Patent ID: 6173383
Filing Date: 2001-01-09
Classification: G06F

Abstract:
Interface bridge between a system bus and at least one local bus subordinate to the system bus, comprising:a plurality of programmable decoders, each of which defines a corresponding range within a range directly addressable by said local bus, each of the corresponding ranges not overlapping the corresponding range defined by each of the other decoders, an attribute of each of said corresponding ranges being a set of direct local bus addresses or addresses to be translated, for transfer thereof to said system bus, and whether or not a local bus address belongs to said corresponding range;translating means, controlled by said plurality of decoders, for translating and transferring an address of said local bus to said system bus, as a translated address, if said local bus address is inside a corresponding range defined by at least one of said decoders with a range attribute of an address to be translated; anddirect addressing means, controlled by said plurality of decoders, for storing said address of said local bus in a local memory space that is compatible with said local bus and for moving said address from said local memory space to system memory space that is compatible with said system bus, if said local bus address is not inside a corresponding range defined by at least one of said decoders with a range attribute of an address to be translated.