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公开(公告)号：DE3786660D1
公开(公告)日：1993-08-26
申请号：DE3786660
申请日：1987-12-15
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , DAYAN RICHARD ALAN , DORIA DAVID JOSEPH , KINNEAR SCOTT GERARD , KRANTZ JEFFREY ISSAC , LIVERMAN ROBERT BRITTON , SOTOMAYOR GUY GIL , WILLIAMS DONALD DORSEY , VAISKAUCKAS GARY ANTHONY
Abstract: A computer system and method for operating a computer system capable of running in mutually incompatible real and protected addressing modes, in which programs written for one mode can be run in the other mode without modification. The BIOS assembles two different common data areas for the two modes, each inclusive of device block pointers, function transfer table pointers, data pointers, and function pointers. The common data area for the real mode is assembled first. To assemble the pointers for the protected mode common data area, the offset values from the real mode area are copied directly, and then selector values are inserted whose physical addresses correspond to the segments of the corresponding pointers in the real mode area. The selector values are derived from a segment descriptor table.
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公开(公告)号：GB2202657A
公开(公告)日：1988-09-28
申请号：GB8728922
申请日：1987-12-10
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , DAYAN RICHARD ALAN , DORIA DAVID JOSEPH , KINNEAR SCOTT GERARD , KRANTZ JEFFREY ISSAC , LIVERMAN ROBERT BRITTON , SOTOMAYOR GUY GIL , WILLIAMS DONALD DORSEY , VAISKAUCKAS GARY ANTHONY
Abstract: A computer system and method for operating a computer system capable of running in mutually incompatible real and protected addressing modes, in which programs written for one mode can be run in the other mode without modification. The BIOS assembles two different common data areas for the two modes, each inclusive of device block pointers, function transfer table pointers, data pointers, and function pointers. The common data area for the real mode is assembled first. To assemble the pointers for the protected mode common data area, the offset values from the real mode area are copied directly, and then selector values are inserted whose physical addresses correspond to the segments of the corresponding pointers in the real mode area. The selector values are derived from a segment descriptor table.
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公开(公告)号：IN172601B
公开(公告)日：1993-10-23
申请号：IN180DE1988
申请日：1988-03-09
Applicant: IBM
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公开(公告)号：AT91812T
公开(公告)日：1993-08-15
申请号：AT87118538
申请日：1987-12-15
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , DAYAN RICHARD ALAN , DORIA DAVID JOSEPH , KINNEAR SCOTT GERARD , KRANTZ JEFFREY ISSAC , LIVERMAN ROBERT BRITTON , SOTOMAYOR GUY GIL , WILLIAMS DONALD DORSEY , VAISKAUCKAS GARY ANTHONY
Abstract: A computer system and method for operating a computer system capable of running in mutually incompatible real and protected addressing modes, in which programs written for one mode can be run in the other mode without modification. The BIOS assembles two different common data areas for the two modes, each inclusive of device block pointers, function transfer table pointers, data pointers, and function pointers. The common data area for the real mode is assembled first. To assemble the pointers for the protected mode common data area, the offset values from the real mode area are copied directly, and then selector values are inserted whose physical addresses correspond to the segments of the corresponding pointers in the real mode area. The selector values are derived from a segment descriptor table.
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Patent Agency Ranking
公开(公告)号：DE69202825D1
公开(公告)日：1995-07-13
申请号：DE69202825
申请日：1992-06-16
Applicant: IBM
Inventor： WILLIAMS DONALD DORSEY
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公开(公告)号：HK33992A
公开(公告)日：1992-05-15
申请号：HK33992
申请日：1992-05-07
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , DAYAN RICHARD ALAN , DORIA DAVID JOSEPH , KINNEAR SCOTT GERARD , KRANTZ JEFFREY ISSAC , LIVERMAN ROBERT BRITTON , SOTOMAYOR GUY GIL , WILLIAMS DONALD DORSEY , VAISKAUCKAS GARY ANTHONY
Abstract: A computer system and method for operating a computer system capable of running in mutually incompatible real and protected addressing modes, in which programs written for one mode can be run in the other mode without modification. The BIOS assembles two different common data areas for the two modes, each inclusive of device block pointers, function transfer table pointers, data pointers, and function pointers. The common data area for the real mode is assembled first. To assemble the pointers for the protected mode common data area, the offset values from the real mode area are copied directly, and then selector values are inserted whose physical addresses correspond to the segments of the corresponding pointers in the real mode area. The selector values are derived from a segment descriptor table.
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公开(公告)号：DE3786660T2
公开(公告)日：1994-02-17
申请号：DE3786660
申请日：1987-12-15
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , DAYAN RICHARD ALAN , DORIA DAVID JOSEPH , KINNEAR SCOTT GERARD , KRANTZ JEFFREY ISSAC , LIVERMAN ROBERT BRITTON , SOTOMAYOR GUY GIL , WILLIAMS DONALD DORSEY , VAISKAUCKAS GARY ANTHONY
Abstract: A computer system and method for operating a computer system capable of running in mutually incompatible real and protected addressing modes, in which programs written for one mode can be run in the other mode without modification. The BIOS assembles two different common data areas for the two modes, each inclusive of device block pointers, function transfer table pointers, data pointers, and function pointers. The common data area for the real mode is assembled first. To assemble the pointers for the protected mode common data area, the offset values from the real mode area are copied directly, and then selector values are inserted whose physical addresses correspond to the segments of the corresponding pointers in the real mode area. The selector values are derived from a segment descriptor table.
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公开(公告)号：ES2042531T3
公开(公告)日：1993-12-16
申请号：ES87118538
申请日：1987-12-15
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , DAYAN RICHARD ALAN , DORIA DAVID JOSEPH , KINNEAR SCOTT GERARD , KRANTZ JEFFREY ISSAC , LIVERMAN ROBERT BRITTON , SOTOMAYOR GUY GIL , WILLIAMS DONALD DORSEY , VAISKAUCKAS GARY ANTHONY
Abstract: A computer system and method for operating a computer system capable of running in mutually incompatible real and protected addressing modes, in which programs written for one mode can be run in the other mode without modification. The BIOS assembles two different common data areas for the two modes, each inclusive of device block pointers, function transfer table pointers, data pointers, and function pointers. The common data area for the real mode is assembled first. To assemble the pointers for the protected mode common data area, the offset values from the real mode area are copied directly, and then selector values are inserted whose physical addresses correspond to the segments of the corresponding pointers in the real mode area. The selector values are derived from a segment descriptor table.
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公开(公告)号：GB2202657B
公开(公告)日：1991-09-18
申请号：GB8728922
申请日：1987-12-10
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , DAYAN RICHARD ALAN , DORIA DAVID JOSEPH , KINNEAR SCOTT GERARD , KRANTZ JEFFREY ISSAC , LIVERMAN ROBERT BRITTON , SOTOMAYOR GUY GIL , WILLIAMS DONALD DORSEY , VAISKAUCKAS GARY ANTHONY
Abstract: A computer system and method for operating a computer system capable of running in mutually incompatible real and protected addressing modes, in which programs written for one mode can be run in the other mode without modification. The BIOS assembles two different common data areas for the two modes, each inclusive of device block pointers, function transfer table pointers, data pointers, and function pointers. The common data area for the real mode is assembled first. To assemble the pointers for the protected mode common data area, the offset values from the real mode area are copied directly, and then selector values are inserted whose physical addresses correspond to the segments of the corresponding pointers in the real mode area. The selector values are derived from a segment descriptor table.
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