IBM 6151 Maintenance And Service Manual page 603

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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
OtT On OtT On OtT 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
OtT On OtT On OtT On OtT 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 9-056-3