Microcontrollers known to work with the [[http://mightyohm.com/avr_rescue|HV Rescue Shield]] and [[http://mightyohm.com/hvrescue2|HV Rescue Shield 2]] This list is in progress and by no means complete. Most devices that are pin-compatible with the ones shown here will work with no modification to the Rescue Shield software or hardware. If you have good results with a device that is not listed, please consider adding it. Hardware versions < 2.0 (the original version of the shield): * ATmega48/88/168 * ATmega48P/88P/168P/328P (only 328P has been tested) * ATmega48PA/88PA/168PA (should work, but have not been tested) * ATtiny2313 Hardware versions >= 2.0 (the HV Rescue Shield 2, with 3 IC sockets): * All microcontrollers shown above for the original hardware * ATtiny13A * ATtiny25/45/85 * most 8-pin ATtiny microcontrollers should be supported, since they share the same HVSP protocol * if you have tested a part not listed here, please consider adding it to the list! Note: Not all ATtiny parts have an EFUSE. If you try to read the EFUSE on a device that doesn't have one shown in the datasheet, it will most likely return 0xFF, and attempts to change it will not work (but could have unexpected results).