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rtlinux 2.0rel-1
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This example demonstrates how physical memory can
be accessed from both Linux and RTL tasks.

rtp.c is compiled as both a module (rtp.o)
and an ordinary Linux program (rtpu). Both programs
print the contents of memory starting from address 0xA0000.

Note: Only memory that was marked as "reserved" by Linux
(e.g., the memory in between 0xA0000 and 0x100000) can be
mapped from user space with /dev/mem.

Michael Barabanov <baraban@fsmlabs.com>