SQ
SQ(<channel>)
10 MODE 1
20 FOR n=20 TO 0 STEP-l
30 PRINT n;
40 SOUND 1,10+n,l00,7
50 WHILE SQ(1)>127:WEND
60 NEXT
FUNCTION: The S Q function is used to check the number of free entries in the queue for a given
channel, where channel A is 1, B is 2, and C is 3. The function determines whether the channel is
active - and if not - why the entry at the head of the queue (if any) is waiting. The result is bit
significant:
0,1,2 indicate the number of free entries in the queue
3,4,5 indicate the Rendezvous state at the head of the queue (if any)
6 is set if the head of the queue is held
7 is set if the channel is currently active
Associated keywords: SOUND, ON SQ GOSUB
SQR
SQR(<numeric expression>)
PRINT SQR(9)
3
FUNCTION: Returns the square root of <numeric expression>.
Associated keywords: PRINT
STOP
STOP
300 IF n<0 THEN STOP
COMMAND: To stop execution of a program, but leave BASIC in a state where the program can be
restarted after the STOP command by using the CONT command. This may be used to interrupt the
program at a particular point when debugging.
Associated keywords: CONT, END
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