JPS62281037A - Interface unit with reading ahead function for memory data - Google Patents

Interface unit with reading ahead function for memory data

Info

Publication number
JPS62281037A
JPS62281037A JP61124901A JP12490186A JPS62281037A JP S62281037 A JPS62281037 A JP S62281037A JP 61124901 A JP61124901 A JP 61124901A JP 12490186 A JP12490186 A JP 12490186A JP S62281037 A JPS62281037 A JP S62281037A
Authority
JP
Japan
Prior art keywords
information processor
missing page
address
transfer
memory data
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
JP61124901A
Other languages
Japanese (ja)
Inventor
Yasunori Maki
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP61124901A priority Critical patent/JPS62281037A/en
Publication of JPS62281037A publication Critical patent/JPS62281037A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To correspond to a data transfer from the main memory of an information processor to that of another information processor. Even when a missing page is generated during the reading ahead operation of a memory data, by detecting whether a corresponding address is within a transfer range or not.
CONSTITUTION: By recognizing the vacancy of a buffer memory 37a before the count value of a counter 34 goes to zero, a control part 31 decides that the address where the missing page is generated, is within the transfer range, and returns an abnormal completion interruption, and the status of the generation of the missing page, to a CPU51a in an information processor 50a requesting the data transfer, through a control logic 38a, and a system bus 54a. On the other hand, by recognizing the count value of the counter 34 as zero before the buffer memory 37a becomes vacant, the control part decides that the address where the missing page is generated, is out of the transfer range, and returns a normal completion interruption to the CPU51a in the information processor. 50a requesting the data transfer, through the control logic 38a, and the system bus 54a, and resets an F/F39a.
COPYRIGHT: (C)1987,JPO&Japio
JP61124901A 1986-05-30 1986-05-30 Interface unit with reading ahead function for memory data Pending JPS62281037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61124901A JPS62281037A (en) 1986-05-30 1986-05-30 Interface unit with reading ahead function for memory data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61124901A JPS62281037A (en) 1986-05-30 1986-05-30 Interface unit with reading ahead function for memory data

Publications (1)

Publication Number Publication Date
JPS62281037A true JPS62281037A (en) 1987-12-05

Family

ID=14896911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61124901A Pending JPS62281037A (en) 1986-05-30 1986-05-30 Interface unit with reading ahead function for memory data

Country Status (1)

Country Link
JP (1) JPS62281037A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0362202A (en) * 1989-07-31 1991-03-18 Japan Electron Control Syst Co Ltd Control program developing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0362202A (en) * 1989-07-31 1991-03-18 Japan Electron Control Syst Co Ltd Control program developing device

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