Hardware reference guide

Multiport Serial I/O Adapter Hardware Reference Guide 4
1 2 3 4 Base Address
OFF OFF OFF OFF 200
ON OFF OFF OFF 220
OFF ON OFF OFF 240
ON ON OFF OFF 260
OFF OFF ON OFF 280
ON OFF ON OFF 2A0
OFF ON ON OFF 2C0
ON ON ON OFF 2E0
OFF OFF OFF ON 300
ON OFF OFF ON 320
OFF ON OFF ON 340
ON ON OFF ON 360
OFF OFF ON ON 380
ON OFF ON ON 3A0
OFF ON ON ON 3C0
ON ON ON ON 3E0
ISA Setup
All ISA Adapters must be assigned a unique I/O base address. This can be
accomplished by the use of ISA Plug and Play (PnP) or the I/O Base
Address Switch S1 (see Figure 1 and Table 1).
If PnP is not supported by your operating system, or if you are unsure,
place the PnP Jumper (JP1) in the position closest to switch S1. This will
disable PnP and enable the sixteen position I/O Base Address switch (see
Table 1 below).
If multiple ISA Adapters are installed in the same system, a different I/O
base address must be assigned to each adapter. (This is automatically
accomplished if PnP is utilized.) This procedure should be performed
before the adapter is physically installed.
PCI Setup
Peripheral Component Interconnect (PCI) system architecture has a design
feature termed Plug and Play. This feature automatically detects, identifies
and configures the
currently installed devices each time the system is
booted. Therefore, whenever an adapter is installed (or removed) in a PCI
system, the adapter is recognized and configured immediately upon restart.
Table 1. Switch S1 Is Shown Set For I/O Base Address 240H