I was assured when I got this PC that XP puts everything ACPI-compliant on IRQ9. The control panel doesn't allow me to change the IRQ assignments on any of those IRQ9 items anyway. I can play with the resource settings on the items not on IRQ9, but those that are on IRQ9 are locked. I could go back into the BIOS and start setting things manually, but last time I did that (trying to get a joystick to work), I ran out of IRQs and couldn't have all the peripherals connected.
I'd not had any "XP blue screen of death" problems previously, not even with the two SCSI interface cards. One of those is a "bootable" SCSI, and that does its startup tests just fine.
The test routines that I have all say "all is well" apart from the Skybound, which doesn't exist according to any test I can run.
Both COM ports are in use - one for the mouse (which won't coexist on USB with the ADSL modem and the joystick - I can have any two of the three on USB), and the other for the interface to the GPS3Pilot.
The plan for later this week is to do a reinstall of XP Pro and the service packs, so I'll see what that does. I'm making very sure that everything significant is backed up first, and that I have all the "activation codes" for all the stuff on the machine first, just in case it ends up with a massive reinstall.
Psism's website says the Actiontec PC750 is OK with XP - and certainly, Jeppesen recommend it for XP. It installed with no trouble, but since I have no other PCMCIA devices here, I can't test it to see. The driver installed for it is a Windows XP one (pcmcia.sys) and is digitally signed by Microsoft.
The Helpdesk at Jeppesen confirm I have the right driver for the Skybound II - they even sent me a patch to update it to be sure - but it crashes the machine all the same.
Sounds like nobody else has been here - I'll report back after reinstalling XP and service packs.