公开(公告)号：DE69123014D1

公开(公告)日：1996-12-12

申请号：DE69123014

申请日：1991-08-09

Applicant: IBM

Inventor： BEARDSLEY BRENT CAMERON ,  BELLO KEITH ANTHONY ,  BENHASE MICHAEL THOMAS ,  CLARK FLORENCE JOANN ,  HUNTER PAUL WAYNE ,  NORDAHL DONALD MARVIN

IPC: G06F13/12 ,  G06F3/06

Abstract: A control unit (12) for DASD operation to transfer data between the device (13) and a buffer (16) and between a channel (11) and a buffer (16). In that manner the channel and device are enabled to transfer data independently of each other. Mechanisms are provided for communication between the channel interface process in the control unit and the device interface process in the control unit. Some of these mechanisms are stored with the record in the buffer and others are stored in control storage. Principle communicating mechanisms include a device record pointer, a channel record pointer, a next operation field, a device state indicator, record control flags, and two buffer pointers.

公开(公告)号：CA2046720C

公开(公告)日：1995-10-24

申请号：CA2046720

申请日：1991-07-10

Applicant: IBM

Inventor： BEARDSLEY BRENT CAMERON ,  BELLO KEITH ANTHONY ,  BENHASE MICHAEL THOMAS ,  CLARK FLORENCE JOANN ,  HUNTER PAUL WAYNE ,  NORDAHL DONALD MARVIN

IPC: G06F13/12 ,  G06F3/06 ,  G06F12/00 ,  G06F13/00

Abstract: A control unit for DASD operation to transfer data between the device and a buffer and between a channel and a buffer. In that manner the channel and device are enabled to transfer data independently of each other. Mechanisms are provided for communication between the channel interface process in the control unit and the device interface process in the control unit. Some of these mechanisms are stored with the record in the buffer and others are stored in control storage. Principle communicating mechanisms include a device record pointer, a channel record pointer, a next operation field, a device state indicator, record control flags, and two buffer pointers.

公开(公告)号：AU5353479A

公开(公告)日：1980-07-03

申请号：AU5353479

申请日：1979-12-06

Applicant: IBM

Inventor： MALACCORTO ALEXANDER EDWARD ,  HUNTER PAUL WAYNE

IPC: G06F13/10 ,  G06F3/06 ,  G06F13/12 ,  G06F13/00

公开(公告)号：DE69023018D1

公开(公告)日：1995-11-23

申请号：DE69023018

申请日：1990-02-06

Applicant: IBM

Inventor： CHANG TAI-LIN ,  HUNTER PAUL WAYNE ,  LANG DONALD JOHN ,  LUNING STEPHEN GOUZE

IPC: G06F9/48 ,  G06F13/26

Abstract: In a programmed machine, such as an peripheral controller, programmed operations are executed in a one of several operational contexts. Each context may be initiated by a corresponding interruption signal. Any context which has been activated remains active until quiesced by program execution. One of the active contexts is a current context in which all instruction executions are currently occurring. In each cycle of the programmed machine, all active contexts and received and stored interruption signals, each for respective ones of the contexts, are compared to find the context highest priority context. Such highest priority context is compared with the current context priority for determining whether or not the programmed machine should change current contexts.

公开(公告)号：AU539004B2

公开(公告)日：1984-09-06

申请号：AU5353479

申请日：1979-12-06

Applicant: IBM

Inventor： MALACCORTO ALEXANDER EDWARD ,  HUNTER PAUL WAYNE

IPC: G06F13/10 ,  G06F3/06 ,  G06F13/12 ,  G06F13/00 ,  G06F13/04

公开(公告)号：DE69023018T2

公开(公告)日：1996-05-30

申请号：DE69023018

申请日：1990-02-06

Applicant: IBM

Inventor： CHANG TAI-LIN ,  HUNTER PAUL WAYNE ,  LANG DONALD JOHN ,  LUNING STEPHEN GOUZE

IPC: G06F9/48 ,  G06F13/26

Abstract: In a programmed machine, such as an peripheral controller, programmed operations are executed in a one of several operational contexts. Each context may be initiated by a corresponding interruption signal. Any context which has been activated remains active until quiesced by program execution. One of the active contexts is a current context in which all instruction executions are currently occurring. In each cycle of the programmed machine, all active contexts and received and stored interruption signals, each for respective ones of the contexts, are compared to find the context highest priority context. Such highest priority context is compared with the current context priority for determining whether or not the programmed machine should change current contexts.

公开(公告)号：DE2965411D1

公开(公告)日：1983-06-16

申请号：DE2965411

申请日：1979-12-10

Applicant: IBM

Inventor： MALACCORTO ALEXANDER EDWARD ,  HUNTER PAUL WAYNE

IPC: G06F13/10 ,  G06F3/06 ,  G06F13/12 ,  G06F13/04 ,  G06F9/06