[avr-gcc-list] atmega16, atmega162 avrdude downloading

[Owen Osborn]

Hi,
 First thanks to everyone who makes these tools possible.  I don't know 
where I'd be without them.
 I am having a problem downloading to the atmega16 and atmega162 chips 
using avrdude.  First I try to erase the device using the following command 
with a parallel port cable I made (named owensCable in config file):

avrdude -p m162 -c owensCable -e

 With the atmega162 there is no response from the chip at all, and i get 
the following:

avrdude: AVR device not responding
avrdude: initialization failed, rc=-1
        Double check connections and try again, or use -F to override
        this check.


   Running the command with the atmega16, I get something a little better:


avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e8502
avrdude: current erase-rewrite cycle count is -65208577 (if being tracked)
avrdude: erasing chip
avrdude done.  Thank you.

   The strange thing, however, is that it returns a different device 
signature each time I run this.  I know something is working because this 
command works fine with an atmega8, returning the correct device signature 
each time.  I can't figure out what is differnt with the larger chips.

thanks

owen