by Kenny Helm » Wed, 07 Jan 1998 04:00:00
I connected a 8088 running kermit to a linux box via serial port. I'm
using getty-ps. the connection is working but is slow(10 to 12 char
burst about every 20 secs.) kermit is set with 9600 8n1 vt100 and the
getty is set for 9600.
does anyone know why this is happening?
by Kenny Helm » Wed, 07 Jan 1998 04:00:00
> does anyone know why this is happening?
by Mark Gr » Thu, 08 Jan 1998 04:00:00
9600 is too fast for the 8088 to keep up with and you are gettingQuote:> I connected a 8088 running kermit to a linux box via serial
> port. I'm using getty-ps. the connection is working but is slow(10
> to 12 char burst about every 20 secs.) kermit is set with 9600 8n1
> vt100 and the getty is set for 9600.
> does anyone know why this is happening?
by Pat Thoyt » Thu, 08 Jan 1998 04:00:00
> > I connected a 8088 running kermit to a linux box via serial port. I'm
> > using getty-ps. the connection is working but is slow(10 to 12 char
> > burst about every 20 secs.) kermit is set with 9600 8n1 vt100 and the
> > getty is set for 9600.
> > does anyone know why this is happening?
> It is exactly 16 char bursts.
I suggest you look at setserial on the linux box. You can turn off
this feature. There is a serial-HOWTO which might mention this as
well. Also - check your /etc/rc.d/* files. I've used 8088 and 286's
in this way and never had this problem (otherwise I'd give you an
explicit answer). I suspect you have a default setserial command
designed for a fast modem being run at bootup.
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by Stuart R. Full » Thu, 08 Jan 1998 04:00:00
:
: > I connected a 8088 running kermit to a linux box via serial
: > port. I'm using getty-ps. the connection is working but is slow(10
: > to 12 char burst about every 20 secs.) kermit is set with 9600 8n1
: > vt100 and the getty is set for 9600.
:
: > does anyone know why this is happening?
: >
:
: 9600 is too fast for the 8088 to keep up with and you are getting
: overrun errors which cause kermit to retransmit. 2400 is about the
: best you can reliably expect from a 8088 in my experience, unless you
: bypass the bios entirely and write it all in assembly.
More likely that the IRQ for the serial port does not agree with what the
kernel thinks it is.
Look at the output of:
$ setserial -bg /dev/ttyS[0-3]
and compare them to jumpers and/of BIOS settings. If they're wrong, then you
can either change the jumpers or the BIOS settings, or you can use setserial
to change what the kernel think they are.
Stu
by Brian McCaule » Fri, 09 Jan 1998 04:00:00
> I connected a 8088 running kermit to a linux box via serial port. I'm
> using getty-ps. the connection is working but is slow(10 to 12 char
> burst about every 20 secs.) kermit is set with 9600 8n1 vt100 and the
> getty is set for 9600.
> does anyone know why this is happening?
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by James M Bes » Fri, 09 Jan 1998 04:00:00
> > I connected a 8088 running kermit to a linux box via serial
> > port. I'm using getty-ps. the connection is working but is slow(10
> > to 12 char burst about every 20 secs.) kermit is set with 9600 8n1
> > vt100 and the getty is set for 9600.
> > does anyone know why this is happening?
> 9600 is too fast for the 8088 to keep up with and you are getting
> overrun errors which cause kermit to retransmit. 2400 is about the
> best you can reliably expect from a 8088 in my experience, unless you
> bypass the bios entirely and write it all in assembly.
by Kenneth Sanisl » Mon, 12 Jan 1998 04:00:00
>does anyone know why this is happening?
1. Connecting and 8088 to my Linux box via serial ports
Right now I have a 386/33DX running Linux. I also have a 8088 running Dos
(and CP/M when I'm really bored. :) While eventually I want to upgrade the
8088 to a 386, and get a 486 or higher, I'm still asking now because:
a) it will be a while (monetary reasons)
b) I'll still want to do this after I've upgraded.
Neither of the machines have Ethernet cards in them, and I plan on
buying/making a serial cable to link them together (like a laplink cable). If
this can be done via the parallel port, even better, but I'll use serial for
now.
What I would like to do is connect the serial ports of the two machines, and
using the public domain packet drivers, and Clarkson University's CU/TCP
package, be able to telnet, ftp, etc... from my 8088 PC into my Linux box.
I know that this will probably involve using SLIP in one way or another. This
is where I need help. For starters, I don't have a clue on how to set up
SLIP. I remember trying to do this before, and all the docs kept talking
about DIP, contradicting themselves, and basically being as unhelpful as Unix
docs tend to be. One of the problems I remember I kept running into, was
phone numbers. Obviously in this setup, I don't need to dial anything, but
that's all the docs wanted to talk about. (Besides, the modem is for UUCP :)
Any help from anyone that's done this would be wonderful. I've looked at the
list of Howto's, but none of them deal with this (unless it's hidden away in
the Ethernet one.)
Thanks!!!
-Dan
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