$C4D8/50392:   ?

C4D8: A2 FF     LDX #$FF
C4DA: 8E 53 02  STX $0253
C4DD: E8        INX
C4DE: 8E 8A 02  STX $028A
C4E1: 20 89 C5  JSR $C589
C4E4: F0 06     BEQ $C4EC
C4E6: 60        RTS
C4E7: 20 94 C5  JSR $C594
C4EA: D0 FA     BNE $C4E6
C4EC: A5 7F     LDA $7F
C4EE: 55 E2     EOR $E2,X
C4F0: 4A        LSR
C4F1: 90 0B     BCC $C4FE
C4F3: 29 40     AND #$40
C4F5: F0 F0     BEQ $C4E7
C4F7: A9 02     LDA #$02
C4F9: CD 8C 02  CMP $028C
C4FC: F0 E9     BEQ $C4E7
C4FE: BD 7A 02  LDA $027A,X
C501: AA        TAX
C502: 20 A6 C6  JSR $C6A6
C505: A0 03     LDY #$03
C507: 4C 1D C5  JMP $C51D
C50A: BD 00 02  LDA $0200,X
C50D: D1 94     CMP ($94),Y
C50F: F0 0A     BEQ $C51B
C511: C9 3F     CMP #$3F
C513: D0 D2     BNE $C4E7
C515: B1 94     LDA ($94),Y
C517: C9 A0     CMP #$A0
C519: F0 CC     BEQ $C4E7
C51B: E8        INX
C51C: C8        INY
C51D: EC 76 02  CPX $0276
C520: B0 09     BCS $C52B
C522: BD 00 02  LDA $0200,X
C525: C9 2A     CMP #$2A
C527: F0 0C     BEQ $C535
C529: D0 DF     BNE $C50A
C52B: C0 13     CPY #$13
C52D: B0 06     BCS $C535
C52F: B1 94     LDA ($94),Y
C531: C9 A0     CMP #$A0
C533: D0 B2     BNE $C4E7
C535: AE 79 02  LDX $0279
C538: 8E 53 02  STX $0253
C53B: B5 E7     LDA $E7,X
C53D: 29 80     AND #$80
C53F: 8D 8A 02  STA $028A
C542: AD 94 02  LDA $0294
C545: 95 DD     STA $DD,X
C547: A5 81     LDA $81
C549: 95 D8     STA $D8,X
C54B: A0 00     LDY #$00
C54D: B1 94     LDA ($94),Y
C54F: C8        INY
C550: 48        PHA
C551: 29 40     AND #$40
C553: 85 6F     STA $6F
C555: 68        PLA
C556: 29 DF     AND #$DF
C558: 30 02     BMI $C55C
C55A: 09 20     ORA #$20
C55C: 29 27     AND #$27
C55E: 05 6F     ORA $6F
C560: 85 6F     STA $6F
C562: A9 80     LDA #$80
C564: 35 E7     AND $E7,X
C566: 05 6F     ORA $6F
C568: 95 E7     STA $E7,X
C56A: B5 E2     LDA $E2,X
C56C: 29 80     AND #$80
C56E: 05 7F     ORA $7F
C570: 95 E2     STA $E2,X
C572: B1 94     LDA ($94),Y
C574: 9D 80 02  STA $0280,X
C577: C8        INY
C578: B1 94     LDA ($94),Y
C57A: 9D 85 02  STA $0285,X
C57D: AD 58 02  LDA $0258
C580: D0 07     BNE $C589
C582: A0 15     LDY #$15
C584: B1 94     LDA ($94),Y
C586: 8D 58 02  STA $0258
C589: A9 FF     LDA #$FF
C58B: 8D 8F 02  STA $028F
C58E: AD 78 02  LDA $0278
C591: 8D 79 02  STA $0279
C594: CE 79 02  DEC $0279
C597: 10 01     BPL $C59A
C599: 60        RTS
C59A: AE 79 02  LDX $0279
C59D: B5 E7     LDA $E7,X
C59F: 30 05     BMI $C5A6
C5A1: BD 80 02  LDA $0280,X
C5A4: D0 EE     BNE $C594
C5A6: A9 00     LDA #$00
C5A8: 8D 8F 02  STA $028F
C5AB: 60        RTS

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