<div>You can dump them to get absolutely known values; the below is taken from one of ladyada's Makefiles:</div><div><br></div><div><font class="Apple-style-span" face="'courier new', monospace">read-fuse:</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> $(AVRDUDE) $(AVRDUDE_FLAGS) -u -U lfuse:r:l.txt:r</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> $(AVRDUDE) $(AVRDUDE_FLAGS) -u -U hfuse:r:h.txt:r</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> $(AVRDUDE) $(AVRDUDE_FLAGS) -u -U efuse:r:e.txt:r</font></div><div><font class="Apple-style-span" face="'courier new', monospace"><br>
</font></div><div>It's also specified in the boards.txt file. The three that matter:</div><div><br></div><div><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:uno.bootloader.low_fuses=0xff</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:uno.bootloader.high_fuses=0xde</font></div><div><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:uno.bootloader.extended_fuses=0x05</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"><br></font></div><div><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:atmega328.bootloader.low_fuses=0xFF</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:atmega328.bootloader.high_fuses=0xDA</font></div><div><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:atmega328.bootloader.extended_fuses=0x05</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> </font></div><div class="gmail_quote"><div class="gmail_quote"><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:atmega168.bootloader.high_fuses=0xdd</font></div>
<div class="gmail_quote"><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:atmega168.bootloader.extended_fuses=0x00</font></div><div class="gmail_quote"><font class="Apple-style-span" face="'courier new', monospace">./arduino/boards.txt:atmega8.bootloader.low_fuses=0xdf</font></div>
</div>-- <br>Josh Myer 650.248.3796<br> <a href="mailto:josh@joshisanerd.com">josh@joshisanerd.com</a><br>