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

Inventor： BEALKOWSKI RICHARD ,  DAYAN RICHARD ALAN ,  DORIA DAVID JOSEPH ,  KINNEAR SCOTT GERARD ,  LIVERMAN ROBERT BRITTON ,  KRANTZ JEFFREY IASAC ,  SOTOMAYOR GUY GIL ,  WILLIAMS DONALD DORSEY ,  VAISKAUCKAS GARY ANTHONY

IPC: G06F12/00 ,  G06F15/00

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

IPC: G06F9/06 ,  G06F12/02 ,  G06F12/08 ,  G06F12/10 ,  G06F12/14

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.

公开(公告)号：AU7926791A

公开(公告)日：1992-01-30

申请号：AU7926791

申请日：1991-06-21

Applicant: IBM

Inventor： ARNOLD LISA RUOTOLO ,  BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY JR ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN ,  GEISLER DOUGLAS RICHARD ,  MITTELSTEDT MATTHEW TODD ,  PALKA MATTHEW STEPHEN JR ,  PAUL JOHN DAVID ,  SACHSENMAIER ROBERT ,  SMELTZER KENNETH DONALD ,  WOYTOVECH PETER ANDREW ,  ZYVOLOSKI KEVIN MARSHALL

IPC: G06F3/06 ,  G06F9/445 ,  G06F11/08 ,  G06F11/22 ,  G06F13/10 ,  G06F12/14 ,  G06F12/16

Abstract: A personal computer system according to the present invention comprises a system processor, a random access memory, a read only memory, and at least one direct access storage device. A direct access storage device controller coupled between the system processor and direct access storage device includes a protection mechanism for protecting a region of the storage device. The protected region of the storage device includes a master boot record, a BIOS image and a system reference diskette image. The BIOS image includes a section known as Power on Self Test (POST). POST is used to test and initialise a system. Upon detecting any configuration error, system utilities from the system reference diskette image, such as set configuration programs, diagnostic programs and utility programs can be automatically activated from the direct access storage device.

公开(公告)号：AU5999290A

公开(公告)日：1991-02-28

申请号：AU5999290

申请日：1990-07-30

Applicant: IBM

Inventor： BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY JR ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN ,  KINNEAR SCOTT GERARD ,  KOVACH GEORGE D ,  PALKA MATTHEW STEPHEN JR ,  SACHSENMAIER ROBERT ,  ZYVOLOSKI KEVIN MARSHALL

IPC: G06F13/10 ,  G06F9/445 ,  G06F12/00

Abstract: An apparatus and method for decreasing the memory requirements of BIOS in a personal computer system (10) includes storing a first portion of BIOS in memory and a second portion on a direct storage access device. The personal computer system (10) comprises a system processor (26), a random access main memory, a read only memory (36), and at least one direct access storage device (62,66). The read only memory (36) includes the first portion of BIOS and data representing the type of system processor (26) and system planar (24) I/O configuration. The first portion of BIOS only includes routines for initializing the system (10) and the direct access storage device (62,66) to read in a master boot record into the system (10) from the direct access storage device (62,66). The master boot record includes a data segment (122-138) and an executable code segment (120). The data segment (122-138) includes data representing system hardware and a system configuration which is supported by the master boot record. The first BIOS portion confirms the master boot record is compatible with the system hardware by verifying that the data from the data segment (122-138) of the master boot record agrees with the system processor (26), system planar (24), and planar (24) I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor (26) to execute the executable code segment (120) of the master boot record. The executable code segment (120) confirms that the system conf iguration has not changed and loads in the remaining BIOS portion from the direct access storage device (62,66) into random access memory (32) superseding the first BIOS portion. The executable code segment (120) then verifies the authenticity of the remaining BIOS portion and vectors the system processor (26) to begin executing the remaining BIOS now in random access memory (32). The remaining BIOS in main memory includes reusable routines for operating the system (10) in a normal manner.

公开(公告)号：AT170302T

公开(公告)日：1998-09-15

申请号：AT91305020

申请日：1991-06-03

Applicant: IBM

Inventor： ARNOLD LISA RUOTOLO ,  BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY JR ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN ,  GEISLER DOUGLAS RICHARD ,  MITTELSTEDT MATTHEW TODD ,  PALKA MATTHEW STEPHEN JR ,  PAUL JOHN DAVID ,  SACHSENMAIER ROBERT ,  SMELTZER KENNETH DONALD ,  WOYTOVECH PETER ANDREW ,  ZYVOLOSKI KEVIN MARSHALL

IPC: G06F3/06 ,  G06F9/445 ,  G06F11/08 ,  G06F11/22 ,  G06F13/10

Abstract: A personal computer system according to the present invention comprises a system processor, a random access memory, a read only memory, and at least one direct access storage device. A direct access storage device controller coupled between the system processor and direct access storage device includes a protection mechanism for protecting a region of the storage device. The protected region of the storage device includes a master boot record, a BIOS image and a system reference diskette image. The BIOS image includes a section known as Power on Self Test (POST). POST is used to test and initialise a system. Upon detecting any configuration error, system utilities from the system reference diskette image, such as set configuration programs, diagnostic programs and utility programs can be automatically activated from the direct access storage device.

