×

Attachment or integration of a BIOS device into a computer system using the system memory data bus

  • US 6,009,522 A
  • Filed: 09/30/1997
  • Issued: 12/28/1999
  • Est. Priority Date: 09/30/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A computer comprising:

  • a central processing unit;

    a system memory bus that includes a system memory data bus;

    a BIOS device that is connected to the system memory data bus; and

    core logic connecting the central processing unit to the system memory bus comprising;

    a state machine for initiating system memory bus cycles in a normal mode; and

    logic for bypassing the state machine when a BIOS access is initiated;

    wherein the core logic is configured such that if a BIOS access is initiated;

    the core logic becomes master of the system memory bus;

    a system memory bus cycle in normal mode is not initiated; and

    the core logic places the address of the BIOS device on the system memory bus.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×