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small, free simple state machine processor suggestions?

Has anyone found or could recommend a small(ish) processor for more complex state machine tasks that is:

  1. ~1000 LUTs or so (smaller is better)
  2. available under a free license (say, GPL, LPGL, BSD)
  3. available in vhdl?

Ideally something like picoblaze would probably do what I want, except that it's not under any of the available licenses, and pacoblaze is vhdl (and potentially an IP nightmare). I've found a bunch of small processors on opencores and the like but many of them look half-finished. Any recommendations? These state machines are driving me mad!

Thanks!

...Eric

Reply to
jonas
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Lattice offers the Mico8 as OpenSource, available as Verilog and VHDL sources. Haven't tested it yet, so I can't comment on it at all. Plus I don't know if it uses specific features for Lattice-parts or can be synthesized for any architecture.

Just have a look at the website:

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Reply to
Sean Durkin

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Wow, so their license actually looks very reasonable and BSD-like. I'm going to e-mail them and ask if their license allows the incorporation of their code into a GPL'd project -- a casual reading suggests yes, although IANAL.

And you're right, it could rely on lattice-specific primitives and the like. But if not, wow, it'll work great.

...Eric

Reply to
jonas

If you want a real small 16 bit processor (65 Flip Flops and about 250 gates): ftp://137.193.64.130/pub/mproz/

Don't think that 65 FF can have a license at all.

No, but shouldn't be a big problem to implement it in VHDL.

Reply to
Herbert Kleebauer

By which I meant "pacoblaze is verilog". Alas. Of course, the synthesis tools can interoperate, but the low-budget simulators (such as symphony eda) cannot.

Reply to
jonas

snipped-for-privacy@mit.edu schrieb:

there is "avalon micro sequencer" at altera website.

and there exists a statemachine compiler from russia, I translated the docs to english but then new release did come out and I havent looked at changes or updated the docs. this sequences does come with its own compiler, that generates the microcode.

Antti

Reply to
Antti

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