TI PCI-1225 Card Bus Controller does allocate IRQs for PC Cards under Windows XP
Posted on 2005-04-19
I have an ActionTec PC-750 PC Card adapter (TI PCI-1225 controller) that is installed under Windows XP. It will not allocate an ISA IRQ to PC Cards that are inserted. (I have plenty of free ISA IRQS available). Instead, it allocates the same PCI IRQ allocated to the card bus controller, and thus gives me Code 12 error for every type of card I install. The XP management windows will not permit me to move the IRQ. An example is the Card Bus Controller has IRQ 19, and when a FLASH Card is inserted, XP tries to allocate 19 to it and fails.
I have contacted Microsoft and here's all the fixes we've tried:
1)I've upgraded my BIOS to no avail. (Gigabyte GA7N400L1 BIOS Rev F12)
2)I've moved the PC-750 to all available slots in my machine with the same result.
3)I've rebuilt Windows XP from scratch and the same result occurs.
The problem is something to do with Windows XP, as I have Windows 2000 installed on a seperate drive on the same system and the PC-750 works fine. I've contacted the folks at Actiontec and they give me the line that it should work as is. So this leaves me with little confidence they have a clue or if they do, they're not saying.
Other than this problem XP works fine.
Sr. Test Engineer
VT Miltope Corporation