AST Cluster Adapter question

[Lindsay Cleveland]

Every now and then my AST Async Cluster Adapter stops responding
after a (warm) reboot.

Buried in the manual is the answer:

              NOTE
   An I/O write command to address 02BFh or 01BFh must be performed
   after each reset or powerup to enable interrupts from the
   channels not configured as COM1 or COM2.

I'm running the board in "enhanced" mode, using the regular
Microport serial driver, and installed via:

  /etc/ttypatch -t2 -n4 -i3 -v447 -a416 -m0

In those instances when it stops responding, a poweroff/poweron
takes care of everything.  But this is a bit inconvenient.

Shall I proceed with creating a "reset" program to be invoked at
boot time, am I overlooking something obvious somewhere, or has
someone already solved this problem?

Cheers,
  Lindsay

Lindsay Cleveland         Digital Systems Co.   Atlanta, Ga
  gatech!dscatl!lindsay     (404) 497-1902
                         (U.S. Mail:  PO Box 1149, Duluth, GA  30136)