Specifications

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SP-3 SCSI Interface Manual
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ASR-10 Commands For Use With Storage Devices
Selecting the Storage Device
The CHANGE STORAGE DEVICE command is used to select the device that will be used to load
and save files. Only one device can be selected at a time; that is, if you are looking at files on the
SCSI Storage Device, you won’t see any indication of the files on the floppy disk in the floppy
drive. There are nine selections available in the Change Storage Device command. The first
selection is the floppy disk drive with an ID of FLOPPY. The next eight selections are for SCSI
devices 0 through 7.
To change the selected storage device:
1. Press (COMMAND), then C~Y~TEM-MIDI) .
2 Scroll right until the display shows CHANGE STORAGE DEVICE and press (ENTER-YES).
3. The display shows either LOAD DEVICE = SCSI # (O-7) or LOAD DEVICE=FLOPPY. Use
the (p) and m buttons to scroll to the ID number of the desired SCSI Storage Device, or
FLOPPY, then press (ENTEFPYES) .
It is important to remember to press (ENTER-YES) for the selection to actually take place. The
display will show DISK COMMAND
COMPLETED briefly when the SCSI storage device has
been selected successfully. If the display shows INVALID LOAD DEVICE or UNCONNECTED
SCSI DEV, then there is some problem with your connection to the SCSI Storage Device (the
Storage Device is not turned on, the cable is disconnected, the Storage Device has a different ID
setting, etc.). Check all connections and settings carefully before continuing.
Note for Macintosh Computer users
If the message NOT AN ASR SCSI DEV appears, then the device ID number you have selected
may be a Macintosh formatted Storage Device.
You cannot select this device as an ASR-10
storage device, except with the formatting procedure.
Be very careful to avoid inadvertently
erasing your Macintosh SCSI Storage Device.
Formatting a SCSI Storage Device
Formatting a SCSI Storage Device is similar to formatting a floppy disk on the internal disk drive.
It prepares the disk to have ASR-10 files saved to it and loaded from it. It is by nature a
destructive process because it erases all the information that was previously on the disk and
replaces it with new information. The formatting procedure should always be performed very
deliberately so that you do not accidentally lose important information by formatting the wrong
disk.
Interleave: You will have the option of changing the Interleave number when initiating
formatting. What does the Interleave number mean? It attempts to match the speed of the SCSI
Storage Device with that of the ASR-10. It is usually expressed as a ratio, the selected number to
1. Some SCSI Storage Devices may be able to make information available to the ASR-10 at a
higher rate than the ASR-10 can receive it. If the ASR-10 is not ready to receive the information
the first time it is sent, then the SCSI Storage Device must do one full revolution of its disk before
it can send the information again. This can cause the SCSI Storage Device to take a longer time to
load.
What number is best? Start out with the default value, INTERLEAVE=O. This will use the
default ratio for your particular SCSI Storage Device, which is usually 1 to 1. Therefore, an
INTERLEAVE value of 0 or 1 will generally produce the same results. Format the SCSI Storage
Device and save a sound to the device that is around 1000 blocks. It should take approximately
ENSONIQ ASR-10 Version 3 Operating System
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