Alesis HR-16 Service Manual page 37

changed. It will be ignored if in song mode. The format is packed as 8 MIDI bytes per 7 data bytes as
described in the MIDI bulk dump explanation. The data is identical to bytes 4 through 33H in the
pattern data format.
data
F7H
09H MIDI COMMUNICATIONS TEST
This command is used to insure that bi-directional MIDI communication is functioning. If an HR-16
receives the inquiry command (F0H, 00H, 00H, 0EH, 01H, 09H, 00H, F7H), it will respond with the
response command (F0H, 00H, 00H, 0EH, 01H, 09H, 01H, F7H) only if MIDI ECHO is turned off. If
MIDI ECHO is on, the transmitting device will see the inquiry message returned to it if bi-directional
communication is functioning. This function is useful in determining that the HR-16 is ready to
receive additional MIDI information. For example, selecting a pattern, or copying a pattern can cause
a delay in which the HR-16 will ignore incoming MIDI information if its input buffer overflows. By
sending this command after a copy pattern command (command 5), and then waiting for the response
before sending any additional commands, it can be insured that the HR-16 will not miss any
information.
0000000xB
F7H
0AH ERASE PATTERN OR SONG
This command is used to erase the currently selected pattern or song. It will be ignored if in play
mode.
F7H
HR-16/HR16B Service Manual 1.00
48 data bytes, transmitted as 55 MIDI bytes
EOX
x=0=MIDI inquiry, x=1=MIDI response
EOX
EOX
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