Hello Milkymisters, :)
On Thu, Dec 05, 2013 at 10:58:35PM +0100, Clifford Wolf wrote:
> I'll post a short note as soon as I get lm32 working with yosys.
I've successfully synthesized and passed a post-synthesis simulation
of lm32 now.
I had to patch lm32 to stop undef (x) values to bounce around inside the
core after reset and cause pre/post synthesis simulation mismatches. You
might or might not want to apply my patch to your version of lm32. The
difference in resource usage should be neglectable, if there is any at all:
https://github.com/cliffordwolf/yosys-bigsim/commit/057537eb99aba70804e68368de345263f569682a
> thanks for the help! now I have to figure out why the yosys FSM extraction
> code crashes on lm32..
in case anyone was wondering: the fsm detection code thought that
condition_x in lm32_cpu would be an fsm state register. the attempt to
extract that non-existing fsm of course failed, triggering an assert. I've
fixed the bug in the fsm detection code.
yours,
- clifford
--
To understand recursion, you must first understand recursion.
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