kernel module for hercules graphic card
 

i had a module (char device) that worked well under kernel 2.0
when i upgraded to 2.2 it does not work anymore.
i read about ioremap for direct memory access, and i
can already display a char, but only inside the init routine.
the documentation i found about writing char devices was
not sufficcient ;(

do you know any sources of documentation ?

http://www.ibiblio.org/pub/Linux/doc...ide/lkmpg.html

try there you will get a book writing kernel modules. it might be helpful to you.

i think "struct file_operations" was changed from 2.0 to 2.2 but i cant find the header.

ok got it finally running. wondering about some new grey hairs i can see my messagelog on that old green monitor ;)