Hopkins wrote:
> I understand the idea of using pointers that chase each other in a
> circular fashion but I do not know how to declare a memory block (da
> command?) and then how to setup the pointers to store and retrieve
> data.

Memory blocks are reserved with the RES directive.

What you are describing is sometimes called a "circular buffer" or sometimes
a FIFO (First In First Out queue).  For FIFO code details see the various
FIFO_xxx macros in STD.INS.ASPIC at http://www.embedinc.com/pic.  You can
see these macros in use in the standard UART module which is available from
the same web page.


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