Toshiba 4006GAH Manual Do Utilizador

 

 

Toshiba Corporation Digital Media Network Company 

 

Page 65 of 157 

© 2005, Copyright TOSHIBA Corporation All Rights Reserved 

 

 
 

COMMAND CODE 

0 1 0 0 0 0 0 0

REGISTER 

 

REGISTER SETTING 

NORMAL COMPLETION 

DR 

drive no. 

no change 

CY 

starting cylinder 

last possible 

HD 

starting head 

last possible 

SN 

starting sector 

start sector 

SC 

no. of sector to be read 

00H 

LBA 

starting address 

last address 

 

This command is identical to a Read command except that the drive has read the data from the media, and 
the DRQ bit is not set and no data is sent to the host.    This allows the system to verify the integrity of the 
drive.    A single interrupt is generated upon completion of a command or when an error occurs.   

   

 

COMMAND CODE 

0 1 0 0 0 0 1 0

 

REGISTER 

 

REGISTER SETTING 

NORMAL COMPLETION 

DR 

 

drive no. 

no change 

LBA 

Low 

Current 

Previous 

LBA(7:0) 

LBA(31:24) 

HOB=0
HOB=1

last address 
last address 

LBA 

Mid 

Current 

Previous 

LBA(15:8) 

LBA(39:32) 

HOB=0
HOB=1

last address 
last address 

LBA 
High 

Current 

Previous 

LBA(23:16) 
LBA(47:40) 

HOB=0
HOB=1

last address 
last address 

SC Current 

Previous 

sector count(7:0) 

sector count(15:8) 

HOB=0
HOB=1

00H 
00H 

FT Current 

Previous 

reserved 
reserved 

HOB=0
HOB=1

no change 
no change 

 

 

This command is identical to a Read EXT command except that the drive has read the data from the media, 
and the DRQ bit is not set and no data is sent to the host.    This allows the system to verify the integrity of 
the drive.    A single interrupt is generated upon completion of a command or when an error occurs.   

This command is available in LBA addressing only.