How do we know what words are reserved?

[Pongo]

I discovered the hard way that it's not possible to have a subroutine called "readit", this code always fails with a not-very-helpful "Syntax error on line 2 at/before position 12". "readltc" is fine

main:
gosub readit
end
readit:
'blah
return

I assume "readit" is some kind of reserved word although I don't find it searching the pdf's. What are the rules for label names?

 

[westaust55]

The rules for Labels are covered in PICAXE manual2 page 6.
Reserved words for labels, commands, keywords/parameters are listed in Appendices A, B and C

That said, the currently available manual is still that used for PE version 5.x and the PE at V6 will likely introduce some additional reserved words.

 

[srnet]

I assume "readit" is some kind of reserved word although I don't find it searching the pdf's. What are the rules for label names?

Reserved words should be listed in the manual, but readit does not appear to be there.

Although I never check the reserved list myself, if I get that syntax error, I just assume its beacause I am using a reserved word.

 

[hippy]

Reserved words should be listed in the manual, but readit does not appear to be there.

We will have to investigate that. 'readit' is a shortform synonym for ReadInternalTemperature.

 

[Dartmoor]

As a beginner, I have so far been using logicator which avoids this issue.
This weekend I tried my first basic program now that PE6 seems more stable.
I just got an 08M2 to read three ibuttons and flash the led a number of times to show which button it is (start of a bigger project).
Instantly I came across this problem because I copied part of the sample program from the data sheet - then found that you cannot have a sub-routine called 'loop' !!

 

[Pongo]

We will have to investigate that. 'readit' is a shortform synonym for ReadInternalTemperature.

That explains it, thanks hippy and others for your replies.

 

[MPep]

I would have never guessed that one, "readit".