IMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM;
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:		BASIC Stamp - Syntax Description		:
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:		   (C) 1993 by Parallax, Inc.			:
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HMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM<

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COMMENTS
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Comments begin with an apostrophe (') and continue until the end of the line.

Example:	high 0	'make pin 0 high

Of course, there's also the old REM.

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CONSTANTS
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Constants can be declared in four ways: decimal, hex, binary, and ASCII.
Decimal numbers are typed directly, hex numbers are preceeded with a dollar-
sign ($), binary numbers are preceeded by a percent-sign (%), and ASCII values
are enclosed in quotes (").

Examples:	100		' 100 decimal
		$64		' 64 hex
		%01100100	' 01100100 binary
		"A"		' "A" ascii (65)
		"Hello"		' "Hello" - equivalent to "H","e","l","l","o"

		B1 = B0 ^ $AA	' xor B0 with AA hex

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VARIABLES
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The stamp has 16 bytes of RAM organized as 56 variables:  8 words, 16 bytes,
and 32 bits.  The 32 bit variables cover the bottom 2 words or 4 bytes.

Words:	PORT
	W0, W1, W2, W3, W4, W5, W6

Bytes:	PINS, DIRS  (together equal PORT)
	B0, B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12, B13

Bits:	PIN0, PIN1, PIN2, PIN3, PIN4, PIN5, PIN6, PIN7  (together equal PINS)
	DIR0, DIR1, DIR2, DIR3, DIR4, DIR5, DIR6, DIR7  (together equal DIRS)
	BIT0, BIT1, BIT2, BIT3, BIT4, BIT5, BIT6, BIT7  (together equal B0)
	BIT8, BIT9, BIT10, BIT11, BIT12, BIT13, BIT14, BIT15  (together B1)

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SYMBOLS
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Symbols can be assigned constant values, alias names for variables, and program
addresses.  Constant values and alias variable names are assigned by following
the symbol name with an equal-sign (=), followed by the variable or constant.
Program addresses are assigned by following the symbol with a colon (:).

Examples:	SYMBOL NOTES = 35	'define a constant symbol
		SYMBOL COUNTER = W0	'define a variable symbol
		PROGRESS: GOTO PROGRESS	'address symbol end with colons


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FORMAT
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Case is not registered, except in the case of strings (denoted by ").

BASIC commands and label declarations can be separated by colons (:) in order
to fit multiple symbols and commands into a single line.

Examples:

	SYMBOL MODE = BIT0 : SYMBOL FLAG = BIT1 : SYMBOL LIMIT = 45

	NOISE: RANDOM W0 : B2 = B0 & $7F : SOUND 0,(B0,7) : GOTO NOISE

Usually, programs will be formatted as follows:

SYMBOL ALIAS = W0 : SYMBOL DOGS = B4 : SYMBOL RELAY = 3 'Assign symbols

MAIN:	PORT = %0000000011111111			'Main program
	GOSUB SUB
	GOTO MAIN

SUB:	PULSOUT RELAY,1000 : TOGGLE 0 : RETURN		'Subroutines


Note:	The compiler always places an END instruction after the last line of
	a program.