sir, today i use gdb tools with our programs,,,,really it is very helpful to find out the error with in our programs.
we have complited our parallel-port driver for nibble and compatible mode
sir, i have use smaphore,blocking-IO,lseek on my character driver.
i have successfully registered the multipal devices with a driver .if anybody want to take help for it by using for loop or by call a function …..most welcome.