INTRODUCTION
1.1General Functions
1.2Memory
RD-70
viscount
professional
REW STOP PLAY PAUSE REC SINGLE
PROGRAM ERASE
TEMPOSONG
ENTER RANDOM
STANDBYREPEATFF
Introduction
The RD-70 can playback and record messages generated by musical
instrumentsequippedwithaMIDIinterface.
Themessagesaremadepermanentbyusingback-upfloppy-disks(3.5",2DD
and3.5",HD)andstoringthedataasastandardMIDIFILE.
TheRD-70cannotgeneratesoundsitself,itcanonlyhandleMIDIinformation
needed for the sounds to be produced by other instruments (keyboards,
expanders, drum-machines, etc.). It must therefore always be connected to
thesedevicesbymeansoftheMIDIconnectors.
Stored data can be re-transmitted to other MIDI devices in order to
automatically reproducetheoriginalperformance.
No particular type of MIDI device is needed for either recording or
reproduction: the user can choose the instrument that he finds most
convenientwithoutanyrestrictions.
There is no limit to the number of MIDI devices that can be simultaneously
controlledbytheRD-70.
TheRD-70usesthedirect-to-diskmemorysystem.
This means that MIDI messages received from external devices connected
throughMIDIINarecontinuouslyrecordedastheyarriveonthefloppydisk,in
thestandardMIDIFILE0format(seesection1.4).
The RD-70 consequently has a small buffer memory used for momentary
storageofincomingmessageswhicharethenimmediatelyunloadedontothe
physicalstoragemedium,ie.thefloppydisk.
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
beginsongplaybackthroughtheexternaldevices.
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