Re: problems with pcnet_cs and powerpc

On Wed, Jul 02, 2003 at 10:16:47AM -0700, David Hinds wrote:
> On Wed, Jul 02, 2003 at 06:12:35PM +0200, Oliver Kurth wrote:
> > 
> > It does not work. I tried replacing all occurences of insw and outsw 
> > with insb and outb, then writing even bytes to offset+0 and odd bytes to 
> > offset+1. No change at all...
> 
> Oh... it is more complicated than that.  There is a register setting
> for 8/16 bit mode, now that I think about it.
> 
> Change:
> 
>     ei_status.word16 = 1;
> 
> to:
> 
>     ei_status.word16 = 0;
> 
> You'll also need to remove the odd-byte handling and fix "count" to be
> in bytes rather than words, around the insw/outsw code.

Doesn't help... it's getting more weird.

If word16=0, the packet consist of alternating ff and 00, no trace of 
the data left. I even tried setiing the buffer with numbers 0..count-1,
to see what happens.

If word16=1, the packet consists of one correct byte and one 00. The odd 
bytes are always zero.

I tried to write to DATA_PORT+2 (I tried nearly everyting possible..), 
and the packet consisted of random data (but the odd bytes had data != 
00).

> > So I am stuck again. Do you know anyone with experience with 8390 type 
> > hardware I can ask?
> 
> There are datasheets at http://pcmcia-cs.sourceforge.net/specs in the
> National Semiconductor section.

Thanks. I now understand what the flag word 16 is good for, but it does 
not have the desired effect.

I give up now. I spent four whole days with it, and I have enough of it 
now. Maybe I get back to it some day...

BTW, the modem part works fine. Fortunately, this was more important.

Greetings,
Oliver

-- 
  .''`.
 : :' :    Oliver Kurth [email protected]
 `. `'           Debian GNU/Linux maintainer - www.debian.org
   `-

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