I am trying to verify fuse bytes by running the following ***commands.
Why I am getting: "The value of one or more fuse bytes are not
specified."

*** stk500 -dATMega128 -q 
STK500 command line programmer, v 2.2 Atmel Corp (C) 2004-2005.

Scanning ports:
COM1 ... Connected to STK500 V2 on port COM1
Device parameters loaded
Programming mode entered
Reading fuse bits... 
Fuse byte 0 read (0x3F) 
Fuse byte 1 read (0xD0) 
Fuse byte 2 read (0xFF) 
Programming mode left
Connection to STK500 V2 closed

*** stk500 -dATMega128 -F3FD0 
STK500 command line programmer, v 2.2 Atmel Corp (C) 2004-2005.

Scanning ports:
COM1 ... Connected to STK500 V2 on port COM1
Device parameters loaded
The value of one or more fuse bytes are not specified.

On Thu, 07 Sep 2006 19:02:29 -0500, "igor" <i...@stdcom.com>
wrote:

>I am trying to verify fuse bytes by running the following ***commands.
>Why I am getting: "The value of one or more fuse bytes are not
>specified."
>
>*** stk500 -dATMega128 -q 
>STK500 command line programmer, v 2.2 Atmel Corp (C) 2004-2005.
>
>Scanning ports:
>COM1 ... Connected to STK500 V2 on port COM1
>Device parameters loaded
>Programming mode entered
>Reading fuse bits... 
>Fuse byte 0 read (0x3F) 
>Fuse byte 1 read (0xD0) 
>Fuse byte 2 read (0xFF) 
>Programming mode left
>Connection to STK500 V2 closed
>

The "Fuse byte 0", "1", "2" output lines suggest there are three fuse
bytes.

>*** stk500 -dATMega128 -F3FD0 
>STK500 command line programmer, v 2.2 Atmel Corp (C) 2004-2005.
>

The "-F3FD0" option looks like you are specifying two fuse bytes.

>Scanning ports:
>COM1 ... Connected to STK500 V2 on port COM1
>Device parameters loaded
>The value of one or more fuse bytes are not specified.
>

Was the program expecting you to provide a third fuse byte?

-- 
Dan Henry

"igor" <i...@stdcom.com> wrote in message
news:Q...@giganews.com...
> I am trying to verify fuse bytes by running the following ***commands.
> Why I am getting: "The value of one or more fuse bytes are not
> specified."

<snip>

> *** stk500 -dATMega128 -F3FD0

Had you typed "stk500 -h" you would have seen the correct options.

First of all, -F means verify fusebytes, so you did not specify any fuse
byte at all.

-f sets the first fuse bytes 0 and 1 while -E set the extended fuse byte 2
-F verifies fuse bytes 0 and 1 while -G verfies the extended fuse byte 2

Meindert