I have tried everything on this page but nothing seems to work. I got a blank Atmega8 and try to load the bootloader using the simple parallel port programmer. I've tried to use avrdude, arduino bootloader (parallel port) tools and the ispprog as suggested.
Here's the result from Arduino bootloader tool:
Atmel AVR ATmega8 is found.
Writing lock bits ...
Reinitializing device
Atmel AVR ATmega8 is found.
Lock Bits set to 0xff
Atmel AVR ATmega8 is found.
Fuse Low Byte set to 0xdf
Fuse High Byte set to 0xca
Atmel AVR ATmega8 is found.
Erasing device ...
Reinitializing device
Atmel AVR ATmega8 is found.
Uploading: flash
Verifying: flash
flash error at address 0x1c00: file=0x12, mem=0xff
flash error at address 0x1c01: file=0xc0, mem=0xff
flash error at address 0x1c02: file=0x2b, mem=0xff
flash error at address 0x1c03: file=0xc0, mem=0xff
flash error at address 0x1c04: file=0x2a, mem=0xff
...
Atmel AVR ATmega8 is found.
Writing lock bits ...
Reinitializing device
Atmel AVR ATmega8 is found.
Warning: lock bits write=0xCF read=0xFF
Lock Bits set to 0xcf
And the result from avrdude:
avrdude: device not responding
avrdude: initialization failed, rc=-1 Double Check connection and try again...
If I add the "-F" param to force uploading
"Verification error, first mismatch at byte 0X0000 0xca !=0xff
result from ispprog:
write error at address 00001C00 byte writte: 12byte read:FF
Any suggestions? I have another chip can ONLY be programmed on the Asuro robot with the cable connected the same way, but cannot be programmed on the adruino board (a friend helped me to modify the bootloader) ...and I can't overwrite the bootloader now to fix the problem...now I can't program my chips on Adruino board....
some help...
thanks...
Hamlet