Patent ID: 6021455
Filing Date: 2000-02-01
Classification: G06F

Abstract:
An information processing system comprising:a first bus;signal transmission means;a second bus operating under a communication protocol different from that of said first bus;a plurality of modules connected to one of said first and second buses;a predetermined one of said plurality of modules being a bus conversion means for performing at least protocol conversion of information between said first and second buses;a bus arbiter, in said bus conversion means, for arbitrating a bus access request issued from a module working as a bus master among said plurality of modules; anda buffer, in said bus conversion means, for storing up to a predetermined amount of data specifying an access operation from said bus master when the access destination of said access operation is said bus conversion means,wherein at least two of said plurality of modules connected to said first bus are operating as bus masters having a function for outputting access destination information, through said signal transmission means, for identifying said bus conversion means as an object of said access operation; andsaid bus arbiter decides whether or not to give bus access to one of said bus masters issuing a bus access request by referring to said access destination information and the amount of data stored in said buffer.