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Re: [avr-gcc-list] use of specifin RAM location

From: Daniel O'Connor
Subject: Re: [avr-gcc-list] use of specifin RAM location
Date: Tue, 29 Nov 2005 10:42:57 +1030
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On Tue, 29 Nov 2005 09:05, address@hidden wrote:
> I have the same problem, and the point is that part of my external
> memory is inside an FPGA, basically under control of the FPGA (It's
> high-speed ADC data), while another part is external SRAM which I use
> for my heap etc.

You should be able to do..
char *foo;
foo = 0x1234;

for (i = 0; i < 10; i++)

or similar..

> I access the FPGA memory at the moment using pointers which I initialise
> to the right value. I don't yet have a method mapped out for the SRAM -
> it's on the next version of the board (the present version has no
> external SRAM).
> I will have a need to allocate some large-ish arrays in the external
> SRAM in the next hardware version.

I don't think it would be any different to the above unless you are using a 
malloc routine, in which case you would need to tell it to not allocate 
memory in certain places.

Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
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