Re: Driver code sample for software devices?

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From: Mark Roddy (mroddy_at_nospam.spamt)
Date: 02/01/04 

Date: Sun, 01 Feb 2004 10:50:54 -0500

On Sun, 1 Feb 2004 06:35:33 -0600, "BobF" <rNfOrSePeAzMe@charter.net>
wrote:

>Bryan,
>
>The problem I'm having is getting started. I'm not new to programming, but
>I am new to Windows drivers. I'm trying get my project laid out at a high
>level.
>
>The first question is "How do I make a piece of software show up as a device
>to other applications that are designed to connect to hardware?" I've
>answered this question for myself with the assumption that my app needs to
>be driven by a device driver. That assumption may not be incorrect, but its
>the one I'm working on for now.
>

See the toaster samples in the DDK - this entire collection of drivers
are 'software' devices.

If you are writing a PNP virtual device, it is enumerated off of
'root'.

>The second is how to generate interrupts - this leads to my next assumption;
>a software interrupt scheme will be required because there is no hardware to
>generate interrupts.
>

Use timer dpcs to simulate interrupts.

=====================
Mark Roddy
Windows .NET/XP/2000 Consulting
Hollis Technology Solutions 603-321-1032
www.hollistech.com

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