5.3 Host Commands
C141-E104-03EN
5-27
A host system can select the following transfer mode using the SET FEATURES
command.
•
Multiword DMA transfer mode 0 to 2
•
Ultra DMA transfer mode 0 to 4
At command issuance (I/O registers setting contents)
1F7
H
(CM)
1
1
0
0
1
0
1
R
1F6
H
(DH)
x
L
x
DV
Start head No. /LBA
[MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
Start cylinder No. [MSB] / LBA
Start cylinder No. [LSB] / LBA
Start sector No. / LBA [LSB]
Transfer sector count
xx
At command completion (I/O registers contents to be read)
1F7
H
(ST)
Status information
1F6
H
(DH)
x
L
x
DV
End head No. /LBA [MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
End cylinder No. [MSB] / LBA
End cylinder No. [LSB] / LBA
End sector No. / LBA [LSB]
00 (*1)
Error information
*1
If the command is terminated due to an error, the remaining number of
sectors of which data was not transferred is set in this register.
(8) WRITE VERIFY (X’3C’)
This command operates similarly to the WRITE SECTOR(S) command except
that the device verifies each sector immediately after being written. The verify
operation is a read and check for data errors without data transfer. Any error that
is detected during the verify operation is posted.
After all sectors are verified, the last interruption (INTRQ for command
termination) is generated.
Содержание DISK DRIVES MHL2300AT
Страница 1: ...C141 E104 03EN MHL2300AT MHM2200AT MHM2150AT MHM2100AT DISK DRIVES PRODUCT MANUAL ...
Страница 3: ...This page is intentionally left blank ...
Страница 5: ...This page is intentionally left blank ...
Страница 9: ...This page is intentionally left blank ...
Страница 11: ...This page is intentionally left blank ...
Страница 13: ...This page is intentionally left blank ...
Страница 37: ...This page is intentionally left blank ...
Страница 40: ...3 1 Dimensions C141 E104 03EN 3 3 Figure 3 1 Dimensions MHM series 2 2 ...
Страница 52: ...3 4 Jumper Settings C141 E104 03EN 3 15 Figure 3 16 Example 2 of Cable Select drive drive ...
Страница 53: ...This page is intentionally left blank ...
Страница 77: ...This page is intentionally left blank ...
Страница 185: ...Interface 5 108 C141 E104 03EN Figure 5 10 Data transfer timing ...
Страница 223: ...This page is intentionally left blank ...
Страница 227: ...This page is intentionally left blank ...
Страница 229: ...This page is intentionally left blank ...
Страница 232: ......