Lpc2000

according to user manual:

if P0.14 is high while RESET#=0 then LPC attempts to execute user 
code (if a valid csum found at addr 0x14). It does not enter ISP 
mode. I suppose this is your case as described below

If P0.14 is low while RESET#=0 but also the watchdog overflow flag 
is set, then LPC ignores the state of P0.14 and attempts to start 
user code.

In both cases a valid checksum is required at location 0x14 for LPC 
to execute user code

more details in the manual (p217)

Kerem


--- In lpc2000@yahoogroups.com, "Karl Olsen" <kro@p...> wrote:
> 
> --- In lpc2000@yahoogroups.com, "Kerem Or" <k.or@s...> wrote:
> > Then let the watchdog expire. It will reset the chip but will 
not 
> change the 
> > state of the reset pin. That means your external hardware (if 
you 
> have any) 
> > connected to the LPC reset pin will not get reset.
> 
> Has anybody done this successfully?
> 
> On my LPC2114, I have tried doing a CPU reset by starting the 
> watchdog and letting it expire.  But when it expires, the CPU just 
> hangs, without restarting.  P0.14 isn't low, and it hasn't entered 
> ISP mode.  I'm doing like this:
> 
> WDT->WDTC = PCLK_HZ/4; /* Timeout = 1 second */
> WDT->WDMOD = 0x03;
> WDT->WDFEED = 0xAA;
> WDT->WDFEED = 0x55;
> 
> At this time I can see WDTV decrementing, and when it reaches 
zero, 
> the system just hangs, and interrupt activity stops.
> 
> Karl Olsen