JPS56116139A - Production system of transfer data quantity - Google Patents

Production system of transfer data quantity

Info

Publication number
JPS56116139A
JPS56116139A JP1892080A JP1892080A JPS56116139A JP S56116139 A JPS56116139 A JP S56116139A JP 1892080 A JP1892080 A JP 1892080A JP 1892080 A JP1892080 A JP 1892080A JP S56116139 A JPS56116139 A JP S56116139A
Authority
JP
Japan
Prior art keywords
data
transferred
length
memory
transfer 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.)
Granted
Application number
JP1892080A
Other languages
Japanese (ja)
Other versions
JPH0133848B2 (en
Inventor
Osamu Suzuki
Masahiro Kawakatsu
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1892080A priority Critical patent/JPS56116139A/en
Publication of JPS56116139A publication Critical patent/JPS56116139A/en
Publication of JPH0133848B2 publication Critical patent/JPH0133848B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/16—Handling requests for interconnection or transfer for access to memory bus

Landscapes

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

Abstract

PURPOSE:To ensure an effective transfer of data between a memory and the data transmission/reception part, by deciding the length of data in such way so as not cause the undesired page cross. CONSTITUTION:The register 6 holds the data length information BC to the length of the data to be transferred; and the register 5 holds the address information DA concerning the head address to be given an access to a memory. Based on this address information, the quantity of data to be transferred first is calculated at the arithmetic parts 16 and 17, and the quantity of data to be transferred finally is calculated at the final data quantity arithmetic part 17. In such way, the length of data is decided so as to cause any undesired page cross in case a data is transferred between a memory and the data transmission/reception part.
JP1892080A 1980-02-18 1980-02-18 Production system of transfer data quantity Granted JPS56116139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1892080A JPS56116139A (en) 1980-02-18 1980-02-18 Production system of transfer data quantity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1892080A JPS56116139A (en) 1980-02-18 1980-02-18 Production system of transfer data quantity

Publications (2)

Publication Number Publication Date
JPS56116139A true JPS56116139A (en) 1981-09-11
JPH0133848B2 JPH0133848B2 (en) 1989-07-17

Family

ID=11985041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1892080A Granted JPS56116139A (en) 1980-02-18 1980-02-18 Production system of transfer data quantity

Country Status (1)

Country Link
JP (1) JPS56116139A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6292053A (en) * 1985-10-18 1987-04-27 Fujitsu Ltd Control system for transfer of direct memory access
JPH01233646A (en) * 1988-03-15 1989-09-19 Fujitsu Ltd Data transfer control system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50158239A (en) * 1974-06-10 1975-12-22
JPS5130441A (en) * 1974-09-09 1976-03-15 Hitachi Ltd
JPS5474640A (en) * 1977-11-28 1979-06-14 Hitachi Ltd Channel unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50158239A (en) * 1974-06-10 1975-12-22
JPS5130441A (en) * 1974-09-09 1976-03-15 Hitachi Ltd
JPS5474640A (en) * 1977-11-28 1979-06-14 Hitachi Ltd Channel unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6292053A (en) * 1985-10-18 1987-04-27 Fujitsu Ltd Control system for transfer of direct memory access
JPH01233646A (en) * 1988-03-15 1989-09-19 Fujitsu Ltd Data transfer control system

Also Published As

Publication number Publication date
JPH0133848B2 (en) 1989-07-17

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