I want modify the MAC layer of the 802.11b protocol for a specific application. I'm using Graphics Master and was wondering if it's possible to backup and write to the PCMCIA card connecting it to my development board?
You're going to have to write a custom PCMCIA driver. A good resource for both past knowledge and current help for something like this is the Microsoft public newsgroups, which are available from the free news server msnews.microsoft.com. I recommend you look/post in the following groups for this type of question:
Is there a tutorial or reference on the web or anywhere that can help me write a driver? I want something more complicated than a normal mouse driver, preferibly something wireless and related to networking.
1. Building Powerful Platforms with Windows CE By James Y. Wilson and Aspi Havewala, Addison-Wesly Press. This book covers the fundamentals of the different driver models in CE.
2. Order Platform Builder evaluation or emulator edition (you'll only pay for shipping, which is about $5) from Microsoft. Platform Builder has x86 sample drivers for just about every device type supported in CE.