Storage Memory dilemma

Hi,

I have a board with PXA270 and I wanted to test my 32MB RAM. In
Settings->Control Panel->System, i see that have about 20MB of RAM to play
with. 15MB is allocated to Program Memory and 5MB allocated to Storage
Memory. Since i have 32MB of RAM in total, i'm assuming the other 12MB got
used up by the image? Am i correct?

Anyway to real question. As i said, there is 5MB allocated to Storage Memory
- of which 100KB was already in use. I then tried transferring a 5MB file to
RAM and this did not work, obviously. I then tried transferring 4.8MB of RAM
and this worked. However, i then looked at the System settings again and it
said that it was only using ~ 1.4MB or something like that - the important
thing was the amount of Storage Memory used was NOT zero or at least close to
it. I then added another file of size 2MB and this worked. Again, the amount
of memory used increased but only less than what i added. How was i able to
add a 4.8MB file and a 2MB separately, but i couldn't add a 5MB file by
itself? Thanks in advance.

Michael--J.
.

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