Basic Micro Studio Syntax Manual

Commands
The above statement is looking for the variable temp to equal 10. If the comparison is true then we
will jump to label. If the comparison is not true, then lets keep looping. Since there is nothing to make
the variable equal to 10 the code snippet would loop forever.
Notes
1. Multiple ELSEIF blocks may be used in a single IF...THEN block.
2. ELSE will only execute following code if no conditions were true.
3. ENDIF is required to close a block of conditionals.
Example
This fi rst example demonstrates using the IF...THEN argument with a goto label. If something is true
jump to the label after the THEN statement. Otherwise, if the condition is false execute the commands
on the next line after the THEN statement. You can follow the program fl ow with a terminal window
connected at 9600 baud.
value var long
value = 0
main
value = value+1
if value = 10 then reset
;display the value on the PC terminal window
serout s_out,i9600,["Value=",dec value,13]
pause 1000
goto main
reset
value = 0
goto main
GOSUB Example
A GOSUB statement can be used after a THEN command. When the condition is true a GOSUB will
send the program to the GOSUB label. Eventually a RETURN statement is expected. This will return
the program to the next line of code after the GOSUB statement was used. It is an easy way to create
conditional branching in a main program loop. The program will increment value by 1 each loop.
Once value is equal to 10 the condition becomes true and the GOSUB label is executed. This resets
value to 0 starting the process over. The program was written to be followed using a terminal window
connected to it at 9600 baud. Follow the results until you understand the decision making process.
Can you guess what the terminal window will show?
value var long
value = 0
main
value = value+1
if value = 10 then gosub reset
;display the value on the PC terminal window
serout s_out,i9600,["Value=",dec value,13]
pause 1000
goto main
reset
value = 0
return
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