[1303] in Athena Bugs
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daemon@ATHENA.MIT.EDU (don@ATHENA.MIT.EDU)
Fri Nov 4 00:51:05 1988
From: <don@ATHENA.MIT.EDU>
Date: Fri, 4 Nov 88 00:50:24 EST
To: rt-testers@ATHENA.MIT.EDU
Cc: geer@ATHENA.MIT.EDU, saltzer@ATHENA.MIT.EDU
i have fixed the "rt broadcast-addr/garbage-packet bug".
the adapter-initialization routine unzap() was correctly
setting up loop-back mode before resetting, so its garbage
transmission was being kept to itself. but, it was returning
to its caller before this transmit completed. in ifconfig's case,
this meant that a subsequent ARP request was initiated before the
loopback-transmission had completed. a while() loop, which checks
the csr bit UN_TXDONE, provides just the right delay, and the
ARP request is now successfully sent, first try.
-don
