     $EA87/60039:   Scan Keyboard

    Jump from $EA7B, $FF9F:

    EA87: A9 00     LDA #$00
    EA89: 8D 8D 02  STA $028D
    EA8C: A0 40     LDY #$40
    EA8E: 84 CB     STY $CB
    EA90: 8D 00 DC  STA $DC00
    EA93: AE 01 DC  LDX $DC01
    EA96: E0 FF     CPX #$FF
    EA98: F0 61     BEQ $EAFB
    EA9A: A8        TAY
    EA9B: A9 81     LDA #$81
    EA9D: 85 F5     STA $F5
    EA9F: A9 EB     LDA #$EB
    EAA1: 85 F6     STA $F6
    EAA3: A9 FE     LDA #$FE
    EAA5: 8D 00 DC  STA $DC00

    Jump from $EADA:

    EAA8: A2 08     LDX #$08
    EAAA: 48        PHA

    Jump from $EAB1:

    EAAB: AD 01 DC  LDA $DC01
    EAAE: CD 01 DC  CMP $DC01
    EAB1: D0 F8     BNE $EAAB

    Jump from $EAD2:

    EAB3: 4A        LSR
    EAB4: B0 16     BCS $EACC
    EAB6: 48        PHA
    EAB7: B1 F5     LDA ($F5),Y
    EAB9: C9 05     CMP #$05
    EABB: B0 0C     BCS $EAC9
    EABD: C9 03     CMP #$03
    EABF: F0 08     BEQ $EAC9
    EAC1: 0D 8D 02  ORA $028D
    EAC4: 8D 8D 02  STA $028D
    EAC7: 10 02     BPL $EACB

    Jump from $EABB, $EABF:

    EAC9: 84 CB     STY $CB

    Jump from $EAC7:

    EACB: 68        PLA

    Jump from $EAB4:

    EACC: C8        INY
    EACD: C0 41     CPY #$41
    EACF: B0 0B     BCS $EADC
    EAD1: CA        DEX
    EAD2: D0 DF     BNE $EAB3
    EAD4: 38        SEC
    EAD5: 68        PLA
    EAD6: 2A        ROL
    EAD7: 8D 00 DC  STA $DC00
    EADA: D0 CC     BNE $EAA8

    Jump from $EACF:

    EADC: 68        PLA

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