Serial PCI Cards: Unable to change I/O Address
"I cannot change the I/O address to 0278 - 03F8 on Windows NT 4."
The Product does not support port remapping. Port remapping is needed
on Windows NT 4 to use the legacy ISA I/O addresses. Windows 9x, 2000
and XP support port remapping internally.
Following cards support port remapping:
157636 PCI 1 port serial card, LAVA chipset
157629 PCI 2 port serial, LAVA chipset