$(MAKE) F_CPU=12000000 DEVICE=atmega8 do_firmware
$(MAKE) F_CPU=16000000 DEVICE=atmega8 do_firmware
$(MAKE) F_CPU=12000000 DEVICE=atmega88 do_firmware
+ $(MAKE) F_CPU=12000000 DEVICE=atmega168p do_firmware
+ $(MAKE) F_CPU=16000000 DEVICE=atmega168p do_firmware
+ $(MAKE) F_CPU=18000000 DEVICE=atmega168p do_firmware
$(MAKE) F_CPU=12000000 DEVICE=atmega328p do_firmware
$(MAKE) F_CPU=16000000 DEVICE=atmega328p do_firmware
$(MAKE) F_CPU=18000000 DEVICE=atmega328p do_firmware