0x378 is probably routed to the onboard LPT by the BIOS. However, I wouldn't be surprised if those PCI cards used the same IO port protocol, only at some diffe

0x378 is probably routed to the onboard LPT by the BIOS. However, I wouldn't be surprised if those PCI cards used the same IO port protocol, only at some different address assigned in the standard way with PCI BARs.