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Eagle 450 Installation and Technical Manual, Rev. 00
Appendix B -
Super I/O
Super I/O is designed to significantly increase character output for all serial ports using the A31810.IDV
or AM318.IDV driver. This includes all AM-318-xx board serial I/O ports, as well as the Eagle 450's
eight on-board serial ports. The more terminals you have on your system performing character output,
the more you will benefit from Super I/O.
The AM-314 board does not support Super I/O.
Super I/O handles character output in a much more efficient manner than any other previously released
AMOS serial port driver, which greatly reduces the load on the CPU and makes more CPU cycles
available for other tasks.
In earlier versions of AMOS, Super I/O was a separate, optional feature. In all versions of AMOS
supported on the Eagle 450, Super I/O is included in the operating system.
DISABLING SUPER I/O
For most Super I/O-compatible serial ports, you will always want to have Super I/O enabled. However, if
you have an application program that does not run properly on a Super I/O-enabled serial port, you can
disable Super I/O. You can disable Super I/O on one or more AM-318-xx boards, but you can't disable
Super I/O on an individual serial port.
Disabling Super I/O on All I/O Boards
If the application causing problems is one you run infrequently, you can temporarily disable Super I/O
on all your AM-318-xx ports by making the following changes to your initialization file:
As with any change to the initialization file, use proper caution—make your changes to a copy of
the initialization file, not the file you use to boot the computer.
1.
Find the first TRMDEF statement that uses the A31810.IDV interface driver—this is usually port
0. Disable Super I/O by adding /O (that's an "O", not a zero) to the statement. For example,
change:
TRMDEF TERM1,A31810=0:19200,AM65,100,100,100
to
TRMDEF TERM1,A31810/O=0:19200,AM65,100,100,100
2.
If any ports use the AM318.IDV interface driver, find the first TRMDEF statement using it.
Make the same change to it: add /O after
AM318
.
3.
Save the file and MONTST using it to disable Super I/O.