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Mark Pizzolato 91bd90c368 PDP11, VAX: Change VH programmed I/O to consistently complete after delay
previously, programmed I/O was initiated and completed as the time it was
initiated.  Now that output is rate limited to the port selected speeds the
output buffer can fill and I/O be dropped when the buffer was full.  Now all
output is setup in the register write path and completed in the unit service
path.  A separate transmit service unit now performs all transmit I/O
completion activity.
2018-06-21 08:42:05 -07:00
..
2016-05-15 15:25:33 -07:00
2015-02-13 06:18:24 -08:00