cgd
Fri May 12 13:54:48 EDT 1995
Update of /a/cvsroot/src/sys/dev/isa
In directory pain.lcs.mit.edu:/b/tmp/cvs-serv11699

Modified Files:
	com.c 
Log Message:
(1) conditionalize debugger usage in comeint with DDB, not COMCONSOLE;
	latter would lead to undefined symbols if DDB not defined.
(2) check for break on console, and therefore debugger entry (if ddb
	in kernel) earlier, so that the device doesn't need to be open.
(3) return immediately after breaking into the debugger in comeint().
(4) only do the normal character input routine in comintr if receive
	mask yeilds _EXACLTY_ LSR_RXRDY.  if there's only a receive
	error, or there's a receive error _and_ a received character,
	do comeint().
(former two by me.  latter two from Bob Baron <rvb@cs.cmu.edu>.)