CD-ROM Interface - Read VTOC (Volume Descriptor)

Input

DOS1 N DOS2 N

DOS3

Y DOS5 Y

Output

AX

15h 05h  Error Code AX

BX

        BX

CX

 Drive Number (0=A)     CX

DX

 Sector Index (0=1st, 1=2nd, ...)     DX

ES:BX

 2048 byte Buffer Set if Error CF
Result: 01h = Standard
        00h = Other
        FFh = Terminator


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