公开(公告)号：SG44401A1

公开(公告)日：1997-12-19

申请号：SG1996000186

申请日：1990-07-04

Applicant: IBM

Inventor： BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY JR ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN ,  KINNEAR SCOTT GERARD ,  KOVACH GEORGE D ,  PALKA MATTHEW STEPHEN JR ,  SACHSENMAIER ROBERT ,  ZYVOLOSKI KEVIN MARSHALL ,  DIXON JERRY DUANE ,  WACHTEL ANDREW BOYCE IRVING

IPC: G06F9/06 ,  G06F9/445

Abstract: An apparatus and method for loading BIOS stored on a direct access storage device (62,66) into a personal computer system (10). The personal computer system (10) comprises a system processor (26), a system planar (24), a random access main memory, a read only memory (36), and at least one direct access storage device (62,66). The read only memory (36) includes a first portion of BIOS and data representing the type of system processor (26) and system planar (24) I/O configuration. The first portion of BIOS initializes the system (10) and the direct access storage device (62,66) to read in a master boot record into the system (10) from the direct access storage device (62,66). The master boot record includes a data segment (122-138) and an executable code segment (120). The data segment (122-138) includes data representing system hardware and a system (10) configuration which is supported by the master boot record. The first BIOS portion confirms the master boot record is compatible with the system hardware by verifying that the data from the data segment (122-138) of the master boot record agrees with the system processor (26), system planar (24), and planar I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor (26) to execute the executable code segment (120) of the master boot record. The executable code segment (120) confirms that the system configuration has not changed and loads in the remaining BIOS portion from the direct access storage device (62,66) into random access memory (32). The executable code segment (120) then verifies the authenticity of the remaining BIOS portion and vectors the system processor (26) to begin executing the BIOS now in random access memory (32). BIOS executing in random access memory (32) then boots up the operating system to begin operation of the personal computer system (10).

公开(公告)号：HK203296A

公开(公告)日：1996-11-15

申请号：HK203296

申请日：1996-11-07

Applicant: IBM

Inventor： BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY JR ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN

IPC: G06F9/445 ,  G06F13/10

Abstract: An apparatus and method for decreasing the memory requirements of BIOS in a personal computer system (10) includes storing a first portion of BIOS in memory and a second portion on a direct storage access device. The personal computer system (10) comprises a system processor (26), a random access main memory, a read only memory (36), and at least one direct access storage device (62,66). The read only memory (36) includes the first portion of BIOS and data representing the type of system processor (26) and system planar (24) I/O configuration. The first portion of BIOS only includes routines for initializing the system (10) and the direct access storage device (62,66) to read in a master boot record into the system (10) from the direct access storage device (62,66). The master boot record includes a data segment (122-138) and an executable code segment (120). The data segment (122-138) includes data representing system hardware and a system configuration which is supported by the master boot record. The first BIOS portion confirms the master boot record is compatible with the system hardware by verifying that the data from the data segment (122-138) of the master boot record agrees with the system processor (26), system planar (24), and planar (24) I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor (26) to execute the executable code segment (120) of the master boot record. The executable code segment (120) confirms that the system conf iguration has not changed and loads in the remaining BIOS portion from the direct access storage device (62,66) into random access memory (32) superseding the first BIOS portion. The executable code segment (120) then verifies the authenticity of the remaining BIOS portion and vectors the system processor (26) to begin executing the remaining BIOS now in random access memory (32). The remaining BIOS in main memory includes reusable routines for operating the system (10) in a normal manner.

