中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

74 records (took 0.019 seconds)

    DECREASING THE MEMORY REQUIREMENTS FOR BIOS IN A PERSONAL COMPUTER SYSTEM
    22.
    发明专利
    DECREASING THE MEMORY REQUIREMENTS FOR BIOS IN A PERSONAL COMPUTER SYSTEM 未知

    公开(公告)号：NZ234711A

    公开(公告)日：1993-04-28

    申请号：NZ23471190

    申请日：1990-07-30

    Applicant: IBM

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

    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.

    24.
    发明专利
    未知

    公开(公告)号：DE4026912A1

    公开(公告)日：1991-02-28

    申请号：DE4026912

    申请日：1990-08-25

    Applicant: IBM

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

    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.

    25.
    发明专利
    未知

    公开(公告)号：IT1217358B

    公开(公告)日：1990-03-22

    申请号：IT1994588

    申请日：1988-03-25

    Applicant: IBM

    Inventor： BEALKOWSKI RICHARD ,  DAYAN RICHARD ALAN ,  DORIA DAVID JOSEPH ,  KINNEAR SCOTT GERARD ,  KRANTZ JEFFREY I ,  LIVERMAN ROBERT B ,  SOTOMAYOR GUY G ,  WILLIAMS DONALD D ,  VAISKAUCKAS GARY ANTHONY

    IPC: G06F9/06 ,  G06F12/02 ,  G06F12/08 ,  G06F12/10 ,  G06F12/14 ,  G06F

    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.

    26.
    发明专利
    未知

    公开(公告)号：MX159255A

    公开(公告)日：1989-05-09

    申请号：MX20598685

    申请日：1985-07-15

    Applicant: IBM

    Inventor： AGOGLIA ROBERT JOHN ,  DAYAN RICHARD ALAN ,  SMITH BRUCE ALAN

    IPC: G06F3/06 ,  G11B19/00 ,  G05B23/00 ,  H03K21/00

    Abstract: Diskette drive determination in which a read/write head in a diskette drive is instructed to move to a track that is inaccessible on one type of diskette drive. The head is then stepped back toward a track associated with a sensor indicating the positioning of the head over the track. The number of steps required to activate the sensor determines which type of drive is being used.

    Personal computer system with security features and method
    29.
    发明专利
    Personal computer system with security features and method 未知

    公开(公告)号：SG43708A1

    公开(公告)日：1997-11-14

    申请号：SG1996000010

    申请日：1993-02-16

    Applicant: IBM

    Inventor： BLACKLEDGE JOHN WILEY JR ,  CLARKE GRANT LEACH JR ,  DAYAN RICHARD ALAN ,  LE DO KIMTHANH ,  MCCOURT PATRICK EDWARD ,  MITTELSTEDT MATTHEW TODD ,  MOELLER DENNIS LEE ,  NEWMAN PALMER EUGENE ,  RANDALL DENNIS LEE ,  YODER JOANNA BERGER

    IPC: G06F9/06 ,  G06F12/14 ,  G06F11/00 ,  G06F21/00 ,  G06F21/06 ,  G06F21/22 ,  G06F21/24 ,  G06F1/00

    Abstract: This invention relates to personal computer systems and, more particularly, to such a system having security features enabling control over access to data retained in such a system. In particular, a personal computer system in accordance with this invention has a normally closed enclosure, an erasable memory element for selective activation to active and inactive states and for receiving and storing a privileged access password when in the active state, an option switch operatively connected with the erasable memory element for setting the erasable memory element to the active and inactive states, a tamper detection switch operatively connected with the erasable memory element for detecting opening of the enclosure and for clearing any stored privileged access password from the erasable memory element in response to any switching of the tamper switch, and a system processor operatively connected with the erasable memory element for controlling access to at least certain levels of data stored within the system by distinguishing between the active and inactive states of the memory element and between entry and non-entry of any stored privileged access password. In the presently preferred form of the invention, two non-volatile erasable memory elements are provided, one an EEPROM and the other battery backed CMOS RAM.

    30.
    发明专利
    未知

    公开(公告)号：DE69027167D1

    公开(公告)日：1996-07-04

    申请号：DE69027167

    申请日：1990-07-04

    Applicant: IBM

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

    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).

Patent Agency Ranking