Play – AMT Datasouth PAL User Manual
Page 155
149
_play
N
n
Plays note n out of the 84 possible notes. n may range from one to 84, or zero.
N36 specifies middle C. N37 specifies middle C-sharp. N38 specifies middle D.
N0 specifies a rest note.
o
n
Selects octave n out of the seven possible octaves for all subsequent notes. n
may range from zero to six. o0 selects the lowest octave. o3 selects the middle
octave, which contains middle C. o6 selects the highest octave. The user must
specify the "o" in lower case.
P
n
Specifies a rest note of length 1/n. For example, P1 specifies a whole-note rest,
P2 specifies a half-note rest, L3 specifies third-note rest. n may range from one
to 64.
T
n
Selects the tempo for all subsequent notes. n specifies the number of quarter-
notes per minute. For example, T120 selects 120 quarter-notes per minute. n
may range from 32 to 255.
>
Selects the next higher octave. If the user has the highest octave selected, PAL
will ignore this instruction.
<
Selects the next lower octave. If the user has the lowest octave selected, PAL
will ignore this instruction.
#
Sharpens the preceding note. For example, C# selects C-sharp.
+
Sharpens the preceding note. For example, C+ selects C-sharp. Same as #.
-
Flattens the preceding note. For example, C- selects C-flat.
.
Lengthens the preceding note by 50%. Each subsequent "." will lengthen the
note by an additional 50%. For example, "L4C" will play a quarter-note C.
"L4C#." will play a 3/8-note C-sharp. "L4E-.." will play a 7/16-note E-flat.
The following example plays the full middle scale in a rising manner at 120 quarter-notes per
second using music legato.
(T120MLL4o3CC#DD#EFF#GG#AA#B) _play
The following example plays a two octave falling scale at 70 half-notes (140 quarter-notes) per
second using music staccato.
(T140MSL2o4BB-AA-GG-FEE-DD-C
Hints
PAL does not provide a mundane "beep" or similar operator. Instead, PAL relies upon any
operation equivalent to "(C) _play" to perform this function. The user should experiment with
different notes and durations to get the desired effect.