Lpc2000

> That would be hard to do with CrossStudio because it writes 
> the loader and code back-to-back.  To make things more 
> difficult, the Olimex board has a jumper rather than a switch 
> for that function.

That's what I had to do.
For some mysterious reason, having it in bootloader mode
when loader.exe is downloaded into RAM, but then letting go
of P0.14 works fine.
Maybe wire in a pushbutton, just to work around it.
I had to wire nTRST to the reset pin (ie. NOT pull it up to Vcc).

> If that's really the way the chip works, Philips should be 
> ashamed of themselves!  As I said in my previous message, 
> I'm NOT impressed with the way the LPC parts are programmed.  
> It's a poor design especially for debugging and high-speed 
> production programming.

It works a treat with the Nohau/Seehau/Hitech C environment,
so it's not Philips' fault.
I suspect it's a marginal timing issue on CrossWorks.
Maybe Paul or Michael can shed some light there.
I do recall they use the loader like this because the TAP
needs to be reset or some such.


> > Do you maybe disable the PLL here after recompiling ?
> > Most likely the Flash download "looks" succesful, but it's not.
> 
> That's what I suspect is going on.  That part of the code is 
> still living in RAM even after you tell it to use FLASH.  
> This seems to be a bug in the way CrossStudio is building the 
> make (and/or other) file(s) for the linker?

Nope, the building and linking is fine.
I think this is because you're not setting P properly.
I set up the PLL in my sys_init() start code in C.
It's preferable not to depart from the vendors' default startup
code, it will bite you in the bum later.

> Yes, the startup code executes the magic sequence after 
> establishing the PLL settings.  The PLL should be properly 
> initialized EVERY time the chip is reset.  I don't understand 
> how the startup code is only executed sometimes, or perhaps 
> there are two different copies of it (one in RAM and one in 
> FLASH)?  Again, this seems like a bug in how the code is built?

As above.

-- Kris