Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!ulowell!cbmvax!bryce
From: bryce@cbmvax.UUCP (Bryce Nesbitt)
Newsgroups: comp.sys.amiga.tech
Subject: Re: using hardware handshaking on the SER: port
Keywords: serial.device hardware handshaking
Message-ID: <5999@cbmvax.UUCP>
Date: 18 Feb 89 00:22:10 GMT
References: <570@jc3b21.UUCP>
Reply-To: bryce@cbmvax.UUCP (Bryce Nesbitt)
Organization: Commodore Technology, West Chester, PA
Lines: 23

In article <570@jc3b21.UUCP> crash@jc3b21.UUCP (Frank J. Edwards) writes:
|
|...I send one line's worth of data to my plotter and I get an error 13
|(Ser_NoDSR).

Surprise!  If DSR is ever low, the serial device gives that error.

|The DTR output on my plotter is run directly to the DSR pin, but I have
|seen this signal drop low from the plotter when it's 256 character buffer
|has filled up.

Connect DTR from the printer to CTS.  leave the Amiga's DSR input alone.
Apple uses the bizare concept of "DTR" handshake; by connecting to 
CTS you will be emulating "real" CTS/RTS handshake.

|(what can I say; its an old Apple plotter [ugh!]).

-- 
|\_/|  . ACK!, NAK!, EOT!, SOH!
{O o} .     Bryce Nesbitt
 (")        BIX: bnesbitt
  U	    USENET: cbmvax!bryce@uunet.uu.NET -or- rutgers!cbmvax!bryce
Disclaimer: I'm not an official, and this is not an official opinion.