JPS5574624A - Channel unit - Google Patents

Channel unit

Info

Publication number
JPS5574624A
JPS5574624A JP14788078A JP14788078A JPS5574624A JP S5574624 A JPS5574624 A JP S5574624A JP 14788078 A JP14788078 A JP 14788078A JP 14788078 A JP14788078 A JP 14788078A JP S5574624 A JPS5574624 A JP S5574624A
Authority
JP
Japan
Prior art keywords
block
count
section
transfer
byte
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
JP14788078A
Other languages
Japanese (ja)
Inventor
Tetsuji Ogawa
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 JP14788078A priority Critical patent/JPS5574624A/en
Publication of JPS5574624A publication Critical patent/JPS5574624A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bus Control (AREA)

Abstract

PURPOSE: To enable to transfer a plurality of fixed length of data blocks with a single CCW (channel command word), by reserving the block chain bit and block count in CCW.
CONSTITUTION: CCW4 is loaded to the register 37 from the storage 31, and the byte count section and block count section are transferred to the count register 32. The byte count section is used for count calculation of data transfer in one block with the byte counter 38 and subtractor 36. When the data transfer of one block's share is finished, the flag detector 35 inspects the effectiveness of the block chain bit BC, and if effective, the command represented in CCW4 is again delivered to the input and output unit. The block counter section is renewed by -1 with the subtractor 33 every said operation. The all zero detection section 34 detects the end of all block transfer end.
COPYRIGHT: (C)1980,JPO&Japio
JP14788078A 1978-12-01 1978-12-01 Channel unit Pending JPS5574624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14788078A JPS5574624A (en) 1978-12-01 1978-12-01 Channel unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14788078A JPS5574624A (en) 1978-12-01 1978-12-01 Channel unit

Publications (1)

Publication Number Publication Date
JPS5574624A true JPS5574624A (en) 1980-06-05

Family

ID=15440302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14788078A Pending JPS5574624A (en) 1978-12-01 1978-12-01 Channel unit

Country Status (1)

Country Link
JP (1) JPS5574624A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05626U (en) * 1991-06-19 1993-01-08 東洋エコー株式会社 Wrapping paper box
US5517670A (en) * 1992-12-30 1996-05-14 International Business Machines Corporation Adaptive data transfer channel employing extended data block capability
US11319106B2 (en) 2017-08-24 2022-05-03 Stora Enso Oyj Leakproof and liquid-tight packaging box of corrugated board and method for fabricating it

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05626U (en) * 1991-06-19 1993-01-08 東洋エコー株式会社 Wrapping paper box
US5517670A (en) * 1992-12-30 1996-05-14 International Business Machines Corporation Adaptive data transfer channel employing extended data block capability
US5539918A (en) * 1992-12-30 1996-07-23 International Business Machines Corporation Extension of data block capability in a data transfer channel
US11319106B2 (en) 2017-08-24 2022-05-03 Stora Enso Oyj Leakproof and liquid-tight packaging box of corrugated board and method for fabricating it

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