Technical information

Serial Solutions What To Do First
known to the Serial Solutions device driver.
The i/o address, interrupt and handshake used must be
specified in the CONFIG.SYS file on the NEWCOM.SYS entry
line.
Address Selection.________________
Each serial port has its address set by jumpers or dip
switches on the interface card and occupies 8 i/o consecutive
addresses. As explained in the previous section, com ports
COM1- COM4 are at standard addresses and so do not need to
be explicitly passed to Serial Solutions.
Addresses for COM5 onwards must be passed to the
NEWCOM.SYS driver by the /Ar,add parameter.
Where r specifies the COM ports, r may be a single port or a
range of ports.
And addr is the address in hexadecimal, suffixed with an
optional ’h’ or ’H’. For example:-
/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, addr specifies the address of the
first port in the range, subsequent ports are at 8 byte increments.
For example:-
/A8-10,1B0 range of ports is COM8 to COM10 starting at
1B0hex
COM8 is at 1B0hex,
COM9 is at 1B8hex,
COM10 is at 1C0hex.
/A13-,300 range is COM13 to max supported starting at 300hex
COM13 is at 300hex,
COM14 is at 308hex,
COM15 is at 310hex,
COM16 is at 310hex. assuming NewCOM.sys
Always specify the addresses of port COM5 onwards using the
/A command in the CONFIG.SYS file.
Page 6 Chapter 1