$FDA3/64931:   Write SYNC 10240 times, erase track

FDA3: AD 0C 1C  LDA $1C0C
FDA6: 29 1F     AND #$1F
FDA8: 09 C0     ORA #$C0
FDAA: 8D 0C 1C  STA $1C0C
FDAD: A9 FF     LDA #$FF
FDAF: 8D 03 1C  STA $1C03
FDB2: 8D 01 1C  STA $1C01
FDB5: A2 28     LDX #$28
FDB7: A0 00     LDY #$00
FDB9: 50 FE     BVC $FDB9
FDBB: B8        CLV
FDBC: 88        DEY
FDBD: D0 FA     BNE $FDB9
FDBF: CA        DEX
FDC0: D0 F7     BNE $FDB9
FDC2: 60        RTS

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