IBM RT PC 10 Hardware Maintenance And Service page 276

Switch Settings
Use the diagram 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·'
Interrupt
Level
9
10
11
Switch Bank 2
Address.Range
2
1 14 \ , , ,
3
:.:~~~~~~~~
, 1.].4·\···,·, ,
:.:~~~~~~~~
U]
2
Four
r::l
10-Pin
ll1
3
Connectors
Adapters 9-21