1. OFF keyboard interrupt firing at the Keyboard controller level.
2. Poll 0x64 port until OBF(bit 0) set.
3. Read 0x60 and save.
4. Re-generate scancode using 0xD2 keyboard controller command.
5. Fire keyboard interrupt gate (instruction INT XXh).
6. Some delay sleep(Zzz).
7. Go to step-2.