Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1995-06-07
1997-10-21
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361119, 361115, H02H 900
Patent
active
056802889
ABSTRACT:
A circuit senses an insertion of an adapter card into a connector coupled to a processor by an MCA bus and signals control logic, which forces all other adapter cards coupled to the MCA bus off of the bus with a preempt signal, driving the bus into an arbitration mode. This may be done while the system is powered. An analog switch divides the preempt signal into one that goes to the adapter cards and a second one that is sent to the processor so that it can perform memory refresh cycles.
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IBM Technical Disclosure Bulletin, "Method for Card Hot Plug Detection and Control" vol. 35, n5, Oct. 1992, pp. 391-394.
Carey John J.
Parnell Fred
Williams Jeffrey Buchanan
Cockburn Joscelyn G.
Gaffin Jeffrey A.
International Business Machines - Corporation
Jackson Stephen
Keohane Stephen T.
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