INT 16 - KEYBOARD - STORE KEYSTROKE IN KEYBOARD BUFFER (AT/PS w enh keybd only)
        AH = 05h
        CH = scan code
        CL = ASCII character
Return: AL = 00h if successful
             01h if keyboard buffer full
Note:   under DESQview, the following "keystrokes" invoke the following
          actions when they are read from the keyboard buffer:
                38FBh or FB00h  switch to next window (only if main menu
                                popped up)
                38FCh or FC00h  pop up DESQview main menu
                38FEh or FE00h  close the current window
                38FFh or FF00h  pop up DESQview learn menu
SeeAlso: AH=00h,AH=71h,AH=FFh,INT 15/AX=DE10h

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