Hi,
I have delared a structure in C. I will use its vars in asm file. I want to use one of its
array member variables as circular buffer. How can I declare it as a circular buffer in C. I
have tried to declare an array in C and then tried to use it as circular buffer in asm, but it
didnot work.

The other solution can be to declare the whole structure in assembly. I cant find a way for
doing that. Can anyone suggest a way out,

Thanks and Regards,
Saba

Saba wrote:
>
> Hi,
> I have delared a structure in C. I will use its vars in 
> asm file. I want to use one of its array member variables 
> as circular buffer. How can I declare it as a circular 
> buffer in C. I have tried to declare an array in C and 
> then tried to use it as circular buffer in asm, but it 
> didnot work.
> 
> The other solution can be to declare the whole structure 
> in assembly. I cant find a way for doing that. Can anyone 
> suggest a way out,

Declaring and using circular buffers in assembly is easy:

<code>
.VAR circular_buffer_data[128];

...

b0=circular_buffer_data;
l0=length(circular_buffer_data);
</code>

Now you you use the pointer i0 as a circular buffer pointer. If you 
set l0 to zero, then i0 becomes a linear buffer pointer. You'll find 
more in the manual.

Regards,
Andor