It is fixed in current drivers
PCMCIA SCSI Host Adapter Issues
adaptec1480 scsi & RH6.2 (matthias caraco)
An aic7xxx driver update broke the APA1480 (David Hinds)
SlimSCSI 1480 w/ Red Hat 6.2: I/O port conflict (Eric Smith)
Date: 2000, Jun 06
From: David Hinds <firstname.lastname@example.org>
It was fixed in 3.1.14.
to: "It is fixed in current drivers"