Technical information

Newcom Parameters Serial Solutions
I/O Address.
Switch: /A range,hexaddr
Purpose:
Set the I/O address of serial port COMn.
’range’
’range’ must be given. Range specifies the COM ports,
range may be a SINGLE port OR a RANGE of ports.
’hexaddr’
is the address of the port, it must be in hexadecimal,
suffixed with an optional ’h’ or ’H’.
Single port examples:- (old method:- still works)
/A5,1A0 COM5 is at 01A0 hex.
/A5,1A0H COM5 is at 01A0 hex.
/A12,200 COM12 is at 0200hex.
When a range of ports is given, hexaddr specifies the address of
the first port in the range, subsequent ports are at 8 byte
increments. Range port examples:- (new method:- less typing,
easy to understand)
/A8-A10,1B0
port range is COM8 to COM10 starting at 1B0 hex
COM8 is at 1B0hex,
COM9 is at 1B8hex,
COM10 is at 1C0hex.
/A13-,300 range is COM13 to maxport, starting at 300hex
COM13 is at 300hex,
COM14 is at 308hex,
COM15 is at 310hex,
COM16 is at 310hex. assuming NewCOM.sys
NEWCOM.SYS supports up to 16 COM ports.
NEWCOM24.SYS supports up to 24 COM ports.
NEWCOM32.SYS supports up to 32 COM ports.
Chapter 2 Page 23