On Sun, Feb 03, 2002 at 11:05:51AM -0500, To Ken wrote:
> Dear all,
>
> I try the bootloader which coming from
>
> http://www.workingtex.com/htpic/PIC_bootloader.htm
>
> with my PIC16F876, running at 2MHz. Since the 2MHz fosc hex is not
> available, I assemble the hex by my self base on the bootloader asm source
> ver2.2
>
> If the watchdog NOT flag not turn on, then the bootloader run without any
> problems. But if watchdog is on, then nothing run. Would any one help?
> Becase my design need watch running.

Sounds simple enough. The bootloader isn't clearing the WDT so the PIC
keeps resetting in bootloader mode. You need to examine the source of
the bootloader and determine where it's wait loop is. You then insert a
'clrwdt' instruction there, reassemble and reload.

Hope this helps,

BAJ

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.