Re: [lwip-users] RE: lwip-users Digest, Vol 7, Issue 8

[Leon Woestenberg]

Hello Eric,

On Mon, 2004-03-15 at 02:41, Eric Shufro wrote:

> Also, for the cs8900 driver, I see how its I/O mode, but I don't have the
> ability to memory map the registers (I don't believe) due to the way the
> chip has been hardwired to my micro. The micro can however do it.
> 
> How did you avoid using packet page read/write and IO read / writes with the
> cs8900? Memory mapping avoids that?
> 
I am using the cs8900 in i/o mode; this means I have 16 i/o registers
available.

I happen to access those register using memory mapping from my
processor; but you should be able to use i/o port operations from an
other type of processor.

In order to access the packet page contents, you would use register 0x0a
(packet page pointer) and 0x0c (packet page data). See section 4.10 in
the cs8900 datasheet (April 2001).

Leon,