Scsi ?? Normally 7, from jumper setting 0 to 6 ... shoud be enough for most computers I think ... can not assure you that a scsi cdrom will be detected. I have encountered an Evolution.scsi controller that just refused to see any scsi cdrom, with or without turboboard on an A500, even on an A2000 with Zorro2 Evolution card. Have no experience in GVP's ...