Problems using Peak with a SMDI sampler (via SCSI)
Use high-quality, tested SCSI cables that are as short as possible.
Make sure that the problem is indeed a SCSI problem and not a MIDI problem. If you find that it is a SCSI problem, disable the USE- SCSI checkbox in the Options menu. This will force all transfers to use MIDI only. If you can transfer samples back and forth with your Ensoniq sampler using only MIDI, then the problem is SCSI related.
Check for SCSI ID conflicts. (Ensoniq samplers have a SCSI ID of 3.) Make sure every SCSI device in the SCSI chain has a unique ID.
Check for problems with SCSI termination. For more information, consult the manuals of your SCSI devices. SCSI termination should exist on each end of the SCSI chain: one termination inside the Macintosh (usually this is the case), and one termination on the last SCSI device in the chain. Most ASR and EPS models are terminated.
Reduce the number of components in your SCSI chain. If you have more than one device connected between the sampler and your Macintosh, try removing devices to determine if this affects the errors.
Change the power-up order. Try turning all SCSI devices on first, including the sampler. Once the devices have powered up, turn on the Macintosh. If this does not help, try turning on your other SCSI devices, then the Macintosh, and finally the sampler.
PowerMac users with System 7.5.5 can try using the PowerPC Interrupt Extension. System 7.5.3 changed some interrupt priorities, resulting in problems such as inexplicable hangs and momentary freezes. The PowerPC Interrupt Extension fixes one known cause of “long interrupt latencies” – basically, where the computer sits around waiting for something more important to happen. It’s difficult to say what specific problems this extension will fix since so many programs can be affected, but reports indicate the extensions fixes formerly-reproducible problems with some games, telecommunications software, and audio/video editing tools. This extension requires a Power Macintosh and System 7.5.5.
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