Kontron 104-AD128, User Manual

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Address Selection 2-5 104-ADIO128 (AD128) User’s Guide
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Address Selection
The card base address on the I/O bus is set by JUMPERS next to the PC/104 connector. The jumper
posts are marked A5 through A9 and A5 is the least significant bit of the address. The base
addresses can be selected anywhere within the I/O address range 100-3FF provided that they do
not overlap with other functions. The FINDBASE software utility provided on CD with your card
will help you select a base address that does not conflict with other assignments. If in doubt,
refer to the following table for a list of standard address assignments.
In order to configure the desired address, the hexadecimal address must be converted to a
binary representation.
For example, as illustrated below, switch selection corresponds to hex
2D0 (or binary 10
101xxxxx).
The "xxxxx" represents address lines A4 through A0 used on the card to select
individual registers as described in the Chapter 5, Programming of the manual.
Please note that "1" = "off" and that "0" = "on."
Review the Address Selection Table carefully before selecting the card address. If the addresses
of two installed functions overlap, you will experience unpredictable computer behavior. If you
have doubts concerning available addresses in your particular computer, use the FINDBASE
utility provided to determine available addresses.
The following table provides a convenient reference for all address jumper configurations. ON
indicates the jumper is installed.
Hex Representation 2 D
Conversion Factors
2 1 8 4 2
Binary Representation
1 0 1 1 0
Switch Setting
Off On Off Off On
Switch Label A9 A8 A7 A6 A5