*BSD News Article 70622


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From: kag@citysource.com (Kenneth Graves)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: silo overflows with Boca AT66 card
Date: Mon, 10 Jun 1996 18:03:59 -0400
Organization: Graves Consulting, Inc.
Lines: 19
Message-ID: <kag-1006961803590001@kag.tiac.net>
NNTP-Posting-Host: kag.tiac.net

I moved from BSDI 1.1 to FreeBSD 2.1-R.  Everything is working nicely,
except my AT66 card: lots of silo overflows.  The ports are usable
for vt100, but are hopeless for zmodem or ppp.

I tried fiddling with FIFO_TRIGGER_* in sio.c, but can't get the problem
to go away.  The two standard serial ports are working fine.

Anyone have a similar problem?  A solution?

The appropriate kernel configuration lines:
device          sio0    at isa? port "IO_COM1" tty irq 4 vector siointr
device          sio1    at isa? port "IO_COM2" tty irq 3 vector siointr
device          sio2    at isa? port 0x220 tty flags 0x705
device          sio3    at isa? port 0x228 tty flags 0x705
device          sio4    at isa? port 0x240 tty flags 0x705
device          sio5    at isa? port 0x248 tty flags 0x705
device          sio6    at isa? port 0x260 tty flags 0x705
device          sio7    at isa? port 0x268 tty flags 0x705 irq 5 vector siointr
--kag