PCI LPT & RS232
Software Guide
Chapter 3 Page 30
are ignored. The RTS output line is set true just in
case the external serial device needs a true signal.
Type 4
3 Wire Handshake - Really no handshake at all
since the PC transmits irrespective of the handshake
lines. The 3 wires are TxD, RxD and Ground, no
other lines are required. Thus the CTS, DSR and
DCD inputs are ignored. The RTS and DTR output
lines are set true just in case the external serial
device needs a true signal.
Note:
If hardware handshaking is not specified in the
NEWCOM.SYS parameters, type 4, 3 Wire
Handshake is selected automatically.
Configuring And Installing NEWCOM.SYS
To load the Serial Solutions for DOS device driver an entry needs
to be added to the CONFIG.SYS file. Any simple text editor,
EDIT for example, can edit the CONFIG.SYS file for example.
The installation procedure given below is for a PCI LPT & RS232
as COM 5 - COM6.
The parameter required by the NEWCOM.SYS driver are those
returned by the BBCARDS.EXE application earlier. A brief
explanation for the parameters required by NEWCOM.SYS
follows:
Port Address.
/A5-6,0140
COM ports 5 and 6 are defined, with an i/o address range that
begins at 0140h with the next port having an i/o address that is 8
higher than the previous. i.e. COM5 has an address of 0140h,
therefore COM6 will have an address of 0148h.
