I encounter problem when calling HALAssignSlotResources ( for PCI cards), particularly under WIN2000 service pack 2 and above. It returns 0xc000005 (status access violation) under certain situation. The call is OK for NT4 and WIn2000 service pack 1. Can anyone help? Regards, TC ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/