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⌂ ∞ ▽ Elite on the 6502

Keyboard: FLKB

[Commodore 64 version]

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

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




 This routine does nothing in Commodore 64 Elite, apart from setting the A and
 X registers to 15. This code is left over from the 6502 Second Processor
 version of Elite.


.FLKB

 LDA #15                ; This code is left over from the 6502 Second Processor
 TAX                    ; version, which calls OSBYTE to flush the input buffers
;JMP OSBYTE             ; (the call to OSBYTE is commented out in the original
                        ; source, so all this does now is set A and X to 15)

 RTS                    ; Return from the subroutine