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公开(公告)号：CA2020522C
公开(公告)日：1993-11-09
申请号：CA2020522
申请日：1990-07-05
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , BLACKLEDGE JOHN W JR , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , PALKA MATTHEW S JR , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN M
Abstract: An apparatus and method for loading BIOS from a diskette drive into a personal computer system normally connected to a hardfile, such as a fixed disk. The personal computer system further includes a system processor, a random access main memory, a read only memory 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 includes a first portion of BIOS and data representing the type of system processor and system planar I/O configuration. The first portion of BIOS initializes the system 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. For either mode, 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 transfers control to the executable code segment which 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, system planar, and planar I/O configuration. If the master boot record is compatible with the system hardware, the executable code segment confirms that the system configuration has not changed and loads in the remaining BIOS portion from the diskette drive into random access memory. The executable code segment then verifies the authenticity of the remaining BIOS portion and vectors the system processor to begin executing the BIOS now in random access memory. BIOS, executing in random access memory, then boots up the operating system to begin operation of the personal computer system.
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公开(公告)号：IN176801B
公开(公告)日：1996-09-14
申请号：IN484MA1990
申请日：1990-07-24
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , LEDGE JOHN W B , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , PALKA MATTHEW S , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN MARSHALL
IPC: G06F15/40
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公开(公告)号：CA2020523C
公开(公告)日：1993-11-09
申请号：CA2020523
申请日：1990-07-05
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , BLACKLEDGE JOHN W JR , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , PALKA MATTHEW S JR , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN M
Abstract: An apparatus and method for loading BIOS stored on a direct access storage device into a personal computer system. The personal computer system comprises a system processor. a system planar, a random access main memory, a read only memory, and at least one direct access storage device. The read only memory includes a first portion of BIOS and data representing the type of system processor and system planar I/O configuration. The first portion of BIOS initializes the system and the direct access storage device to read in a master boot record into the system from the direct access storage device. 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, system planar, and planar I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor 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 direct access storage device into random access memory. The executable code segment then verifies the authenticity of the remaining BIOS portion and vectors the system processor to begin executing the BIOS now in random access memory. BIOS executing in random access memory then boots up the operating system to begin operation of the personal computer system.
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公开(公告)号：CA2063880A1
公开(公告)日：1992-09-27
申请号：CA2063880
申请日：1992-03-24
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , BLACKLEDGE JOHN W JR , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , NEER JAY H , PALKA MATTHEW S JR , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN M
Abstract: BC9-90-061 BIOS LOAD FOR A PERSONAL COMPUTER SYSTEM HAVING A REMOVABLE PROCESSOR CARD An apparatus and method for loading BIOS stored on a direct access storage device into a personal computer system. The personal computer system comprises a processor card including a system processor and a read only memory; a planar board including a random access memory; and at least one direct access storage device. The processor card is removably mounted on the planar board. The read only memory includes a first portion of BIOS and data representing the type of system processor and system planar I/O configuration. The first portion of BIOS initializes the system and the direct access storage device to read in a master boot record into the system from the direct access storage device. 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, system planar, and planar I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor 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 direct access storage device into random access memory. The executable code segment then verifies the authenticity of the remaining BIOS portion and vectors the system processor to begin executing the BIOS now in random access memory. BIOS executing in random access memory then boots up the operating system to begin operation of the personal computer system.
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公开(公告)号：BR9004198A
公开(公告)日：1991-09-03
申请号：BR9004198
申请日：1990-08-24
Applicant: IBM
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Patent Agency Ranking
公开(公告)号：CA2020522A1
公开(公告)日：1991-02-26
申请号：CA2020522
申请日：1990-07-05
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , BLACKLEDGE JOHN W JR , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , PALKA MATTHEW S JR , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN M
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).
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7.发明专利
公开(公告)号：CA2020521C
公开(公告)日：1993-11-09
申请号：CA2020521
申请日：1990-07-05
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , BLACKLEDGE JOHN W JR , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , PALKA MATTHEW S JR , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN M
Abstract: An apparatus and method for decreasing the memory requirements of BIOS in a personal computer system includes storing a first portion of BIOS in memory and a second portion on a direct storage access device. The personal computer system comprises a system processor, a random access main memory, a read only memory, and at least one direct access storage device. The read only memory includes the first portion of BIOS and data representing the type of system processor and system planar I/O configuration. The first portion of BIOS only includes routines for initializing the system and the direct access storage device to read in a master boot record into the system from the direct access storage device. 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, system planar, and planar I/O configuration. If the master boot record is compatible with the system hardware, the first BIOS portion vectors the system processor 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 direct access storage device into random access memory superseding the first BIOS portion. The executable code segment then verifies the authenticity of the remaining BIOS portion and vectors the system processor to begin executing the remaining BIOS now in random access memory. The remaining BIOS in main memory includes reusable routines for operating the personal computer system in a normal manner.
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公开(公告)号：PT95081A
公开(公告)日：1992-05-29
申请号：PT9508190
申请日：1990-08-23
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , BLACKLEDGE JOHN W JR , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , PALKA MATTHEW S JR , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN M
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).
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9.发明专利
公开(公告)号：CA2020521A1
公开(公告)日：1991-02-26
申请号：CA2020521
申请日：1990-07-05
Applicant: IBM
Inventor： BEALKOWSKI RICHARD , BLACKLEDGE JOHN W JR , CRONK DOYLE S , DAYAN RICHARD A , KINNEAR SCOTT G , KOVACH GEORGE D , PALKA MATTHEW S JR , SACHSENMAIER ROBERT , ZYVOLOSKI KEVIN M
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.
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公开(公告)号：BR9201032A
公开(公告)日：1992-11-24
申请号：BR9201032
申请日：1992-03-25
Applicant: IBM
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