Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Patent
1999-02-02
2000-03-21
Sheikh, Ayaz R.
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
710 9, G06F 1300
Patent
active
060413778
ABSTRACT:
A method for supporting multiple distributed interrupt controllers, designated as bus agents, in a symmetric multiprocessing system, which method includes the steps of assigning a unique identification number to each bus agent, receiving bus requests from the bus agents over four data lines in groups of four, and granting bus ownership to a selected one of the requesting bus agents. Similarly, a computer system that supports multiple distributed interrupt controllers, designated as bus agents, in a symmetric multiprocessing system, which computer system includes structure for assigning a unique identification number to each bus agent, four data lines for receiving bus requests from the bus agents in groups of four, and structure for granting bus ownership to a selected one of the requesting bus agents.
REFERENCES:
patent: 5283904 (1994-02-01), Carson et al.
Russo, A.P.: "The Alphasver 2100 I/O Subsystem", Digital Technical Journal, vol. 6, No. 3, Jan. 1, 1994, pp. 20-28, XP000575573, p. 25, Right-Hand col., Line 5-p. 26, Left-Hand col., Line 46.
Heinrich David F.
Mayer Dale J.
Olarig Sompong Paul
Whiteman William F.
Compaq Computer Corporation
Sheikh Ayaz R.
Wiley David A.
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