INT 13H (0x13) Function 09H (0x09) Initialize fixed disk characteristics

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INT 13H (0x13)

Function 09H (0x09) >> Initialize fixed disk characteristics

Call with: AH = 09H
DL = drive
80H-FFH fixed disk

On the PC/XT Vector for INT 41H
must point to disk parameter block or, on the PC/AT and PS/2

Vector for INT 41H must point to disk
parameter block for drive 0

Vector for INT 46H must point to disk
parameter block for drive 1

Returns: If function successful
Carry flag = clear
AH = 00H

If function unsuccessful
Carry flag = set
AH = status

Comments:

This function initializes the fixed disk controller for subsequent I/O operations, using the values found in the ROM BIOS disk parameter block(s). The function is supported on fixed disk only. The parameter block format for PC and PC/XT fixed disks is as follows:

Byte(s)

Contents

00H-01H

Maximum number of cylinders

02H

Maximum number of heads

03H-04H

Starting reduced write current cylinder

05H-06H

Starting write pre compensation cylinder

07H

Maximum ECC burst length

08H

Drive option

Bit(s)

Significance (if set)

0 – 2

drive option

3 – 5

reserved (0)

6

disable ECC entries

7

disable disk-access retries

09H

Standard time-out value

0AH

Time-out value for format drive

0BH

Time-out value for check drive

0CH-0FH

Reserved

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Publishers of the Book
Number of Pages
ISBN
Price of the Book


BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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