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PA2AGA > TCPDIG 23.07.97 03:22l 120 Lines 3868 Bytes #-10281 (0) @ EU
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Subject: TCP-Group Digest 97/65
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TCP-Group Digest Thu, 3 Jul 97 Volume 97 : Issue 65
Today's Topics:
(no subject)
nos and a palmtop
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----------------------------------------------------------------------
Date: Thu, 03 Jul 1997 09:37:51 +0900
From: kimdongwok <woki@infomedi.net>
Subject: (no subject)
unsubscribe
------------------------------
Date: Wed, 02 Jul 1997 06:50:21 -0700
From: Karl Larsen <k5di@acca.nmsu.edu>
Subject: nos and a palmtop
Several people replied to my previous query with suggestions as well as
asking for updates on how it worked for me so here's where I'm at:
I wanted a small system to take backpacking so I tried the obvious solution
of using the ax25 packet driver for the baycom in combination with nos
and an HP200LX palmtop.
I found several versions of the ax25 packet driver, all of which had the
same results for me.
What I found was that the ax25 driver seemed to work just fine before I start
nos. That is, using the pktstat program showed incoming packets coming
in and being dropped.
After starting nos, I found that only the smallest of packets would be
sucessfully received. Longer packets would on occasion sneak thru but for
the most part would be rejected.
I tried using the baypac program and was able to reliably transmit several
hundred byte packets.
My conclusion is that nos is locking interrupts for too long of a period
for the interrupt driven ax25 packet driver to accomodate. The palmtop
has a 80186 processor with I think something around 7.8MHz so it is
definately on the wimpy side.
How much ram does that computer have?
The other problem I found was that the software dcd in both ax25 and
baypac programs would never allow transmitting. I presume that this is
because the noise is creating a signal which looks somewhat valid.
At this point it looks to me like I'll be unable to get a tcp/ip station
using the 200LX to work but will be stuck with baycom and raw ax25.
As you know Glenn the baycom modum uses a lot of ram in the computer and on
top of that
you have the ax25 patch to nos. I would try making a smaller version of NOS. A
month ago
I was compiling NOS for a friend and then decided to make a NET compile. I
turned off
just about everything and it compiled. It was wimpy but it takes very little
ram. It
looks like maybe 250 kbytes.
--
Glenn
Glenn Engel / glenn_engel@hp.com / Hewlett Packard / NN7N / 425-335-2066
--
73, de Karl aka k5di
Karl F. Larsen Box 74, Mesilla Park, NM 88047 (505) 524-3303
k5di@k5di.cruces.nm.usa.noam k5di@acca.nmsu.edu
------------------------------
End of TCP-Group Digest V97 #65
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