AVR-Chat

Hi Paul, 

> > The reason you can drop one instruction is that you know 
> the low byte 
> > of the address is zero and make use of the identity that 0+x = x,
> 
> Yep, I worked that out, just wasn't 100% sure about the 
> phrase 'page boundry'.

Ok.

> > but I assume I am talking to some spooky RSRE/DRA/DERA man 
> > that was, on the hill.
> 
> not quite on the hill ;-)
> So you're either ex DERA or nearby?

I worked as a contractor on some ATC and radar projects at DRA and DERA
at Malvern, but left before you became QinetiQ (what a unbelievably crap
name that it).  I was also somewhat interested in the TenDRA and MALPAS
technology as paths crossed whilst I was there.

> Its been a long time since I've done any assembly, and my 
> brain is a little fogged.

No problem.

--
Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
CrossWorks for MSP430, ARM, and (soon) Atmel AVR processors