>   I would like to set up a dial-in port on NetBSD/current.  The DTE would be
> locked at 57600, N-8-1.  I try to change the CFLAGS to ((CS8 | HUPCL) & 
> ~PARENB) in ttydefaults.h and recompile gettytab.  Then I use std.57600 for
> tty table.  After kill -HUP 1, I can see the TxD/RxD flash madly although
> the line is on-hook.  Doesn't it wait carrier detection?  What's wrong with
> com driver?

Try the following patch.  Unfortunately, it means that you need a
carrier in order to dial out, but it should fix your problem in the
meantime.

	Mark
--------------------------------------------------------------------
Email: Mark_Weaver@brown.edu           | Brown University
PGP Key: finger mhw@cs.brown.edu       | Dept of Computer Science


diff -u  src/sys/arch/i386/isa/com.c.mhw1 src/sys/arch/i386/isa/com.c
--- src/sys/arch/i386/isa/com.c.mhw1	Thu Feb 10 06:13:52 1994
+++ src/sys/arch/i386/isa/com.c	Fri Feb 25 15:32:26 1994
@@ -142,7 +142,7 @@
 		DELAY(1000);
 	com_addr[unit] = port;
 	com_active |= 1 << unit;
-	comsoftCAR |= 1 << unit;	/* XXX */
+/*	comsoftCAR |= 1 << unit;	/* XXX */
 
 	/* look for a NS 16550AF UART with FIFOs */
 	outb(port+com_fifo, FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER_4);
@@ -481,7 +481,7 @@
         tp->t_cflag = cflag;
 
 	com = com_addr[unit];
-	outb(com+com_ier, IER_ERXRDY | IER_ETXRDY | IER_ERLS /*| IER_EMSC*/);
+	outb(com+com_ier, IER_ERXRDY | IER_ETXRDY | IER_ERLS | IER_EMSC);
 	if (ospeed == 0) {
 		(void) commctl(unit, 0, DMSET);	/* hang up line */
 		return(0);

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