System for blocking access to a computer device using a glue log

Details System for blocking access to a computer device using a glue log System for blocking access to a computer device using a glue log

1997-05-21

1999-08-10

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

710 36, G06F 900

Patent

active

059352230

ABSTRACT:
A system and method that blocks access to a computer device, for example a direct memory access controllerdevice (50), coupled to a PCI bus (30). In a computer system (10) with a PCI bus (30), the present invention couples a glue logic circuit (70) to the PCI bus (30) to block access to the target computer device. The glue logic circuit (70) can also allow access to a requested computer device. In another aspect, the present invention couples a control module (170) to the PCI bus (30) to block access to the target computer device.

REFERENCES:
patent: 5499108 (1996-03-01), Cotte et al.
patent: 5522050 (1996-05-01), Amini et al.
patent: 5696993 (1997-12-01), Gavish
patent: 5701409 (1997-12-01), Gates
patent: 5790831 (1998-08-01), Lin et al.

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