-Mouse-
MouseCoordinatesInSvga - A fix on mouse coordinate problems in SVGA graphics modes.
MouseCursorShapeChange - How to change the basic mouse cursor appearance using QB.BI and interrupts.

-Keyboard-
MiloSedlaceckKeyboardHandler - The almighty keyboard handler by the genius himself.
AltCtrlShifs - Code to detect the press of those keys.
ChrTwo - Scan code array -- when using INP(96).
SelectItem - A stand-alone SUB to select an item from a list using arrow keys.

-Modem-
SerialComms - Chat with another PC using serial port and a modem.