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Format of Ontrackr_VxD_Data structure

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Offset Size Description

00h

BYTE

INT 13h drive number

01h

DWORD

Delta skew value

05h

BYTE

Physical heads (Word 3 of Identify Data)

06h

BYTE

Physical sectors per track (Word 6 of Identify Data)

07h

BYTE

Multiple Block Size (Blocking factor)

08h

BYTE

Read/Write Multiple disable flags
00001000b drive supports r/w multiple
00000100b do not use read multiple
00000010b do not use write multiple

09h

WORD

Base port address (1F0/170)

0Bh

BYTE

Hardware interrupt channel (14/15)

See Also:

#00298