DIGITAL INPUT/OUTPUT CARD IOD-144 USER MANUAL
4-2
CAUTION
Review the address selection reference table
carefully before selecting the card address. If the
addresses of two installed functions overlap you
will experience unpredictable computer behavior.
To set desired board address, refer to the illustrated Board Address setup program on the
Utility diskette provided with the card. Type the desired address in hexadecimal code and
the graphic display shows you how to set the ADDRESS SETUP switches. These switches
are marked A5-A9 and form a binary representation of the address in negative-true logic.
Assign '0' to all ADDRESS SETUP switches turned ON, and assign '1' to all ADDRESS
SETUP switches turned OFF.
The following example illustrates switch selection corresponding to hex 2C0 (or binary 10
110 xxxxx) The "xxxxx" represents address lines A4, A3, A2, A1, and A0 used on the card
to select individual registers at the PPIs. See Section 6, PROGRAMMING.
Hex Representation 2D
Conversion Multipliers 21842
Binary Representation 10110
Setup OFF ON OFF OFF ON
Switch ID A9 A8 A7 A6 A5