公开(公告)号：HK203196A

公开(公告)日：1996-11-15

申请号：HK203196

申请日：1996-11-07

Applicant: IBM

Inventor： BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY JR ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN

IPC: G06F13/10 ,  G06F9/445 ,  G06F12/14 ,  G06F21/22

Abstract: An apparatus and method for protecting BIOS stored on a direct access storage device (62) into a personal computer system (10). The personal computer system (JO) comprises a system processor (26), a system planar (24), a random access main memory (32), a read only memory (36), a protection means and at least one direct access storage device (62). The read only memory (36) includes a first portion of BIOS and data representing the type of system processor (26) and system planar (24) I/O configuration. The first portion of BIOS initializes the system (10) and the direct access storage device (62), and resets the protection means in order to read in a master boot record into the random access memory (32) from a protectable partition on the direct access storage device (62). The master boot record includes a data segment and an executable code segment. The data segment includes data representing system hardware and a system configuration which is supported by the master boot record. The first BIOS portion confirms the master boot record is compatible with the system hardware by verifying that the data from the data segment of the master boot record agrees with the system processor (26), system planar (24), and planar (24) I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor (26) to execute the executable code segment of the master boot record. The executable code segment confirms that the system configuration has not changed and loads in the remaining BIOS portion from the same protectable partition on the direct access storage device (62) into random access memory (32). The executable code segment then verifies the authenticity of the remaining BIOS portion and vectors the system processor (26) to begin executing the BIOS now in random access memory. BIOS, executing in random access memory (32), then activates the protection means to prevent further access to the protectable partition. BIOS boots up the operating system to begin operation of the personal computer system.

公开(公告)号：DE69027165D1

公开(公告)日：1996-07-04

申请号：DE69027165

申请日：1990-07-04

Applicant: IBM

Inventor： BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN

IPC: G06F13/10 ,  G06F9/445 ,  G06F12/14 ,  G06F21/22

Abstract: An apparatus and method for protecting BIOS stored on a direct access storage device (62) into a personal computer system (10). The personal computer system (JO) comprises a system processor (26), a system planar (24), a random access main memory (32), a read only memory (36), a protection means and at least one direct access storage device (62). The read only memory (36) includes a first portion of BIOS and data representing the type of system processor (26) and system planar (24) I/O configuration. The first portion of BIOS initializes the system (10) and the direct access storage device (62), and resets the protection means in order to read in a master boot record into the random access memory (32) from a protectable partition on the direct access storage device (62). The master boot record includes a data segment and an executable code segment. The data segment includes data representing system hardware and a system configuration which is supported by the master boot record. The first BIOS portion confirms the master boot record is compatible with the system hardware by verifying that the data from the data segment of the master boot record agrees with the system processor (26), system planar (24), and planar (24) I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor (26) to execute the executable code segment of the master boot record. The executable code segment confirms that the system configuration has not changed and loads in the remaining BIOS portion from the same protectable partition on the direct access storage device (62) into random access memory (32). The executable code segment then verifies the authenticity of the remaining BIOS portion and vectors the system processor (26) to begin executing the BIOS now in random access memory. BIOS, executing in random access memory (32), then activates the protection means to prevent further access to the protectable partition. BIOS boots up the operating system to begin operation of the personal computer system.

公开(公告)号：AT138749T

公开(公告)日：1996-06-15

申请号：AT90307295

申请日：1990-07-04

Applicant: IBM

Inventor： BEALKOWSKI RICHARD ,  BLACKLEDGE JOHN WILEY JR ,  CRONK DOYLE STANFILL ,  DAYAN RICHARD ALAN ,  KINNEAR SCOTT GERALD ,  KOVACH GEORGE D ,  PALKA MATTHEW STEPHEN JR

IPC: G06F13/10 ,  G06F9/445

Abstract: An apparatus and method for loading BIOS from a diskette drive (66) into a personal computer system (10) normally connected to a fixed disk drive (62). The personal computer system (10) further includes a system processor (26), a random access main memory, a read only memory (36) and a switching means. The switching means generates a signal to indicate a mode for whether BIOS loads from either diskette or disk. In a priority mode, BIOS loads immediately from diskette. In a recovery mode, BIOS loads from diskette after testing the disk subsystem. The read only memory (36) includes a first portion of BIOS and data representing the type of system processor (26) and system planar (24) I/O configuration. The first portion of BIOS initializes the system (10) and queries the switching means. If the fixed disk is not available or the master boot record on the disk is invalid, the first portion of BIOS reads in a master boot record from the diskette drive (66). For either mode, the master boot record includes a data segment (122-138) and an executable code segment (120). The data segment (122-138) includes data representing system hardware and a system configuration which is supported by the master boot record. The first BIOS portion transfers control to the executable code segment (120) which confirms the master boot record is compatible with the system hardware by verifying that the data from the data segment (122-138) of the master boot record agrees with the system processor (26), system planar (24), and planar I/O configuration. If the master boot record is compatible with the system hardware, the executable code segment (120) confirms that the system configuration has not changed and loads in the remaining BIOS portion from the diskette drive (66) into random access memory (32). The executable code segment (120) then verifies the authenticity of the remaining BIOS portion and vectors the system processor (26) to begin executing the BIOS now in random access memory (32). BIOS, executing in random access memory (32), then boots up the operating system to begin operation of the personal computer system (10).