14
Configuring Your Software
1. Turn on your computer (and modem if you have an external).
2. Install your communications software (refer to the software's documentation).
3. If you have an external modem, follow this step. Otherwise, skip to step 4.
· From DOS, change to your Windows directory and type MSD.
· Type C for COM Ports. Find the line UART Chip Used and match it with the COM Port
column to which you attached your modem to determine the UART type (usually 8250,
16450, or 16550). Remember your UART type for step 5.
4. Start your communications software program.
5. Set the software's serial port (baud) rate based on your UART type. Also, fix or lock the serial port rate (if
referred to as autobaud, select OFF).
UART Serial Rate
16550 115.2K or 57.6K bps
16450 38.4K bps
8250 19.2K bps
Note: All internal Sportsters have a 16550 UART on the modem. Some software packages offer 12.000 bps
as a serial port rate. Do NOT select this option. Your modem will not function properly with that setting.
6. Specify the serial (COM) port used by the modem in your communications software if working in
DOS. The default configuration on internal modems is COM 2, IRQ 3, unless you have changed it.
For external modems, check the serial port to which your modem is connected.
7. Specify your modem's flow control setting: RTS/CTS for hardware flow control (highly
recommended) or XON/XOFF for software flow control. You should disable the flow control
method you are not using.