On Sun, Sep 15, 2013 at 10:56 AM, Peter Graf <pg...@q40.de> wrote: > > For joined forces between QL and Q68, this device might be of interest. > If someone wants to build a QL ethernet card from it, I can send him the > corresponding sheet of the Q68 schematics. I have tested the CP2200 on > packet level there. This might save trouble, since there was a buggy > application note. > > As you mention uIP, I had quickly adapted it to a bare-metal Q68 and > CP2200, I can send anyone the sources if interested. But it didn't work > well, there seemed to be an endianess issue or something, and I had no > time to debug it. > > I'd been considering using something like the WIZnet style solution via SPI/IPC for some time. The advantage here is the simple interface (i.e. within my meager hardware capabilities) and availability of 5V interface logic. The disadvantage is the lack of throughput on that interface. Better than native QL serial (of course), but not nearly line speed which even the native QL would seem capable of.
Having a full fledge ethernet interface without the socket limitations of the WIZnet type of chips is an intriguing notion. I wonder if it will have any impact on the amount of work the get a working uIP type stack -- uIP doing things like packet reassembly/fragmentation/etc vs. acting more like a pass-through. In either case, I don't think Posix sockets interface are a requirement so uIP is just as good an API as anything else. Regardless of whether it's communicating with a CP2200 or a WIZnet (or similar). It looks like I need to look into card edge connectors for native QL and a breadboard. I don't have a GC or SGC, but I do have a QXL I could use for compilation and I'll look into putting together a build/test station. _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
