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EB4C: Edge Routines
Used by the routine at TapeSampler.
Local edge-sampling helpers used by TapeSampler.
EdgeRoutines EB4C CALL EdgeRoutines_0
EB4F RET NC
This entry point is used by the routine at TapeSampler.
EdgeRoutines_0 EB50 LD A,$16
EdgeRoutines_1 EB52 DEC A
EB53 JR NZ,EdgeRoutines_1
EB55 AND A
EdgeRoutines_2 EB56 INC B
EB57 RET Z
EB58 LD A,$FF
EB5A IN A,($FE)
EB5C RRA
EB5D RET NC
EB5E XOR C
EB5F AND $20
EB61 JR Z,EdgeRoutines_2
EB63 LD A,C
EB64 CPL
EB65 LD C,A
EB66 LD A,$00
EB68 AND $07
EB6A OR $08
EB6C OUT ($FE),A
EB6E SCF
EB6F RET
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