Michael Tsang - What kinds of skills does someone need to write drivers?

The Discussion

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  How true - you can't assume anything. Valuable lesson.

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  IMHO, writing drivers assumes much more liability than writing applications. Although it's always bad if software crashes, what a difference between a crashing app. vs. a crashing driver: The latter tears down the whole system!
  
  As Michael says, drivers need to protect against race conditions due to resources getting accessed from various asynchronous contexts, including interrupt handlers.
  
  Spin locks, "atomic" access to data and other interlocked operations are sometimes not easy to implement.

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  HI Tsang,
  
  Your information provided on the site was very intresting and very good, i am using a TC4200 on which we aer experiencing issue unable towrite on the edge of the screen about 1 cm on all the four sides of the screen, but when i use  the pen to get the start menu options it works fine.
  
  Could you all explain me why we need to install the Wacom driver on the tablet pc.
  
  Regards
  Cyberbob