Any problem in declaring and using VARs longer than 512 bytes?

[skimask]

I built an MP3 player, used a PIC18F4620, and if I remember right I used up practically all of the onchip ram in one word variable:
sectorbuffer var word[1536], or maybe it was more than one. I'll check when I get home tonight.

Easiest way is to just write the program and compile it. If you get an error, you can't.
Wish I had more instant info for ya....
JDG

[sougata]

Hi All,

Sorry I missed that the used chip is a PIC18. It does have a linear addressing for the RAM location.

Arrays must fit entirely within one RAM bank on most PICmicro MCUs.
They may not span RAM banks on 12-bit, 14-bit or 17Cxxx devices.
(Arrays may span banks on 18Xxxx devices. Byte- and word-sized
arrays are only limited in length by the amount of memory.) The
compiler will assure that arrays will fit in memory before successfully
compiling.

Define your array to a specific bank such that it spills over to the next bank.