[comp.unix.i386] Maxpeed & Bi-directional Suggestions

gary@mic.UUCP (Gary Lewin) (10/28/89)

Several weeks ago there were some postings about the Maxpeed intelligent
serial controller card and bi-directional serial communications.  The
stated result was that the Maxpeed card would not work properly with
ISC 2.02 and modems running bi-directionally on single ports.  This is
incorrect.

As fate would have it, I was in the process of bringing up a Maxpeed
card at the same time that the Maxpeed serial bug postings came across
the net.  I do not remember who made these postings, but thank you very
much!  The warnings saved me a lot of time.  From this end, the card
was brought up, setup and verified that it would not work (simply, at
least).  Technical support at Maxpeed was immediately contacted.

Here is what you do to make a Maxpeed card work bi-directionally, which
works flawlessly both directions, by the way:

[Note: ttyaa & ttyaA are used as examples only.]

1.	Go into sysadm, select package management, select uucp and setup
	ttyaa (Note: ttyaa, NOT ttyaA).  When asked to select the kind
	of communications, select bi-directional.

2.	Edit /etc/inittab.  All you want to do here is exchange the ttyaa
	and ttyaA entries so that uugetty is running on ttyaA.

3.	If uugetty is running on ttyaa, kill the process and execute an
	init q to bring up uugetty on ttyaA.

4.	Edit /etc/gettydefs and change CS7 to CS8 and remove PARENB on
	whichever entries are necessary.  A sample of an old and new
	2400 baud entry is shown below:

OLD-----

2400# B2400 OPOST ONLCR TAB3 BRKINT IGNPAR IXON IXANY PARENB ISTRIP ECHO ECHOE ECHOK ICANON ISIG CS7 CREAD # B2400 OPOST ONLCR TAB3 BRKINT IGNPAR IXON IXANY PARENB ISTRIP ECHO ECHOE ECHOK ICANON ISIG CS7 CREAD #login: #2400

NEW-----

2400# B2400 OPOST ONLCR TAB3 BRKINT IGNPAR IXON IXANY ISTRIP ECHO ECHOE ECHOK ICANON ISIG CS8 CREAD HUPCL # B2400 OPOST ONLCR TAB3 BRKINT IGNPAR IXON IXANY ISTRIP ECHO ECHOE ECHOK ICANON ISIG CS8 CREAD HUPCL #login: #2400

5.	Edit /usr/lib/uucp/Devices.  Change the entry for ttyaa to ttyaA and
	add an entry showing a direct connection to ttyaa.

After all of these changes, everything should work just fine.  If there are
still problems, then take a look at your modem settings and check cable
connections.

I have no affiliation with Maxpeed and have provided the above information
for the sole purpose of helping a few people keep their sanity :-).

Gary Lewin

USMAIL: P.O. Box 2010,  Dallas, Texas  75221    /*    This  Section    */
UUCP:   {attctc, convex, texbell}!mic!gary      /*    Intentionally    */
DOMAIN: mic!gary@texbell.swbt.com               /*     Left  Blank     */