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4
Interface Installation and Configuration
Configuring the Interface
As shown in the figure, there are two sets of configuration switches on the interface card. One
determines the interface select code, and the other sets the hardware interrupt level. To set the
switches, use a ball-point pen or other pOinted object to depress the left or right side of the
switch rocker. Be sure the rocker is fully seated in its proper position. When the right side of any
rocker is fully depressed, the switch is open, and a binary ONE is programmed for that bit. If the
rocker is fully seated, left side down, the switch is closed and a binary ZERO is programmed
instead. Note the position of the most significant (MSB) and least significant (LSB) bits on each
switch. The switches are shown in their factory-set (default) positions.
-
=
-
- - -
- -
.
LSB
=
INTERRUPT
o
LEVEL
I~l r~
F1
11 1
0'0
~ ~
l
~
W
~--+---~
1
§s
0
25
MSB
SELECT
CODE
4
~~-
..
-
-
=
- -
-
HP 98625A Disc Interface Configuration Switches
Default Configuration Settings
Configuration Switch Function
Interface Select Code
Hardware Interrupt Level
Default Value
14
6
Allowable Range
8 thru 31
3 thru 6
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