Vincent Danen wrote in a message to Bob Juge:
 VD>  * Original msg was to Justin Baustert
BJ> JB> that SIO is setup correctly here:
BJ> JB> SIO.SYS (COM3:115200,INTERNET:3E8,NONE:4,-)        (etc.)
BJ>Try replacing the "-" with a "+".
 VD> Bob, what does the "+" do?  I thought only the "-" was valid there,
 VD> to allow the DOS programs access to the COM ports.  Never heard of
 VD> using "+" there... 
From SIOREF.TXT in SIO160D.ZIP:
     40
                        Appendix D, Advanced SIO Options
     The following is provided for the experienced user.  Inexperienced
     users get themselves into a lot of trouble when trying to use these
     options and they cause an inordinate number of support problems.
     Therefore, the following are unsupported options.  If you use them,
     you must work out the problems yourself or ask a friend how they got
     it working.
     Protection
     Placing a dash "-" or a plus "+" in the fourth parameter position, eg
     (COM1,3F8,IRQ4,-),  causes SIO not to provide any protection for that
     port.  The OS may still protect the port somewhat.  When the dash
     parameter is used the port is wide open (like DOS) for any process to
     access it.  If the plus is used, then DOS/Windows sessions are
     inhibited from turning DTR off.
                                   - Bob
Internet  : bob@juge.com
Telnet, Vmodem, WWW or FTP to juge.com
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