Patent ID: 6374318
Filing Date: 2002-04-16
Classification: G06F

Abstract:
A computer system comprising:a system processor; a computer bus, the system processor operably coupled to the computer bus; and a filter circuit coupled to the computer bus, the filter circuit controlling bus accesses to a group of at least two devices operably coupled to the computer bus, the filter circuit operable in a filter mode and a non filter mode, wherein: in the non filter mode, the filter circuit allows bus accesses from the computer bus to pass to the group; and in the filter mode, the filter circuit (i) initially blocks bus accesses from the computer bus from passing to the group, in response to a bus signal, determines that a bus access is an allowable bus access, (ii) signals a device that initiated the allowable bus access to reinitiate the allowable bus access, and (iii) allows the reinitiated allowable bus access to pass to the group.