Yamaha DX7 Operating Manual page 33

Digital programmable algorithm synthesizer

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Reception Data

This message can be received when the channel

number of reception data accords with the channel

number of the DX7.

(v : ignored)

(LS 4 bit are ignored.)

This message requests the performance data of the DX1 A-side.

ignored

(ignored)

MIDI active clock

This message usually requests reception regardless

of MIDI channel number. When this clock is

suspended longer than 666 msec (except for

receiving the bulk data), the on-going sound turned

OFF.

Bulk data of 1 voice

This message requests reception with the same

format as transmission when MIDI channel numbers

are corresponded, system information is available,

and Memory protect is off.

Bulk data of 32 voices

This message requests reception with the same

format as transmission when MIDI channel numbers

are corresponded, system information is available,

and Memory protect is off.

Parameter change

Voice parameter and function parameter request

reception with the same format as transmission when

MIDI channel numbers are corresponded, system

information is available, and Memory protect is off.

(add 94th byte and make the

complement on 2)