[Wlug] ATAPI (internal) ZIP drive

I need help! I upgraded my system to a new MLB and a faster CPU. With the new board, I can't read or write to my ZIP drive (under Linux). I have a SCSI system, with an Adaptec 78xx controller, an Adaptec RW CDROM (also ATAPI), and the ZIP drive. Kernel: 2.4.10 Under ATAPI, I've checked only use SCSI emulation and under SCSI I've checked SCSI CDROM. My board has both conventional ATA connectors and PROMISE ATA100 connectors. The CDROM is attached to the conventional primary controller as master and the ZIP is attached to the secondary controller as master. The drives are being supported as ide-scsi devices. Parameters passed in at boot time include hda=scsi and hdc=scsi Anyone have any ideas? Thanks, Skip