Placing variables in memory

> Let's say you want to put some data buffer for an isr in a on-chip memory to avoid using slow

> external ram bus - how would you do it with your method?

The same way ;-)

> To resolve pointer you would still have to access it located in the external ram, so you would

> not save any time doint this...

This is an optimization issue -- even -O1 will avoid this, and keep the pointer in a register.

> It would be great if the gcc compiler implementation for Nios could be extended with some

> typical embedded features like "at" directive...

The section attribute handles many of these situations. A linker script can handle the rest -- using

script defined variables, for example,

Regards,

--Scott