Lpc2000

--- In lpc2000@yahoogroups.com, "stefano_m_a" <stefano_mora@...> 
wrote:
>
> > 
> > Or just:
> > 
> > _irq:
> >   .word timer0ISR
> > 
> >  
> > > ...
> > > __irq:
> > > 	b timer0ISR
> 
> I must use your solution cause:
> - PC is pointing low addresses
> - timer0ISR function is located on RAM range
> - b instruction is able to jump over 24 bit offsets. 
> Is it right ? 

Yes.  You could also just have a LDR pc, [pc, #-0x0FF0] at address 
0x18, and have the timer0ISR address loaded into the right 
VICVectAddrxx register.  This also works with the handler at any 
address.

Karl Olsen