Simple NIOS-II w/MMU simulator
Brad Parker <brad@heeltoe.com>
06/30/10

This code implements a simple NIOS-II cpu; It's not a complete or
generalized implementation, however.  Originally I only need to
simulate a small amount tightly coupled instruction memory and tightly
coupled data memory and data ddr2 (sdram).  Once that worked I extended
it to include timers, a jtag uart, flash and dram.  I then added the
"mmu" tlb support.

The memorys are in fixed locations.  You'll have to modify mem.c to suit
your implementation.

The loader will read an arbitrary elf file generated by the nios toolchain.

The currnet version will run a stock 3C120 version of NIOS linux (w/mmu) and
will show a shell prompt.




