Virtual input/output processor utilizing an interrupt handler

Details Virtual input/output processor utilizing an interrupt handler Virtual input/output processor utilizing an interrupt handler

1997-05-09

1998-03-10

Ray, Gopal C.

395733, 395821, 395868, G06F 946, G06F 1324

Patent

active

057272190

ABSTRACT:
A virtual I/O processor (VIOP) is implemented using a programmed I/O (PIO) unit. The PIO unit is complemented by a VIOP interrupt, a VIOP interrupt handler, and a number of VIOP data structures. Preferably, the PIO unit is further complemented with a set of dedicated I/O global registers, a number of VIOP library read/write routines for various I/O device types, and non-blocking read and write operations. During execution, these elements cooperate with each other to perform multiple sequences of programmed I/Os as if they were being performed by a dedicated I/O processor.

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