Method for determining steerable interrupt request lines used by

Details Method for determining steerable interrupt request lines used by Method for determining steerable interrupt request lines used by

1995-05-08

1997-04-22

Sheikh, Ayaz R.

395741, G06F 1300

Patent

active

056236743

ABSTRACT:
A system for determining the connections between a PCMCIA controller and a programmable interrupt controller (PIC) by simulating an interrupt request from the PCMCIA controller and then evaluating the values contained in the interrupt request register of the PIC. An interrupt request association record is stored in response to receiving the simulated interrupt request at one of the interrupt request register inputs of the programmable interrupt controller. The interrupt request association record assigns the selected interrupt request line to the interrupt request register input that received the interrupt request signal. An interrupt request output from the PCMCIA controller is considered to be connected to a particular interrupt request register input of the PIC if a value in the interrupt request register of the PIC transitions from a logic low state to a logic high state, and then returns to the logic low state.

REFERENCES:
patent: 4747040 (1988-05-01), Blanset et al.
patent: 5436621 (1995-07-01), Macko et al.
patent: 5436856 (1995-07-01), Sauvage
patent: 5475846 (1995-12-01), Moore

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