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BBC Micro Elite

Keyboard: FLKB (6502SP version)

       Name: FLKB                                              [View in context]
       Type: Subroutine
   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)