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CAVRIT

CAVRIT (Cricket AVR InTerpreter) is a updated version of the Cricket Logo interpreter that is designed to run on the Atmel AVR Butterfly development board. It is backwards compatible with both the communication and bytecode specifications at the Handy Cricket site. CAVRIT, however, does have several major differences including full 16-bit address support, daemon multithreading and has additional bytecodes and comm primatives.

Flashing the Butterfly
Bytecodes
Communication Protocol
Memory Map
I/O Port Descriptions?
Custom LCD Character Display
Known Issues