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Maximum SRAM usage on STM3220G-EVAL

Question asked by grimes.robert on Aug 10, 2011
Latest reply on Aug 11, 2011 by Clive One
How much is there, really?  And how much is really available?

The specs all say 16 mbit, but the part and the schematic show 32 mbit, or 4 MBytes. 

Looking into the code examples include with IAR EWARM, it seems only A0-A17 are assigned to the FSMC, which suggests only 256 KBytes?!

However, in the debugger there appears to be 512 KBytes of actually usable memory! 

So, here are my questions:
  1. How much memory is actually usable?
  2. How do I set up access to all of it?