Path: utzoo!attcan!uunet!portal!cup.portal.com!Thomas_E_Zerucha
From: Thomas_E_Zerucha@cup.portal.com
Newsgroups: comp.sys.atari.st
Subject: Re: RS-232 & MWC:  Help....
Message-ID: <6029@cup.portal.com>
Date: 29 May 88 02:01:29 GMT
References: <56200002@bucc2>
Organization: The Portal System (TM)
Lines: 6
XPortal-User-Id: 1.1001.3273

>See if any characters are in the buffers...
  I don't know of any completely portable way to do this, so I would suggest
isolation to a subroutine.  On the ST, the standard way is to use the XBios
function Iorec to get the address of the input and output buffers for the
RS 232 drivers and compare the head and tail pointers to see if there is
anything in the buffer.