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

IPC: G06F1/16 ,  G06F9/445 ,  G06F13/00

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.

公开(公告)号：CA1300746C

公开(公告)日：1992-05-12

申请号：CA481216

申请日：1985-05-09

Applicant: IBM

Inventor： BERENS ROBERT E ,  BRADLEY DAVID J ,  BUCKLEY LINDA K ,  DAYAN RICHARD A ,  SMITH BRUCE A

IPC: G06F3/06 ,  G06F13/38 ,  G11B19/12 ,  G11B20/12 ,  G11B33/10 ,  G11B23/40 ,  G11B19/02

Abstract: IBM Docket No. BC 9-84-012 DISKETTE DRIVE AND MEDIA TYPE DETERMINATION Diskette media and drive determination in which a diskette controller attempts to read the diskette according to a variety of formats having, forinstance, different data transfer rates. A successful read is registered by the controller and that format is thereafter identified with the diskette drive and the diskette media inserted in the drive. BC9-84-012

公开(公告)号：BR9103006A

公开(公告)日：1992-02-11

申请号：BR9103006

申请日：1991-07-15

Applicant: IBM

Inventor： ARNOLD LISA R ,  BEALKOWSKI RICAHRD ,  BLACKLEDGE JOHN W ,  CRONK DOYLE S ,  DAYAN RICHARD A

IPC: G06F3/06 ,  G06F9/445 ,  G06F11/08 ,  G06F11/22 ,  G06F13/10 ,  G06F15/40

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：BR9004198A

公开(公告)日：1991-09-03

申请号：BR9004198

申请日：1990-08-24

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

IPC: G06F3/00 ,  G11B5/12

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

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).