Driver for a PS/2 keyboard.
Supports PS/2 Scan Code Set 1 and 2, on both UK and UK English keyboards. See the OSDev Wiki.
Requires that you sample a pin in an interrupt routine and shift in the bit. We don't sample the pin in this library, as that makes testing difficult, and it means you have to make this object a global static mut that the interrupt can access, which is unsafe.
Contains the implementation of Scancode Set 1. See the OS dev wiki: https://wiki.osdev.org/PS/2_Keyboard#Scan_Code_Set_1
Contains the implementation of Scancode Set 2. See the OS dev wiki: https://wiki.osdev.org/PS/2_Keyboard#Scan_Code_Set_2
Indicates different error conditions.
Options for how we can handle what happens when the Ctrl key is held down and a letter is pressed.
Keycodes that can be generated by a keyboard.