OSDev.org

Hello, I am trying to write an assembly program. In it I am writing a new ISR for the keyboard. The goal of this ISR is to mix the keys around, so for example if I was going to type 'hello' It would print out as 'jhwwi'. It will only change the letters around so if there is something else in the input, such as a number, it will jump to the old ISR.

I have spent hours on trying to figure out how to accept input from the keyboard so that I can decide if I have to jump to the old ISR or use xlat on the mapping table I have. I tried using int 16 ah = 05 and int 16 ah = 10 but it doesn't seem to be doing anything.

This is about the only thing that is stopping me from completing this program because without getting any input from the keyboard I can't really do anything with it.

Thanks,
james

http://www.nondot.org/sabre/os/articles ... ceDevices/

It should be noted, if you replace the keyboard IRQ, you will lose all INT16 functionality unless your IRQ calls the original, in which case your translation will be ignored.

And just because this smells of l33t hackery, you are talking about kernel space / DOS type assembly language, not just some Windows / Linux user-space application, yes?