SYSTEM FOR CORRECTING SYSTEM MANAGEMENT MODE ADDRESS FOR COMPUTER, AND COMPUTER SYSTEM

摘要

PURPOSE: To supply a corrected address value to an address bus when a computer is in a system management mode. ;CONSTITUTION: When a computer is in a system management mode, a microprocessor 152 asserts a system management interrupting operation (SMIACT*) signal. This signal is supplied to a circuit 162 which receives a FORCE A20 signal. While an SMIACT signal is in an inoperative state, the control circuit 162 supplies the true FORCE A20 signal to the computer system. When SMI is generated, the SMICACT signal is turned into an operative state, and the FORCE A20 signal is disabled. As a result, an address generated by a microprocessor 152 is asserted to an address bus.;COPYRIGHT: (C)1995,JPO