Format table consists of the number of sectors ( 16 bits ) per track . Upper byte represents sector number, and lower byte represents format type.

The drive supports only 00H format type. Intending to maintain compatibility with previous models, the drive accepts any format type, but the function will not change.

Sector interleave is always set to one regardless of sector sequence in the format table. Data subsequent to format table are handled as “Don't care”.

FORMAT TABLE ( FIRST 86 BYTES ) (Ex. 43 logical sector mode)

0001, 0002, 0003, 0004, 0005, 0006, 0007, 0008, 0009, 0013, 0015, 0016, 0017, 0018,.0019, 001A,.......0029, 002A, 002B

DON’T CARE ( 426 BYTES ATTACHED )

0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, ........... 0000, 0000, 0000.

10.8.13 Seek

(7xh)

 

 

 

 

 

 

 

COMMAND CODE

0 1 1 1 X X X X

REGISTER

 

 

 

REGISTER SETTING

NORMAL COMPLETION

 

DR

 

drive no.

no change

 

CY

 

cylinder to seek

no change

 

HD

 

head to seek

no change

 

SN

 

 

 

no change

 

SC

 

 

 

no change

 

FT

 

 

 

no change

 

LBA

 

address to seek

no change

This command moves the R/W heads to the cylinder specified in the task files. The drive sets BSY and starts seek operation. After the completion of a seek operation, the drive asserts DSC8 , negates BSY , and return the interrupt.

If CY, HD and SN registers show invalid address, “ID Not Found” error is reported and no seek operation shall be executed. All commands related to data access possess Implied Seek function and don't need this command.

10.8.14 Toshiba Specific

COMMAND CODE 1 0 0 0 X X X X

1 0 0 1 1 0 1 0

1 1 1 1 0 0 0 0

1 1 1 1 0 1 1 1

1 1 1 1 1 0 1 X

1 1 1 1 1 1 X X

These commands are only for factory use. Host must not issue them.

8ATA-2 Notes: Prior to ATA-2 standard, this bit indicated that the device was on track. This bit may be used for other purposes in future standards. For compatibility the drive supports this bit as ATA-1 specifies. User is recommended not to use this bit.

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