Appendix C - Super I/O; Disabling Super I/O; Disabling Super I/O On All I/O Boards - Alpha Microsystems AM-6000 Owner's Manual

Super I/O is designed to significantly increase character output for all serial ports using the AM318.IDV
or AM359B.IDV drivers. This includes all AM-359 board serial I/O ports, as well as the AM-6000's
four on-board serial ports. The more terminals you have on your system performing character output, the
more you will benefit from 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 AM-6000, 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, it is
possible to disable Super I/O. You can disable Super I/O on one or more AM-359 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-359 ports by using the following procedure:
1. Create a copy of your system initialization command file; type:
LOG 1,4
COPY TEST.INI=AMOS32.INI
2. Use AlphaVUE to modify your TEST.INI file. Locate the first AM-359 TRMDEF statement.
Disable Super I/O by adding /O (that's an "O", not a zero) to the first AM-359 TRMDEF
statement. For example, change:
TRMDEF TERM2,AM359=0:19200,AM65,100,100,100
TRMDEF TERM2,AM359/O=0:19200,AM65,100,100,100
3. Save the file and leave AlphaVUE. The use the MONTST command to boot with the test
initialization file, as described in Chapter 5.
Once you have completed running the program that exhibits problems under Super I/O, you can reboot
your computer using the standard system initialization command file, which will reactivate Super I/O.
AM-6000 Computer Owner's Manual, Rev. 00

Appendix C - Super I/O

RETURN
to
RETURN