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- From: michael@jester.GUN.de (Michael Gerhards)
- Newsgroups: comp.os.coherent
- Subject: Re: Loosing chars with ZyXEL 1496E+ and Coherent 4.0.1
- Message-ID: <9212263755@jester.GUN.de>
- Date: 27 Dec 92 00:27:32 GMT
- References: <mFDcwB1w165w@blues.kk.sub.org>
- Organization: private
- Lines: 61
- X-Newsreader: Tin 1.1 PL4
-
- kosta@blues.kk.sub.org (Kosta Kostis) writes:
- > This is a modem (ZyXEL 1496E+) / Coherent (4.0.1) problem.
- >
- > I'm running Coherent 4.0.1 on a i386SX/16 with 2 MB and a ZxXEL 1496E+
- > having real trouble connecting them. I have never faced these problems
- > with my old Hyundai 2400 bps internal modem. The ZyXEL 1496E+ is
- > connected to a multi I/O card with 16450 UARTs, so I thought, I'd better
- > run at no more than 19200 bps. I use device "/dev/com1fr" for the modem.
-
- The highest speed Coherent allows on the serial port is 19200. But if you
- have 16450UARTs ( with no internal buffer ) the cpu cannot get every
- character. Thsi is because of the multi-tasking-environment, where many jobs
- have to be done at the same time. Try to get a 16550UART with an internal
- buffer. I tested the Zyxel 1496b ( internal ) and I get ca. 900 cps without
- any errors. ( Coherent's uucp )
-
- > I guess there's some trouble with my device driver. :-(
-
- No, the modem speed is only to fast for the cpu.
-
- > # /etc/modemcap:
-
- I have the same, but...
-
- > # /usr/bin/modeminit for a ZyXEL 1496E+
- >
- > DEV=/dev/modem
- > BAUD=19200
- > sleep 4 >$DEV&
- > stty $BAUD <$DEV
- > cat >$DEV <<\!
- > AT E0 V0 Q1 S0=1 &B1 &C1 &D3 &H3 &K4 &N0
- > !
-
- my /usr/bin/modeminit looks like this:
-
- # /usr/bin/modeminit 9/5/91
-
- DEV=/dev/modem
- BAUD=19200
- sleep 4 >$DEV&
- stty $BAUD <$DEV
- cat >$DEV <<!
- AT E0 Q1 V0 X7 M0 S0=0 S38=32 &D3
- !
-
- # end of /usr/bin/modeminit
-
- > # modem settings/information
-
- I didn't change anything in the modem-setting. The modem has its original
- default values ( atz0 ) and the init is done with /usr/bin/modeminit.
-
- > U1496E V 5.04a P
-
- Oops, I still have the 4.12
-
- Michael
- --
- * michael@jester.gun.de * Michael Gerhards * E.-Hoepner-Strasse 41 *
- * D - 4040 Neuss 1 * Voice: 49 2131 470989 *
-