IBM 6151 Maintenance And Service Manual page 607

Switch Settings
Refer to the drawing on the next page to locate the switch banks;
then use the charts below to set the switches on your adapter.
Note: Only one asynchronous adapter can use an address range.
Each asynchronous adapter can be set to any of the four address
ranges.
Switch Bank 1 - Interrupt Level Selection
9 10 11
Off On Off On Off On
Switch 1 X X X
Switch 2
X X X
Switch 3 X X X
Switch Bank 2 - Address Range Selection
1
2
3 4
Off On Off On Off On Off On
Switch 1
X X X X
Switch 2
X X X X
Switch 3
X X X X
Switch 4
X X X X
Switch 5
X X X X
Switch 6
X X X X
Switch 7
X X X X
Switch 8 X X X X
(6/88) Adapters 9-059-3