Korg EX-800 Service Manual

2. MIDI IMPLEMENTATION
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1 Transmission data
Transmittable data consist of system exclusive messages
only. These are used for the computer dump function.
System Exclusive Messages
NOTE:
1. Data error message is sent if there is a check sum er
ror during memory load. Error message: (F0h, 42h,
21 h. 01 h, 20h, F7h)
2. The request sent by the computer must be: F0h, 42h,
21 h, 01 h, 10h, F7h (where V means hexadecimal).
Memory data is then output in the order: F0h, 42h,
21 h, 01 h, memory data check sum, F7h —
2 Reception data
Channel Messages
NOTE:
1. CHANNEL NUMBER:
nnnn = 0H-FH (ch1 y-ch16)
2. NOTE NUMBER:
kkkkkkk = 36~96
If received data is outside of this range, it will be trans
posed to nearest note of the same name.
3. Negative numbers are ignored.
4. OMNI ON/OFF is always interpreted as being accom
panied by POLY-ON.
Separate POLY-ON or MONO-ON messages are
ignored.
5. ppppppp = 0~127 (PROGRAM NUMBER)
However, if number exceeds 63 then subtract 64 to find
value as interpreted.
Example:
74 = 10
64 = 0
6. VOLUME CONTROL:
vvvvvvv = 7Fm is the loudest volume.
decreases as value approaches OOh.
System Real Time Messages
Volume
CAUTION:
ACTIVE SENSING
If FEh (STATUS 11111110) is ever received, then another
FEh or other MIDI data must be received every 300ms,
otherwise the voices will be turned off. If FEh is never
received then operation will continue as usual.
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Korg EX-800 Specifications

General

Brand	Korg
Model	EX-800
Category	Synthesizer
Language	English