Data transfer system having transfer discrimination circuit

Details Data transfer system having transfer discrimination circuit Data transfer system having transfer discrimination circuit

1988-06-10

1991-11-26

Shaw, Gareth D.

Boots, shoes, and leggings

36493548, 36494081, 3649501, 3649503, 364DIG2, G06F 1342

Patent

active

050688200

ABSTRACT:
A data transfer system having a transfer discrimination circuit for discriminating the type of data transfer between an input/output channel device and I/O devices for a computer includes a transfer discrimination circuit. This circuit includes a edge detection unit operating in response to a tag signal supplied to the edge detection unit for detecting the trailing edge of the tag signal after a leading edge of the tag signal has passed. The edge detection unit having a leading edge detector, a trailing edge detector, a storage element, and logic gate circuits. A timing unit is included operating in response to the output of the edge detection unit for counting a predetermined time, along with a discrimination storage unit operating in response to the output of the timing unit for delivering an output indicating an interlock data transfer or an output indicating a data streaming feature data transfer.

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