Virtual Com Driver

[Viktor Godaly]

Dear Sirs /Madams

I need to write a virtual WDM comport. Has anybody out there done this
and/or have any suggestions where to turn to get more information in this
matter. Any suggestions and ideas will be most appreciated.

Regards

Viktor

[Will Dean]

"Viktor Godaly" <vik...@glaze.se> wrote in message
news:OJ1XP9LUBHA.2036@tkmsftngp07...

>
> I need to write a virtual WDM comport. Has anybody out there done this
> and/or have any suggestions where to turn to get more information in this
> matter. Any suggestions and ideas will be most appreciated.

I've done it. My advice would be to not do it. The standard source for
information is the NT serial.sys driver source which is in the DDK. Then
you need to worry about the 9x family, for which you can either mess around
with CCPORT, or write a VCOMM-connected VxD, the documentation is in the
98/ME DDK (or wherever it is at the moment).

It's an extremely complex driver to emulate, and is used in a wide variety
of ways by different apps, so is very hard to test.

Anybody thinking of doing it to avoid modifying their own user-mode apps to
talk to a custom driver should think again. Anybody else should think of a
price and then square it before quoting.

Will

[Viktor Godaly]

Dear Sir,

unfortunately the company that I'm working for needs this WDM for some
reason or other. But it turns out that they I only need to implement it on a
W98 system, but it has to be a WDM driver. You say I should somehow use
ccport for this. How does one go about doing that, do you have any ideas or
can you point me in any direction.

Regards

Viktor

"Will Dean" <{news}@industrial.demon.co.uk> wrote in message
news:1002631624.22133....@news.demon.co.uk...