I-Bus IBC 2600, User Manual

Page: 101 / 140

Chapter 7 - Peripheral Setup
7-3
IBC 2600 User’s Guide
Available options are:
Auto
Disabled
3F8H
2F8H
3E8H
2E8H
When this option is set to Auto, AMIBIOS also attempts to avoid address
conflicts. If the off-board serial ports are configured to specific starting I/O
ports via jumper settings, AMIBIOS configures the on-board serial ports
to avoid conflicts.
AMIBIOS checks the ISA Bus for serial ports. Any off-board serial ports
found on the ISA Bus are left at their assigned addresses. Serial Port 1,
the first on-board serial port, is configured with the first available address
and Serial Port 2, the second on-board serial port, is configured with the
next available address. The default address assignment order is 3F8H,
2F8H, 3E8H, 2E8H. Note that this same assignment order is used by
AMIBIOS to place the active serial port addresses in lower memory
(BIOS data area) for configuration as logical COM devices.
After all addresses have been assigned, any remaining on-board serial
ports are disabled.
For example, if there is one off-board serial port on the ISA Bus and its
address is set to 2F8H Serial Port 1 is assigned address 3F8H and Serial
Port 2 is assigned address 3E8H. Configuration is then as follows:
COM1 - Serial Port 1 (at 3F8H)
COM2 - off-board serial port (at 2F8H)
COM3 - Serial Port 2 (at 3E8H)
OnBoard Parallel Port
This option enables the parallel port on the SBC and establishes the
base I/O address for the port.
The Setup screen displays the system option:
OnBoard Parallel Port Auto