JPS5553724A - Subchannel access system - Google Patents

Subchannel access system

Info

Publication number
JPS5553724A
JPS5553724A JP12572978A JP12572978A JPS5553724A JP S5553724 A JPS5553724 A JP S5553724A JP 12572978 A JP12572978 A JP 12572978A JP 12572978 A JP12572978 A JP 12572978A JP S5553724 A JPS5553724 A JP S5553724A
Authority
JP
Japan
Prior art keywords
register
given
designation
als3
routine
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
JP12572978A
Other languages
Japanese (ja)
Other versions
JPS6048782B2 (en
Inventor
Takeshi Watanabe
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 JP12572978A priority Critical patent/JPS6048782B2/en
Publication of JPS5553724A publication Critical patent/JPS5553724A/en
Publication of JPS6048782B2 publication Critical patent/JPS6048782B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate occurrence of the bug even in execution of the routine which is used in common to several levels by designating the register based on the information given from the register which holds the level number under running.
CONSTITUTION: For address local storage ALS3, the designation [one designation among ALS(0)W(3)] is given to the register to set the higher part of the address to give access to the subchannel of memory 4 based on the information given from pointer register 1 which latches the running level number of the microprogram at the moment of designation. As a result, the rewriting is given only to the contents of the register of ALS3 corresponding to the level of the microorder under running, and is never given to the contents of the register corresponding to other levels sharing the routine. Thus no malfunction takes place.
COPYRIGHT: (C)1980,JPO&Japio
JP12572978A 1978-10-14 1978-10-14 Subchannel access method Expired JPS6048782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12572978A JPS6048782B2 (en) 1978-10-14 1978-10-14 Subchannel access method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12572978A JPS6048782B2 (en) 1978-10-14 1978-10-14 Subchannel access method

Publications (2)

Publication Number Publication Date
JPS5553724A true JPS5553724A (en) 1980-04-19
JPS6048782B2 JPS6048782B2 (en) 1985-10-29

Family

ID=14917329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12572978A Expired JPS6048782B2 (en) 1978-10-14 1978-10-14 Subchannel access method

Country Status (1)

Country Link
JP (1) JPS6048782B2 (en)

Also Published As

Publication number Publication date
JPS6048782B2 (en) 1985-10-29

Similar Documents

Publication Publication Date Title
JPS5657149A (en) Multiprogram data processor
JPS564862A (en) Computer system
JPS5525812A (en) Writing system for error correction code
JPS54117640A (en) Memory address designation system
JPS5553724A (en) Subchannel access system
JPS5326632A (en) Common memory control unit
JPS54122059A (en) Inter-processor information transfer system
JPS54108539A (en) Virtual memory control system of information processor
JPS5658196A (en) Memory device having memory part for test
JPS5563442A (en) Address set control system
JPS5436144A (en) Address conversion unit
JPS5576446A (en) Pre-fetch control system
JPS5561855A (en) Level control system
JPS55105761A (en) Address conversion system
JPS5785148A (en) Instruction sequence control device
JPS563485A (en) Buffer memory device
JPS55118170A (en) Memory access device
JPS5614358A (en) Operation log storing system
JPS5580163A (en) Calculation unit for appreciation of computer system
JPS54142021A (en) Data process system
JPS5696336A (en) Processing system for multilayer level microprogram
JPS5566029A (en) Debug unit
JPS5523571A (en) Error processing system of data processing unit
JPS5510659A (en) Data processor
JPS5613575A (en) Memory system