Telebit and Xenix
Superuser
root at medsys.uucp
Wed Oct 11 08:10:28 AEST 1989
Here is a summary of the mail and news traffic received regarding
use of a Telebit Trailblazer with SCO Unix/Xenix. It would appear to
me that there are problems with Unix 3.2 gettydefs configuration. The
EXTA and EXTB designations have apparently gone by the boards, yet B.
Templeton appears to be using them to acheive 19200 baud. My current modem
entry for 19200 is:
4 # B19200 HUPCL ECHOE CR1 NL1 #
B19200 CS8 SANE HUPCL TAB3 ECHOE IXON IXOFF IXON IXOFF IXANY #\r\n( For BBS log in as "bbs" , password: "bbs" )\r\n@!login: # 3
It appears that the speed IS being set, but only when I edit the /etc/inittab
file by hand. The "uuinstall" utility does not work correctly, and in fact,
does not display any of the 19200 or 38400 baud entries using option #4 --
Mode:Speeds defined in /etc/gettydefs.
Also, even though the "stty" tells me I am connected at 19200, uucico tells
me in xferstats that it's running 50% slower. (Do I need a stopwatch??)
The xferstats comparisons are as follows (using same modem settings):
Xenix 2.3.2
uunet!root M (9/21-23:52:14) (C,4924,35) [tty1A] <- 67062 / 62.060 secs,
1080 bytes/sec
uunet!root M (9/21-23:53:07) (C,4924,37) [tty1A] <- 51960 / 48.520 secs,
1070 bytes/sec
uunet!root M (9/21-23:53:37) (C,4924,39) [tty1A] <- 25703 / 24.640 secs,
1043 bytes/sec
Unix 3.2
uunet!root M (10/8-23:18:09) (C,5942,19) [tty1A] <- 14995 / 28.840 secs,
519 bytes/sec
uunet!root M (10/8-23:18:37) (C,5942,21) [tty1A] <- 27042 / 47.100 secs,
574 bytes/sec
uunet!root M (10/8-23:19:29) (C,5942,23) [tty1A] <- 54296 / 94.060 secs,
577 bytes/sec
Much of the info below does not specifically pertain to Unix 3.2 but it
may be of some help to others configuring modems in Xenix.
*****
Date: Sat, 30 Sep 89 06:57 PDT
From: Kayvan Sylvan <mrspoc.transact.com!kayvan at uunet.UUCP>
Internet: kayvan at Transact.COM -*- UUCP: ...!{apple,pyramid,mips}!mrspoc!kayvan
I use the following configuration:
Every site that uses Telebits is listed in my Systems file as 19200 baud.
In my Devices file I have:
#
# Modems
# Put the low-speed-only modem(s) first so that they will be attempted
# first for low speed calls.
#
ACU ttyA11 - 1200-2400 hayes2400
ACU ttyA9 - 19200 tbblaze
ACU ttyA9 - 2400 tb2400
ACU ttyA9 - 1200 tb1200
ACU ttyA10 - 19200 tbblaze
ACU ttyA10 - 2400 tb2400
ACU ttyA10 - 1200 tb1200
# In order to reset the telebit mode settings, uncomment the following
# lines and do:
# disable ttyA9
# disable ttyA10
# cu -lttya9 -s19200 -x5 666
# cu -lttya10 -s19200 -x5 666
#ACU ttya9 - 19200 tbreset
#ACU ttya10 - 19200 tbreset
#
Then, I use the following Dialers entries for dialing out. Since I use
all 3 modems as dialin/out lines, I have the corresponding "&dialer"
entries as well. tbreset is my fake dialer entry for resetting the
modem configuration.
# Telebit dialers
# tb1200, tb2400, tbblaze for 1200, 2400 and 19200 baud.
tb1200 =W-, "" A\pA\pA\pT OK ATM0S50=2DT\T CONNECT\s1200
tb2400 =W-, "" A\pA\pA\pT OK ATM0S50=3DT\T CONNECT\s2400
tbblaze =W-, "" A\pA\pA\pT OK ATM0S51=5S111=30S50=255DT\T CONNECT\sFAST
&tb1200 =,-, "" A\pA\pA\pT OK ATHQ6S50=0S0=1 OK
&tb2400 =,-, "" A\pA\pA\pT OK ATHQ6S50=0S0=1 OK
&tbblaze =,-, "" A\pA\pA\pT OK ATHQ6S51=255S50=0S0=1S111=255 OK
# This entry will reset the Telebit modem to desired modes
tbreset =,-, "" A\pA\pA\pT OK ATHQ6S45=255S50=0S51=255S52=2S53=3S54=3 OK ATS58=2S66=0S68=255 OK ATS0=1S111=255S92=0S95=0S61=0S255=1 OK AT&W1 OK ATZ OK
I found that this works very well for me and allows dialin/out access
(which I don't think dialTBIT would).
