[lwip-users] Re: [lwip] what speed?

[John C. Toman]

Michel,

The larger 8019as manual is available. I've put a copy of it on my web 
site: http://www.ctica.com/~jctoman/rtl8019.pdf

There are some sample packet drivers for this lying around on the net. 
There is code for the PIC using the 8019as that you might find useful in 
the november issue of circuit cellar (www.circuitcellaronline.com  -- 
see the "Packet Whacker" article in the November edition.

We are contemplating porting lwip to the Rabbit 2000 processor using the 
Softools C compiler. The hardware produced by Rabbit Semiconductor uses 
the RTK8019as.

John Toman

Michel Julier wrote:

>Hello everybody,
>
>I am planning to port lwIP to the Zilog eZ80. This processor is supplied
>with a (precompiled) TCP/IP: IPworks from MetroLink, with a unix-like
>RTOS called "xinu". All that is big (about 100KB code size for a web
>server), and very slow (less than 10KB/s transfer rate on an 8-bit CPU
>running at near 20 MIPS and a RTL8019AS 10Mb/s ethernet interface).
>
>I know that lwIP will allow me to gain access to the source (for using
>in other projects) and to reduce the memory usage. But will it allow me
>to increase the transfer rate over Ethernet? I hoped to transfer near
>1MB/s (or at least 500Ko/s) on a 10Mb/s 10-base-T interface. Using
>IPworks the speed is 100 times below that, probably because this RTOS is
>too heavy for such a slow CPU. Does anyone have ideas about the speed
>using lwIP?
>
>By the way, if somebody has a manual on how to program the RTL8019AS
>(this is a NE2000-compatible chip with ISA PnP support), it would be
>really nice. At Realtek, they give a very short manual, and explain
>mostly how to use the Plug-and-Play features, they seem to beleive that
>anyone knows how to program a NE2000...
>
>Michel Julier
>Montpellier, France
>[This message was sent through the lwip discussion list.]
>



[This message was sent through the lwip discussion list.]