Data driver for multiple mode buffered processor-peripheral data

Details Data driver for multiple mode buffered processor-peripheral data Data driver for multiple mode buffered processor-peripheral data

1987-10-13

1990-09-04

Williams, Jr., Archie E.

Boots, shoes, and leggings

3649352, 3649354, 364935, 364939, 364940, G06F 300, G06F 1312, G06F 1342

Patent

active

049549839

ABSTRACT:
A data transfer driver transfers multiple byte data words supplied by a data processing device to a peripheral device as a sequence of single data bytes. The driver operates selectively in either a handshaking mode, wherein data bytes are transferred to the peripheral device asynchronously in response to handshaking signals from the peripheral device, or in a streaming mode where data bytes are transferred to the peripheral device periodically. The driver includes circuitry that permits the data processing device to check the operation of the driver and to monitor handshaking signals produced by the peripheral device.

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