Alesis HR-16 Service Manual page 35

1) Step data 0-99 indicate pattern steps. Step data 100-250 indicate tempo change of 50% to 200%,
respectively. Step data of 251-254 are not accessible from the front panel, but would correspond to
tempos of 201% through 204%.
2) There cannot be more than 255 steps in a song.
3) Adding the number of bytes in a song to the absolute pointer of a song should point to 1 byte past the
last byte of the song.
01H SELECT PATTERN OR SONG
This command is used to select a pattern or song.
0000000xB
0nnnnnnnB
7FH
02H RECORD BUTTON
This command is used to "press" or "release" the RECORD button. It will affect whether the HR-16
will go into play or record when it receives a MIDI START command. It does not affect what will
happen when pressing play from the front panel.
0000000xB
F7H
03H QUANTIZE AND SWING MODES
This command is used to set the quantize and swing modes.
000nnnnnB
F7H
04H SET PATTERN LENGTH
This command is used to change the length of the current pattern.
0t0ccccbB
0bbbaaaaB
F7H
05H COPY PATTERN, DRUM, OR SONG
HR-16/HR16B Service Manual 1.00
x: 0=pattern, 1=song
n: 0-99 = pattern or song number
EOX
x: 0=Record released, 1=Record pressed
EOX
................................................................................................. 0000xxxxB xxxx: 0-9,
quantize mode 0=1/4, 1=1/6, 2=1/8, 3=1/12, 4=1/16, 5=1/24, 6=1/32,
................................................................................................. 7=1/48, 7=1/64, 9=1/384
nnnnn: 0-24 = swing amount, 0=50%
EOX
t: 0=change end, 1=change top
ccccbbbbaaaa: 3 digit BCD length in beats (c=msb, a=lsb)
EOX
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