Help fixing "dropped characters" problem using tip.

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3 total messages Started by Joseph Grace Fri, 10 Apr 1992 23:36

#1278

Author: Joseph Grace
Date: Fri, 10 Apr 1992 23:36

18 lines
1038 bytes

Hi,

I have a Telebit T3000, a NeXT serial cable and a NSColor Turbo.  I am
using tip to log on at 14400+ BAUD to a remote UNIX computer
and am losing characters during screen draws and refreshes
(from the remote computer).  Also, I believe I have the modem
using CTS/RTS (hardware handshaking), so if my NS is paying attention
to handshaking, it should never drop characters, right?

Any help getting my machine to cooperate would be appreciated!

Also, if anyone knows how to get tip to pass characters through
transparently (particularly, ^A and ^P), I would like to know!

Thanks much,

= Joe =
jgrace@netcom.com

Re: Help fixing "dropped characters" problem using tip.

#1305

Author: Marcel Waldvogel
Date: Sat, 11 Apr 1992 10:50

23 lines
1509 bytes

In article <kgtj7d=.jgrace@netcom.com> jgrace@netcom.com (Joseph Grace) writes:
>I have a Telebit T3000, a NeXT serial cable and a NSColor Turbo.  I am
>using tip to log on at 14400+ BAUD to a remote UNIX computer
>and am losing characters during screen draws and refreshes
>(from the remote computer).  Also, I believe I have the modem
>using CTS/RTS (hardware handshaking), so if my NS is paying attention
>to handshaking, it should never drop characters, right?

Do you open the /dev/cuf[ab] devices? They provide flow control, whereas
the standard /dev/cu[ab] don't.

>Also, if anyone knows how to get tip to pass characters through
>transparently (particularly, ^A and ^P), I would like to know!

I wasn't able to make the stream fully transparent, but my ~/.tiprc
looks like the following, and since then, it transparently sends ^A
and ^P (parity=none has nothing to do with it but is quite nice to have):

raisechar=\377
force=\377
parity=none

-Marcel

Re: Help fixing "dropped characters" problem using tip.

#1478

Author: Andrew Loewenstern
Date: Sun, 12 Apr 1992 07:11

20 lines
1365 bytes

In article <kgtj7d=.jgrace@netcom.com> jgrace@netcom.com (Joseph Grace) writes:

>  I have a Telebit T3000, a NeXT serial cable and a NSColor Turbo.  I am
>  using tip to log on at 14400+ BAUD to a remote UNIX computer
>  and am losing characters during screen draws and refreshes
>  (from the remote computer).  Also, I believe I have the modem
>  using CTS/RTS (hardware handshaking), so if my NS is paying attention
>  to handshaking, it should never drop characters, right?

Which port are you using?  You should use either ttydfa or ttydfb for hardware  
flow-control..   I run my T3 at 38400 bps with no loss of characters.

If you are using ttydfa or ttydfb, make sure you have s58=2 and s68=255 on your  
T3.

andrew
-- 
andrew@cubetech.com
Andrew Loewenstern            |  "listen: there's a hell of a good universe
Cube Technologies, Inc.       |   next door; let's go." --- e.e. cummings

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