The next Arduino Tiny release is ready...
http://code.google.com/p/arduino-tiny/
Included is a "highly compatible" core for the ATtiny2313, ATtiny84, ATtiny45, and ATtiny85 processors: most of the functions are very similar or identical to the 0019 core.
Features for 2313 processor...
- All four PWM pins are supported.
- Pin assignment for the RESET pin.
- Both HardwareSerial (from the Arduino 0021 core) and TinyDebugSerial are available. By default, Serial is an instance of HardwareSerial. core_build_options.h includes a compile option to make Serial an instance of TinyDebugSerial instead.
Notes...
- TinyDebugSerial uses PA1 / pin 2.
- HardwareSerial is 342 to 498 bytes larger than TinyDebugSerial.