[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [avr-chat] Mega88 bootloader?

From: E. Weddington
Subject: Re: [avr-chat] Mega88 bootloader?
Date: Thu, 21 Jul 2005 09:28:22 -0600
User-agent: Mozilla Thunderbird 1.0.2 (Windows/20050317)

Bob Paddock wrote:

On Thu, 21 Jul 2005 16:58:05 +0200, Bernard Fouché <address@hidden> wrote:

Bob Paddock wrote:

At the end of my bootloader I have:

   __asm__ __volatile__ ("rjmp 0x0000\n\t" ::);

The code that seems to be generated is:

    __asm__ __volatile__ ("rjmp 0x0000\n\t" ::);
    1e1c:    26 cf           rjmp    .-436        ; 0x1c6a

What don't I understand here?  1C6A is obviously not 0x0000.
1C6A is my spi_xfer() function.

I understand why it does not work now, one of those "Duh" moments,
when someone looks over your shoulder.  Of course a Relative Jump (RJMP)
is not going to jump to absolute zero.  Still don't understand
why it came out at what seems to be an arbitrary address.

Curious: what address does the reset vector jump to?


reply via email to

[Prev in Thread] Current Thread [Next in Thread]