
CIO-CTR10 User's Guide Installing the CIO-CTR10
10
Figure 1. Base address switches
In the default configuration shown in Figure , addresses 9 and 8 are DOWN, and all others are UP.
Address 9 = 200 hex (512 decimal) and address 8 = 100 hex (256 decimal); when added together they equal
300 hex (768 decimal).
Disregard the numbers printed on the switch
When setting the base address, refer to the numbers printed in white on the printed circuit board.
PC I/O addresses
The CIO-CTR10 Base switch can be set for an address in the range of 000-3E0, so it should not be hard to find
a free address area for your CIO-CTR10. If you are not using IBM prototyping cards, or some other board
which occupies these addresses, then 300-31F HEX are free to use. Addresses not specifically listed, such as
390-39F, are free.
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