space.
COPYRIGHT: (C)1986,JPO&Japio
JP60086356A 1985-04-24 1985-04-24 Input and output control system for virtual computer Pending JPS61245253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60086356A JPS61245253A (en) 1985-04-24 1985-04-24 Input and output control system for virtual computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60086356A JPS61245253A (en) 1985-04-24 1985-04-24 Input and output control system for virtual computer

Publications (1)

Publication Number Publication Date
JPS61245253A true JPS61245253A (en) 1986-10-31

Family

ID=13884610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60086356A Pending JPS61245253A (en) 1985-04-24 1985-04-24 Input and output control system for virtual computer

Country Status (1)

Country Link
JP (1) JPS61245253A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11345134A (en) * 1998-06-03 1999-12-14 Hitachi Ltd Operating system
JP3680142B2 (en) * 1997-12-05 2005-08-10 東京エレクトロンデバイス株式会社 Storage device and access method
US7895476B2 (en) 2006-12-12 2011-02-22 Fujitsu Limited Data relay device, storage device and data-relay method
JP5251974B2 (en) * 2008-04-11 2013-07-31 富士通株式会社 Management device, management method, and program

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3680142B2 (en) * 1997-12-05 2005-08-10 東京エレクトロンデバイス株式会社 Storage device and access method
JPH11345134A (en) * 1998-06-03 1999-12-14 Hitachi Ltd Operating system
US7895476B2 (en) 2006-12-12 2011-02-22 Fujitsu Limited Data relay device, storage device and data-relay method
JP5251974B2 (en) * 2008-04-11 2013-07-31 富士通株式会社 Management device, management method, and program

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