Re: XM10E driver for linux

[Ant Skelton <askelton@xxxxxxx>]

"K. C. Li" wrote:
>
> We all them all and would be pleased to act as beta testers.

Excellent. I'll mail the sources over. It'll be slightly longer than
a week I'm afraid, as I just got told I have to fly to Atlanta to work
for a bit.

> Yes, our MS-DOS TSR device driver for the TW523/TW7223 is having
similar
> problems with the newer parallel ports. We have the MASM source code
for
> the TWDRV50 driver and would be happy to release it to you for
reference
> if required.

Yes, that would be useful, thanks. I think I pretty much have it
sussed now - it seems to be with the parallel port mode. If the mobo
parallel port is in ECP mode, it looks as tho the line drivers are
totem-pole, rather than open collector, and the tw7223 is only able
to drive the line down to about 3v when it wants to output a logic
zero, which is way above the TTL threshold. Putting some stronger
pull-ups on might also fix it - I haven't tried that.

I have code to detect the current parallel port mode and switch to
SPP (bog standard mode) as appropriate, but this won't be finished
until I get back.

cheers

ant
--
ant@xxxxxxx                     /\/\                www.ant.org
askelton@xxxxxxx     (`')     www.homewireless.co.uk
()
There is no spoon


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