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From: rcstack@rw9.urc.tue.nl (Studenten Vereniging Stack)
Newsgroups: comp.unix.amiga
Subject: Serial port, hardware handshaking not availible ?!?
Summary: Why does this %$#&* machine not support hardware handshaking!
Message-ID: <rcstack.669483394@rw9.urc.tue.nl>
Date: 20 Mar 91 15:36:34 GMT
Sender: USENET News System <news@urc.tue.nl>
Reply-To: rcstack@urc.tue.nl
Lines: 35

We have an A3000 UX connected to a serial printer (QMS lasergrafix 1200). To
print graphics we have to options:

  - slow mode; 4 bit binary data encoded as 0123456789ABCDEF

  - fast mode; 8 bit raw binary data

Currently we are using XON/XOFF handshaking, so we can only use slow mode;
if the printer receives an XOFF in software handshake mode, it stops receiving
data until it receives an XON. While sending a bitmap in fast mode, everytime
a ctrl-s is in the data (once every 256 bytes average) the data is lost until
the next XON character.

This is not nice! :-(

Sending a bitmip in fast mode already takes long enough at 38400 baud so we
tryed to put our pizza boxes (sorry) in CTS/RTS handshake mode. We typed

stty ctsxon </dev/term/ser  while logged in as root.

But no, no hardware handshaking. After reading the manual we found... Nothing.
I know the amiga can do hardware handshaking (at least my old 500 can).

BUT HOW DO I DO IT ON AMIGA UNIX!

(Sorry for shouting but after three days hacking I'm a little frustrated.)


Please send replies to us; we're desperate!

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