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⌂ ∞ ▽ Elite on the BBC Micro and NES

Keyboard: FLKB

[6502 Second Processor version]

       Name: FLKB                                                    [Show more]
       Type: Subroutine
   Category: Keyboard
    Summary: Flush the keyboard buffer

    Context: See this subroutine in context in the source code
 Variations: See code variations for this subroutine in the different versions
 References: This subroutine is called as follows:
             * MT26 calls FLKB
             * TRADEMODE calls FLKB




.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