Keyboard: FLKB (Disc version)

       Name: FLKB                                              [View in context]
       Type: Subroutine                                       [Compare versions]
   Category: Keyboard
    Summary: Flush the keyboard buffer


.FLKB

 LDA #15                \ Call OSBYTE with A = 15 and Y <> 0 to flush the input
 TAX                    \ buffers (i.e. flush the operating system's keyboard
 JMP OSBYTE             \ buffer) and return from the subroutine using a tail
                        \ call