I changed the controller and the 74hcxxxx but still error. I have programmed the atmega without setting the fused bits, because if I set the fused bits as written on the site of the sio2sd the atmega crashes, I already tried two atmega that are now blocked. I have programmed without setting the merged bits. I prepare the sd card with atari folder and Sio2sd.xex files How should I set the merges? I program with avrdude and the command is this:
sudo avrdude -c usbasp -p m32 -u -U flash:w:sio2sd_all_v3.0rc5.bin
and this is the command I used to set the fuses
sudo avrdude -c usbasp -p m32 -u -U lfuse:w:0x3F:m -U hfuse:w:0xC3:m flash:w:sio2sd_all_v3.1rc2.bin
I have 3 atmega, 2 blocked and one mounted on the sio2sd, how can I do to recover the two locked at'mega, so to do other tests? thank you