User manual

Appendix E Using Your PC-DIO-96 (Non-PnP) Board

The base I/O address for the PC-DIO-96 is determined by the switches

at position U16 (see Figure E-2). The switches are set at the factory for

the I/O address hex 180. With this default setting, the PC-DIO-96 uses

the I/O address space hex 180 through 19F.

Note: Verify that this space is not already used by other equipment installed in

your computer. If any equipment in your computer uses this I/O address

space, you must change the base I/O address for the PC-DIO-96 or for the

other device.

Each switch in U16 corresponds to one of the address lines A9 through

A5. Thus, the range for possible base I/O address settings is hex 000

through 3E0. Base I/O address values hex 000 through 0FF are reserved

for system use. Base I/O values hex 100 through 3FF are available on

the I/O channel. A4, A3, A2, A1, and A0 are used by the PC-DIO-96 to

decode accesses to the onboard registers. On the U16 DIP switch, press

the side marked OFF to select a binary value of 1 for the corresponding

address bit. Press the other side of the switch to select a binary value of

0 for the corresponding address bit. Figure E-3 shows two possible

switch settings. The black side indicates the side of the switch that is

pushed down.