公开(公告)号：AT146886T

公开(公告)日：1997-01-15

申请号：AT90115517

申请日：1990-08-13

Applicant: IBM

Inventor： BLANDY GEOFFREY OWEN ,  EMMES DAVID BRUCE ,  HILL RONALD FRANKLIN ,  LINDQUIST DAVID BRUCE ,  PLAMBECK KENNETH ERNEST ,  SCALZI CASPER ANTHONY ,  SCHMALZ RICHARD JOHN

IPC: G06F12/10 ,  G06F12/14

Abstract: A single non-privileged instruction copies a page of data from a source virtual address to a destination virtual address, regardless of which of plural electronic storage media contain the page locations, and without the intervention of any supervisory program when media and virtual addressing have been previously determined for the locations of the subject pages. The instruction is not required to specify which of the plural media it will use, does not require its user to know what backing media it will access, does not require main storage (MS) to be one of its backing media, and allows different types of physical addressing to be used by the different backing media. The instruction can lock any page for use in an MP. No physical direction of data movement is provided within the non-privileged machine instruction, which only designates virtual direction of movement. The separation of virtual direction from physical direction is done by avoiding instruction control over selection of electronic media. The non-privileged instruction can nevertheless express a preference for obtaining a copy of the destination page in an electronic medium in which the content of the page can be processed by further instructions. Also, the instruction can cause invocation of a privileged control program to avoid the need for a following condition code test instruction. A privileged instruction is also provided to wait for the completion of the unprivileged instruction and to invalidate a non-main storage (MS) medium page whether it is unlocked or locked, either correctly or incorrectly.

公开(公告)号：DE69029504T2

公开(公告)日：1997-07-17

申请号：DE69029504

申请日：1990-08-13

Applicant: IBM

Inventor： BLANDY GEOFFREY OWEN ,  EMMES DAVID BRUCE ,  HILL RONALD FRANKLIN ,  LINDQUIST DAVID BRUCE ,  PLAMBECK KENNETH ERNEST ,  SCALZI CASPER ANTHONY ,  SCHMALZ RICHARD JOHN

IPC: G06F12/10 ,  G06F12/14

Abstract: A single non-privileged instruction copies a page of data from a source virtual address to a destination virtual address, regardless of which of plural electronic storage media contain the page locations, and without the intervention of any supervisory program when media and virtual addressing have been previously determined for the locations of the subject pages. The instruction is not required to specify which of the plural media it will use, does not require its user to know what backing media it will access, does not require main storage (MS) to be one of its backing media, and allows different types of physical addressing to be used by the different backing media. The instruction can lock any page for use in an MP. No physical direction of data movement is provided within the non-privileged machine instruction, which only designates virtual direction of movement. The separation of virtual direction from physical direction is done by avoiding instruction control over selection of electronic media. The non-privileged instruction can nevertheless express a preference for obtaining a copy of the destination page in an electronic medium in which the content of the page can be processed by further instructions. Also, the instruction can cause invocation of a privileged control program to avoid the need for a following condition code test instruction. A privileged instruction is also provided to wait for the completion of the unprivileged instruction and to invalidate a non-main storage (MS) medium page whether it is unlocked or locked, either correctly or incorrectly.

公开(公告)号：DE69029504D1

公开(公告)日：1997-02-06

申请号：DE69029504

申请日：1990-08-13

Applicant: IBM

Inventor： BLANDY GEOFFREY OWEN ,  EMMES DAVID BRUCE ,  HILL RONALD FRANKLIN ,  LINDQUIST DAVID BRUCE ,  PLAMBECK KENNETH ERNEST ,  SCALZI CASPER ANTHONY ,  SCHMALZ RICHARD JOHN

IPC: G06F12/10 ,  G06F12/14

Abstract: A single non-privileged instruction copies a page of data from a source virtual address to a destination virtual address, regardless of which of plural electronic storage media contain the page locations, and without the intervention of any supervisory program when media and virtual addressing have been previously determined for the locations of the subject pages. The instruction is not required to specify which of the plural media it will use, does not require its user to know what backing media it will access, does not require main storage (MS) to be one of its backing media, and allows different types of physical addressing to be used by the different backing media. The instruction can lock any page for use in an MP. No physical direction of data movement is provided within the non-privileged machine instruction, which only designates virtual direction of movement. The separation of virtual direction from physical direction is done by avoiding instruction control over selection of electronic media. The non-privileged instruction can nevertheless express a preference for obtaining a copy of the destination page in an electronic medium in which the content of the page can be processed by further instructions. Also, the instruction can cause invocation of a privileged control program to avoid the need for a following condition code test instruction. A privileged instruction is also provided to wait for the completion of the unprivileged instruction and to invalidate a non-main storage (MS) medium page whether it is unlocked or locked, either correctly or incorrectly.