DMA emulation via interrupt muxing

Details DMA emulation via interrupt muxing DMA emulation via interrupt muxing

1995-05-05

1998-01-13

Harvey, Jack B.

395733, 395741, 395842, 395848, 395835, 395836, 395681, 395527, 395822, 395282, G06F 946, G06F 1314

Patent

active

057088152

ABSTRACT:
An apparatus and method for coordinating DMA between memory and a peripheral on a bus which does not support DMA comprises DMA emulation circuitry in the peripheral which allows the internal modules of the peripheral to share a single shared interrupt output line. An emulation device driver assists the microprocessor in determining the cause of interrupt signals received by the shared interrupt output line and how to service the interrupt.

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