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[avr-gcc-list] Data RAM Pointers

From: Keith Gudger
Subject: [avr-gcc-list] Data RAM Pointers
Date: Fri, 5 Nov 2004 16:08:41 -0800 (PST)

I have a question about data pointers and gcc / gdb / simulavr.

A real data pointer is 16 bits long.  In GCC land, data pointers are 24
bits long (there is an extra byte with "0x80" in it).  I have a structure
which has an element:

uint32_t* ram_add;

16 bits get reserved for this pointer.  The value written into it is
0x800108.  When later using this address, I realize that this is not a
problem for the "real" chip, but what happens in gdb / simulavr?


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