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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
Card Setup
Address and IRQ Selection
The COMM+850.LPCI
is automatically assigned resources by your motherboard BIOS. Only the I/O address
may be modified by the user.
Adding or removing other hardware may change the assignment of I/O addresses and IRQs.
Clock Modes
The COMM+850.LPCI
employs a unique clocking option that allows the end user to select from divide by 4
and divide by 1 clocking modes. These modes are selected at Header J1.
To select the Baud rates commonly associated with COM: ports (i.e.,
2400, 4800, 9600, 19.2, … 115.2K bps )
place the jumper in the divide by 4 mode (silk-screen D4) position.
To select the maximum data rates up to 460.8K bps place the jumper in the divide by 1 (silk-screen D1)
position. Please refer to the following page for these additional data rates.
Baud Rates and Divisors for the 'D1' Mode
The following table shows some common data rates and the rates you should choose if using the adapter
in the ‘D1’
mode.
For this Data Rate
Choose this Data Rate
1200 bps
300 bps
2400 bps
600 bps
4800 bps
1200 bps
9600 bps
2400 bps
19.2K bps
4800 bps
57.6 K bps
14.4K bps
115.2 K bps
28.8K bps
230.4K bps
57.6 K bps
460.8K bps
115.2 K bps
