CompuServe Thread

Steven, No, SCSI ports only provide the necessary interface to the SCSI BUS, they do NOT carry drive power. To add a HD, you'll need to provide power to the drive yourself, normally, this is done simply by also buying an external power supply/enclosure for the drive. They normally run about $100 to $125. As an alternate, if you're hooking up to an A2000, you could simply get a drive power extension cable for about $6 and run it out one of hte back slots and just sit the drive on your desk "bare". Don

steven, I'm currently running 2 or 3 hd's off my trumpcard pro on an A1000 w/ lucas/francis system installed. Don Curtis's reply to you was correct but there's more to it. You need to become familiar with the setting of SCSI device number jumper blocks which are on all SCSI drives. You need to set the device number uniquely for each drive in the SCSI daisy chain in order to get proper behavior of the second and additional drives on the SCSI bus. In addition you must remove the 'terminator' resistor packs (found in various styles and types on different manufacturers' drives) from all but the 'last' drive on the SCSI bus. That info plus Don's hint on the power box should get you going. Many times when you purchase a bare drive it doesn't come with info on the jumper/SCSI device number settings. Usually there are isolated blocks of 3 jumpers, which correspond to a binary number from 0 to 7. If you already have one SCSI HD it's probably set to Device #0 (usually this is indicated by having NONE of the three jumpers connected). To add a second drive, usually all you have to do is jumper 1 of the 3 jumper pin set and you'll have either SCSI device #1, #2, or #4 depending on how they are arranged on your drive. Use the SCSI_Lister program to have your Amiga scan the SCSI bus and it'll tell you what SCSI number resulted from this trial and error approach, then you'll know the ordering of the 3 pins in the SCSI device jumper block. More questions I'll try to answer. Need drives? Cheap? Call!