I want to write a modem class lower filter driver. Any one could help me?
link to a site or source code or sample.
thanks.
See sample code for FakeModem in DDK. The overall idea of modem driver is implementation of the write/read operations and serial IOCTLs. You also implemenet communiction with your device (either it is USB or PCI device) and all PnP stuff.
At what layer do you mean by class lower filter ? in between modem.sys
and the modem implementation itself (the FDO) or below the FDO? You can
only be a generic class filter by filtering between modem and the FDO
(or on top of modem.sys).
As for examples, fakemodem in the KMDF DDK is not the greatest b/c it
demonstrates how to implement a full blown modem. It is a good basis to
figure out which IOCTLs / reads / writes you would want to filter. I
would take the KMDF devuppr toaster example and start from there, adding
in the io handlers that you need.
d
– I can spell, I just can’t type.
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of david whiteman
Sent: Monday, July 24, 2006 12:34 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] Modem driver
I want to write a modem class lower filter driver. Any one could help
me?
link to a site or source code or sample.
thanks.
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