$D0EB/53483:   Open channel for reading

Jump from $C6E2, $C9C3, $CB45, $CDE7, $D39B, $D90E, $DE3B, $E20F, $E680,
          $E90A:

D0EB: A5 83     LDA $83         ; secondary address
D0ED: C9 13     CMP #$13        ; 19
D0EF: 90 02     BCC $D0F3       ; smaller?
D0F1: 29 0F     AND #$0F

Jump from $D0EF:

D0F3: C9 0F     CMP #$0F
D0F5: D0 02     BNE $D0F9
D0F7: A9 10     LDA #$10        ; 16

Jump from $D0F5:

D0F9: AA        TAX
D0FA: 38        SEC
D0FB: BD 2B 02  LDA $022B,X
D0FE: 30 06     BMI $D106
D100: 29 0F     AND #$0F
D102: 85 82     STA $82
D104: AA        TAX
D105: 18        CLC             ; flag for ok

Jump from $D0FE:

D106: 60        RTS

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