by User's Guide issued in the age of Windows 3.1
Power Window 805i (Canopus) 

C bus graphic accelerator board with S3 86C805i.4 stations on the board 
1 dip switch. 

Standard I / O port address: 
06D0-06DF, 16D0-16DF, 26D-26DF, 36D0-36DF 
46D0-46DF, 56D0-56DF, 66D-66DF, 76D0-76DF 
86D0-86DF, 96D0-96DF, A6D-A6DF, B6D0-B6DF 
C6D0-C6DF, D6D0-D6DF, E6D-E6DF, F6D0-F6DF 

The second digit from the left of this I / O port address, "6" is a quadruple dip switch 
It is possible to change between 1-7 by setting. 
Standard setting of 4 stations dip switch is ON-OFF-OFF-ON 
The dip switch supports binary numbers with ON = 0 and OFF = 1.For example, 
ON-OFF-OFF-ON is "0110", which is "6" in hexadecimal. 

Software called "PWIO.EXE" to check how to set the dip switch 
To come.This is done before setting the board to the PC.