Owner's manual
© Sealevel Systems, Inc.  - 3 - 
DIO-16 User Manual
Card Setup 
The DIO-16 contains several jumper straps for each port that must be set for proper 
operation. 
Address Selection 
The DIO-16 occupies 4 consecutive I/O locations. The DIP-switch (SW1) is used to 
set the base address for these locations. Be careful when selecting the base address 
as some selections conflict with existing PC ports. The following table shows 
several examples that usually do not cause a conflict. 
Address Binary  Switch Settings 
    1 2 3 4 5 6 7 8 
100-104 01 0000 00xx  Off On On On On On On On 
104-108 01 0000 01xx  Off On On On On On On Off 
200-204 10 0000 00xx  On Off On On On On On On 
280-283 10 1000 00xx  Off On Off On On On On On 
284-287 10 1000 01xx  Off On Off On Off On On Off 
2EC-2EF 10 1110 11xx  Off On Off Off Off On Off Off 
300-303 11 0000 00xx  Off Off On On On On On On 
320-323 11 0010 00xx  Off Off On On Off On On On 
388-38B  11 1000 10xx  Off  Off  Off  On  On  On  Off  On 
3A0-3A3  11 1010 00xx  Off  Off  Off  On  Off  On  On  On 
3A4-3A7  11 1010 01xx  Off  Off  Off  On  Off  On  On  Off 
Address Selection Table 
The following illustration shows the correlation between the DIP-switch setting and 
the address bits used to determine the base address. In the example below, address 
300 is selected as the base address. Address 300 in binary is XX 11 0000 00XX 
where X = a non-selectable address bit and address bit A9 is always a 1. 
1 2 3 4 5 6 7
ON
OFF
A9 A2
8
DIP-Switch Illustration 
Note: Setting the switch ‘On’ or ‘Closed’ corresponds to a ‘0’ in the address, while 
leaving it ‘Off’ or ‘Open’ corresponds to a ‘1’. 










