Multiple independent I/O functions on a PCMCIA card share a sing

Details Multiple independent I/O functions on a PCMCIA card share a sing Multiple independent I/O functions on a PCMCIA card share a sing

1996-01-29

1998-09-08

Asta, Frank J.

395868, G06F 1300

Patent

active

058059296

ABSTRACT:
A PCMCIA card comprises a plurality of I/O functions. Each has an interrupt signal, but the card has only one interrupt request (IREQ) line. The card is provided with an interrupt status register (ISR) to receive the interrupt signals from each of the I/O functions. This ISR allows software to determine the function that signaled the interrupt. The card is also provided with interrupt control logic (ICL) that is responsive to the interrupt status of ISR. The ICL sends an IREQ signal to a host system.

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