Method and apparatus for controlled removal and insertion of circuit modules

摘要: An electronic circuit board electrically connected to other circuits of a data processing system by means bus, may be removed and re-inserted in the without necessity disabling bus. A latch actuated switch provides control signal anticipation removal. The activates finite state machine which seizes bus after completion any current communications stops generation clock pulses normally required communications. When contact is physically broken between its corresponding connector, restores relinquishes inserted an open connector sensed causes seized temporarily inhibited. fully inserted,