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Optimized based on https://github.com/cc65/cc65/pull/1393.
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@ -10,12 +10,8 @@
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_kbhit:
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BRK_TELEMON XRD0
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bcs @no_char_action
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ldx #$00
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lda #$01
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ldx #$00
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txa
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rol
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eor #$01
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rts
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@no_char_action:
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lda #$00
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tax
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rts
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