     $D572/54642:   DOS mismatch error

    Jump from $D53D, $EE53:

    D572: 20 52 D5  JSR $D552       ; get track and sector number
    D575: A9 73     LDA #$73
    D577: 4C 45 E6  JMP $E645       ; 73, 'cbm dos v2.6 1541'

    Jump from $D529, $D548:

    D57A: A6 F9     LDX $F9         ; buffer number
    D57C: 68        PLA
    D57D: 8D 4D 02  STA $024D       ; command code for disk controller
    D580: 95 00     STA $00,X       ; in command register
    D582: 9D 5B 02  STA $025B,X     ; and write in table
    D585: 60        RTS

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