Patent ID: 6304932
Filing Date: 2001-10-16
Classification: G06F

Abstract:
A data processing system comprising:a bus having a plurality of signal conductors for transmitting information between physically separated locations;a plurality of modules coupled to said bus, each module comprising means for transmitting and receiving information specifying a transaction to be carried out by another module or by said module, respectively, each module further comprising a queue for storing information specifying said transaction received by said module for processing by said module;a bus controller, separate from said modules for generating a signal on said bus indicative of the types of said transactions that can be sent on said bus by said modules;means, separate from said modules, for determining that a queue in one of said modules has less than a predetermined amount of free space and for causing said bus controller to limit transactions that can be sent on said bus so as to prevent transactions requiring space in said queue from being issued, said determining means making said determination without reference to any signal from that module indicating the amount of free space in said queue.