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AX8 core, UART, and uC programming
Progress! I got the AX8 core (a uC based on
the Atmel AVR instruction set, available from opencores.org)
running on the Xilinx Spartan-3an eval board. It writes to the UART
core, and I can see the UART's output on my PC.
takes 7 minutes or more to recompile an FPGA design, I decided to
set up data2mem. That's a Xilinx-supplied tool to update just the
contents of internal RAM blocks without doing a full recompile. It
took quite a bit of searching, but I figured out how to do it, and
it works fast.
Details are online at
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