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CVRBytecode

Additional CAVRIT Opcodes

To use the new opcodes, add the following line to the CricketLogo configuration file:
print c 1 hexprint c 1 pattern c 2 clearlcd c 0 setpin c 1 clearpin c 1 sensor r 1 switch r 1

	Name:		print
	Bytecode:	0x49, 73
	Arguments:	One, 16-bit number to print
	Returns:	None
	Description:	Prints the decimal value of a 16-bit number to the LCD.


	Name:		hexprint
	Bytecode:	0x4A, 74
	Arguments:	One, 16-bit number to print
	Returns:	None
	Description:	Prints the hexadecimal value of a 16-bit number to the LCD.


	Name:		pattern
	Bytecode:	0x4B, 75
	Arguments:	Two in the form: pattern <character> <digit>
				Where <character> is a 16-bit number constructed to
				display a certain pattern (see section on LCD programming)
				and <digit> is a value between 1 and 6.
	Returns:	None
	Description:	Writes the specified pattern to the LCD at the digit
				specified. It is recommended that the user run the
				clearlcd opcode prior to this command to ensure
				that the screen will properly display the character.


	Name:		clearlcd
	Bytecode:	0x4C, 76
	Arguments:	None
	Returns:	None
	Description:	Clears all data from the LCD screen and the text buffer.


	Name:		setpin
	Bytecode:	0x4D, 77
	Arguments:	One number from 0-3. The actual pin that is modified will be from
				pins 4-7 on PORTB.
	Returns:	None
	Description:	Sets one of the pins from 4-7 on PORTB to output a digital one.


	Name:		clrpin
	Bytecode:	0x4E, 78
	Arguments:	One number from 0-3. The actual pin that is modified will be from
				pins 4-7 on PORTB.
	Returns:	None
	Description:	Sets one of the pins from 4-7 on PORTB to output a digital zero.