IBM RS/6000 - Manual (Page 140)

The following table shows the supported interfaces for each port.
The maximum cable lengths that are supported for the various communications
protocols are described in the following table.
Table 19. Physical Interfaces on 4-Port Multiprotocol Interface Cable
Port Number Supported Interfaces
# 0 EIA-232 EIA-422 V.35 X.21
# 1 EIA-232 - V.35 -
# 2 EIA-232 EIA-422 - -
# 3 EIA-232 - - -
Table 20. Maximum Cable Length
Protocol Length (meters) Length (feet)
RS-232 15.2 50
V.35 15.2 50
RS-422 122 400
X.21 122 400
6.6.2 DIP-Switch Setting
The 4-Port Multi-Protocol ISA Adapter has a 10-position DIP switch which is used
to set the following parameters:
You do not need to set every DIP switch on the adapter to configure it. The only
DIP switches you have to change are those referring to
Interrupt Level and Bus I/O
Address.
The DIP switches indicating the Memory Size, the Edge Connector and the
Bus-Width can be left in the default position set by the factory.
The following table shows the parameters values you may want to select in order to
define the Interrupt Level and the Bus I/O Address for a conflict-free configuration
of your first, second and third 4-Port Multiprotocol adapters.
Table 21. DIP-Switches on 4-Port Multi-Protocol ISA Adapter
Parameter Switch Number(s)
Interrupt Level 1-2-3
Memory Size 4
Bus I/O Address 5-6-7-8
Edge Connector 9
Bus Width 10
116 Introduction to PCI-Based RS/6000 Servers