YMF721 Datasheet, PDF (34/41 Pages) LSI Computer Systems – FM + Wavetable Synthesizer LSI

YMF721
3. System Realtime Message
3-1. System Reset <FFH>
Notes of all channels are damped.
Controllers of all channels become default value.
3-2. System Exclusive Message
3-2-1. GM System Level 1 ON
<F0 7E 7F 09 01 F7>
3-2-2. XG System ON <F0 43 1n 4C 00 00 7E 00 F7>
When this message is received, Notes of all channels are damped.
All setting value become default without MIDI Master Tuning.
n : Device No. Don’t care.
3-2-3. MIDI Master Volume <F0 7F 7F 04 01 ss tt F7>
When this message is received, all volumes are set.
Data range of ss and tt is 0 to 127 (00H to 7FH). However, the value of tt is only valid, and ss is
ignored.
00H : Minimum volume, 7FH : Maximum volume
3-2-4. MIDI Master Tuning <F0 43 1n 27 30 00 00 xm xl cc F7>
n : Device No. Don’t care.
When this message is received, pitch of all channel are changed at the same time.
Data range of xm and xl is 0 to 127 (00H to 7FH). However, 8 bits value (0 to 255), that is composed
of m and l, is valid range.
128 (ml=80H) : Center, ±1 : up/down by 1¢
This parameter is ignored at drum kit (channel 10 and bank 127).
And, this parameter is not reset by System Reset, GM System Level 1 ON and XG System ON.
3-2-5. Power Down Command <F0 43 79 04 0E 6D 7F>
3-2-6. Internal Micro-Processor Reset Command <F0 43 79 04 0F 6B 7F>
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July 10, 1997