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REW
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Introduction
1.1General Functions
The RD-70 can playback and record messages generated by musical
instruments equipped with a MIDI interface.
The messages are made permanent by using back-up floppy-disks (3.5", 2DD
and 3.5", HD) and storing the data as a standard MIDIFILE.
The RD-70 cannot generate sounds itself, it can only handle MIDI information
needed for the sounds to be produced by other instruments (keyboards,
expanders, drum-machines, etc.). It must therefore always be connected to
these devices by means of the MIDI connectors.
Stored data can be re-transmitted to other MIDI devices in order to
automatically reproduce the original performance.
No particular type of MIDI device is needed for either recording or
reproduction: the user can choose the instrument that he finds most
convenient without any restrictions.
There is no limit to the number of MIDI devices that can be simultaneously
controlled by the RD-70.
1.2Memory
The RD-70 uses the direct-to-disk memory system.
This means that MIDI messages received from external devices connected
through MIDI IN are continuously recorded as they arrive on the floppy disk, in
the standard MIDIFILE 0 format (see section 1.4).
The RD-70 consequently has a small buffer memory used for momentary
storage of incoming messages which are then immediately unloaded onto the
physical storage medium, ie. the floppy disk.
This system allows the machine to record continuously for up to 192,000
notes!
Once recording has been completed, the RD-70 is also able to immediately
begin song playback through the external devices.
RD-70
PLAY
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viscount
professional
SONG
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PROGRAM
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RANDOM
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SINGLE
REPEAT
STANDBY
INTRODUCTION
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