At last! eCS 1.2R + ACPI + AMouse + dual-core Athlon all
working

After much fiddling around and tearing out of increasingly gray hair, I 
have my dual-core Athlon machine doing all the right things. Here is the 
setup:

Hardware:

Asus A8N-E motherboard with BIOS 1004 (deliberately backleveled to the 
oldest that supports dual-core processors)

AMD Athlon 64 X2 3800+ CPU

ATI X300 video card (PCI-Express)

Adaptec U160 SCSI adapter (PCI)

Logitech Cordless Optical Trackman

Gateway 2000 "AnyKey" programmable keyboard *with the F-keys in the 
right place*; it's a PS/2 device, but the KVM switch accepts both PS/2 
and USB devices

QVS 2-way KVM Switch

Software:

eCS 1.2R with 14.104a SMP kernel

ACPI 2.13 package (available from BetaZone to those who purchased 
Software Subscription Services)

SciTech SNAP 3.1.8 video driver

AMouse 2.79 (allows use of scroll-wheel and additional buttons on the 
pointing device)

For a long time I was unable to unREM the USBOHCD.SYS driver without the 
machine trapping just as it was about to draw the desktop -- which meant 
that I could not use AMouse, and I had to depend on the "Legacy USB 
Support" in the mobo BIOS.

Now everything is working with "Legacy USB Support" DISabled in the
mobo 
BIOS. The only disadvantage is that if I want to select a different OS 
or a different eCS / OS/2 configuration (e.g., Maintenance Partition), I 
have to reenable "Legacy USB Support" in the mobo BIOS first.

I have found that sometimes I have to switch the KVM a few times before 
the keyboard is recognized at startup or after switching to the other 
machine, but I seldom have to reboot or switch to the other machine 
anyway -- it's a 400MHz PII file server that runs automated nightly 
backups to a DDS4 autoloader and does what it's supposed to do without 
any trouble.

The one thing I haven't tried yet is the new APM stuff.

-=-