*****
Date: Sun Oct 1 06:28:35 1989
From: cs.utexas.edu!albion.utah.edu!rel.mi.org!bob at uunet.UUCP (Bob Leffler)
bob at rel.mi.org or {uunet!edsews, rutgers, sharkey}!rel!bob
Here's my setup:
6 # EXTA HUPCL OPOST CR1 ECHOE NL1 #
EXTA CS7 PARENB SANE HUPCL TAB3 ECHOE IXANY #\r\nlogin: # 5
E1 F1 Q4 T V1 X1 Version BB4.00
S00=001 S01=000 S02=128 S03=013 S04=010 S05=008 S06=002 S07=040 S08=002 S09=006
S10=007 S11=070 S12=050
S45=000 S47=004 S48=000 S49=000
S50=000 S51=004 S52=001 S53=004 S54=004 S55=000 S56=017 S57=019 S58=003 S59=000
S60=000 S62=003 S63=001 S64=000 S65=000 S66=000 S67=000 S68=255
S90=000 S91=000 S92=001 S95=000
S100=000 S101=000 S104=000
S110=000 S111=255 S112=001
S121=000
Since my throughput typically is between 900-1300 cps, it appears to be
dependent on the other machine. Between my AT running Xenix/286 2.2.1
and a Sun 3/280 at the office, I usually get around 1300 cps.
I am having problems with getty thinking there is an inbound call. I have
the internal T18PC modem. The symptoms are that ungetty can't disable the
port (line in use error), the modem won't answer the line on inbound calls,
and the getty process on that port can't be killed. The only way I've
been able to resolve the situation is to reboot. Needless to say, that
gets old real quick.
I've be experimenting with DTR/DSR to see what are the effects, but
whatever the settings are, it doesn't appear to stop the problem from
happening.
Perhaps when SCO starts shipping Xenix/286 2.3, modem control might
get better. :^)
*****
Date: Sun, 1 Oct 89 18:16:33 EDT
From: watmath!looking.on.ca!brad at uunet.UUCP (Brad Templeton)
Tee-hee. Tee-hee.
You fell into the same trap as I did. Do it again and time it with
your stopwatch. Your new uucico is just as fast, it just *reports* times
that are twice as long, througputs that are thus half as good.
Scared me for a while, too.
*****
Date: Mon Oct 2 21:40:52 1989
From: milhow1!how at uunet.UUCP
Mike Howard uunet!milhow1!how or milhow1!how at uunet.uu.net
I have been running SCO Xenix 286 2.3.1 and have been getting around
350 characters/second. I recently received the support suplement
which upgrades 2.3.[01] to 2.3.2 and replaced my uucico with the
2.3.2 uucico and am back to 850 or so cps. [I have my TB+ speed
locked at 9600 baud rather than 19.2 out of fear of my antique
8 port async board]. It turns out that 2.3.1 uucico is a Large
model 8086 binary and 2.3.2 uucico is a 80386 binary.
Your speed difference between Xenix and Unix could be the result
of some brain dead inefficiency like this rather than the TB setup.
BTW - I my dialer is not the stock SCO dialer, but rather a hack
job I did on dialHA12.c prior to getting the uucp which handled
TB's. I put in a couple of features for programming the registers
on a call by call basis, so have never used their dialer.
*****
Date: 3 Oct 89 18:58:52 GMT
From: terry at eecea.eece.ksu.edu (Terry Hull)
Work: terry at eecea.eece.ksu.edu, rutgers!ksuvax1!eecea!terry
Well, I called SCO support today and found out their drivers break
when you try to use them at 19200 baud. They told me if I backed off
to 9600 things world work. I was also told there would be a SLS fix
coming for the problem. No time frame was given though.
I guess that means that all you TB+ people out there had better be ready
to go to 9600 when you upgrade to UNIX 3.2.
*****
Date: 5 Oct 89 21:34:41 GMT
From: brad at looking.on.ca (Brad Templeton)
Well, I don't have rtsflow or ctsflow set in the gettydefs line.
(I do have a problem with getty where it insists that dialing in logins
come in with 0 parity, which is a pain -- the istrip isn't working)
Here's the gettydefs line
p # EXTA HUPCL ISTRIP #
EXTA CS8 SANE HUPCL TAB3 ECHOE IXANY #(Telebit 19200) login: # 3
The trick might be in my telebit registers, which are a bit different from
SCO's setup. But they work with dialTBIT and uugetty.
E0 F1 M1 Q0 T V1 X3 Version BA4.00
S00=001 S01=000 S02=043 S03=013 S04=010 S05=008 S06=004 S07=040 S08=002 S09=006
S10=007 S11=070 S12=050
S45=000 S47=004 S48=000 S49=000
S50=000 S51=005 S52=002 S53=001 S54=001 S55=003 S56=017 S57=019 S58=002 S59=000
S60=000 S61=045 S62=003 S63=001 S64=000 S65=000 S66=000 S67=000 S68=255
S90=000 S91=000 S92=000 S95=000
S100=000 S101=000 S102=000 S104=000
S110=255 S111=255 S112=001
S121=000
Every once in a while I will get strange behaviour on dial-OUT when
the relay will click on and off quickly 4 times in a row, but that's rare
and everything seems to be working otherwise. Just fine at 19.2k
Right now I have the modem connected to a standard COM1.
But it also worked connected to my smart card Intellicon port, which I plan
to switch it over to shortly.
*****
--
__ __| __ __ LaVerne Olney -- Med-Systems
|/^\/^\ /__) / | (__ \ / (__ Medical Office Management Software
| | | \__ \__| ___) \/ ___) Kingsport, TN 37660 U.S.A.
Unix BBS: 615-288-3957 / UUCP: uunet!medsys!laverne
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