debugging drivers

[David Hoopes]

Hello,
    Over the last couple of months I have been learning to write device
drivers.  I have read a lot of books, and been to the SCO device driver
writers class.  So far things have been going fairly well, I have a driver 
up and running, but I would like to learn more about debugging drivers.  So 
far the only debuging method that I have used much is inserting printfs 
everywhere so that I can figure out what it is doing.

    Is there any good reading material on device driver debugging?  What 
other debugging tricks are there that I should try to figure out?  

    I am doing my driver development on both SCO Unix and Xenix (386).


				thanks in advance

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David Hoopes                              Tallgras Technologies Inc. 
uunet!talgras!david                       11100 W 82nd St.          
Voice: (913) 492-6002 x323                Lenexa, Ks  66214