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NetBSD master CVS tree commits

Fri May  8 08:39:01 PDT 1998
Update of /cvsroot/src/sys/dev/tc
In directory nb00:/tmp/cvs-serv26260

Modified Files:
Log Message:
Fix a problem that will reboot the system with no message as to what the
problem was.  A collision between a select and reselect would leave TC
non-zero from the command-out DMA count, which could later be considered
a fatal condition, causing a reboot.  The message for that error was
only displayed with DEBUG.  Fixed by clearing TC on a reselect.  The
non-zero TC detection won't occur in this case, so unconditionally
display the message if it occurs.

Workaround for another problem that resulted from an "Illegal Command"
status from the 53c94 which would get ignored and result in a timeout
(which also reboots the system).  Added the missing check for the
illegal command status, and add the workaround of resending the "accept
message" command to the 53c94.  Correct fix will be to determine why the
message wasn't sent in the first place.  Abort if the resending the
command doesn't work.

Correctly detect a spurious interrupt and ignore it.  This was taken
from a newer Mach driver, but did not get the check converted for the
design difference between the current NetBSD driver and the Mach driver.

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