ez80F91 has stack (not stack stack though?) and MAC, so you just need the PHY to complete. I'm designing "something" with it at the moment, the devkit is cheap enough, the docs a bit stodgy, and the tools on the primitive side. But so far so good. You really need the programmer, as they don't seem to document that side of things much.
If this is for quick thing, consider the Rabbit Core Modules (
) . They do have TCP Stack along with a hole lot of other stuff, are fairly cheap etc. To get you started you must buy one of their SDK's but they are also low priced. Apart from this there are no royalites or such.
If you have your own hardware design, you may want to port one of those free TCP/IP stacks to it on your own.
Hi, I just can back from a Renesas (formerly Hitachi/Mitsubushi) seminar. Basically they were touting that they'll provide reference code TCP/IP stack for all of their micro products -- for free. This covers SH-X, H8/300H, H8S/2000, M16C and even H8/300 (in some limited functionality). The stack runs on RTOS and non-RTOS systems.
The catch is -- you have to buy their micros and sign an NDA saying that you won't port the code to a different manufacturer ;-)
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