Secondary I/O bus with expanded slot capacity and hot plugging c

Details Secondary I/O bus with expanded slot capacity and hot plugging c Secondary I/O bus with expanded slot capacity and hot plugging c

1996-05-24

1999-02-23

An, Meng-Ai T.

395286, 395281, G06F 1340

Patent

active

058753109

ABSTRACT:
A computer system is provided which supports an increase in the number of pluggable cards on the secondary I/O bus by using driver/receiver modules and direction control logic in place of more complex and more expensive bus to bus bridges. The number of pluggable cards on the I/O bus in a computer system is limited by the electrical loading of each card and the frequency of operations on the bus. Reducing the bus frequency provides more signal propagation time. The added signal propagation time supports the extension of the bus by driver/receiver modules and logic which controls the direction the driver/receiver modules drive the bus signals. Further, the driver/receiver modules support changing the hardware configuration of the system by adding or removing an I/O card without the need to cease data processing activity for the entire computer.

REFERENCES:
patent: 5509124 (1996-04-01), Bourke et al.
patent: 5568619 (1996-10-01), Blackledge et al.
patent: 5581709 (1996-12-01), Ito et al.
patent: 5586281 (1996-12-01), Parrett
patent: 5594873 (1997-01-01), Garrett
patent: 5664124 (1997-09-01), Katz et al.

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