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Date:      Sun, 2 Jun 2002 21:41:31 +1200
From:      Glenn Todd <g.todd@internet.co.nz>
To:        "freebsd-questions@FreeBSD.ORG" <freebsd-questions@FreeBSD.ORG>
Subject:   silo overflows with ISA modem
Message-ID:  <20020602214131.A2039@Hawk.internet.co.nz>

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I have just installed a ISA internal modem which is recognised during boot 
up.  I added the modems ID to sio.c rebuilt the kernal and on boot up the 
card was recognised.

sio3: configured irq 9 not in bitmap of probed irqs 0
sio3: <Rockwell 56K ACF II Fax+Data+Voice Modem> at port 0x3e8-0x3ef irq 9 
on isa0
sio3: type 16550A

However my pppd script (uses chat for connection) is unable to create a 
connection to my isp.  This same script altered only for the device works 
fine for /dev/cuaa0 which is my external modem on sio0

however if I use the command

cu -l /dev/cuaa -s 115200 I can dial my isp by hand.  However, a check of 
the modem profiles using at&v is very slow and compared to the external 
modem, and I getting many sio overflows.  The following was for on at&v 
query using cu.

sio3: 1 more silo overflow (total 28)
sio3: 1 more silo overflow (total 29)
sio3: 1 more silo overflow (total 30)
sio3: 2 more silo overflows (total 32)
sio3: 1 more silo overflow (total 33)
sio3: 1 more silo overflow (total 34)
sio3: 1 more silo overflow (total 35)

What have I missed and how do I get this internal modem working so that I 
can retire the old external.  I am running FreeBSD 4.6-PRERELEASE #7.

Glenn Todd

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