F71872
5
4
DD
R
R
-
-
Data Error in Data Field.
The FDC detects a CRC error in the data field.
WC
Wrong Cylinder.
Set when the track address from the sector ID field is different from the track
address maintained inside the FDC.
3
2
SE
SN
R
R
-
-
Scan Equal.
Set if the equal condition is satisfied during execution of the SCAN command.
Scan Not Satisfied.
Set when the FDC cannot find a sector on the track which meets the desired
condition during any scan command.
1
0
BC
R
R
-
-
Bad Cylinder.
The track address from the sector ID field is different from the track address
maintained inside the FDC and is equal to FFh which indicates a bad track.
MD
Missing Data Address Mark.
Set when the FDC cannot detect a data address mark or a deleted data
address mark.
Status Registers 3
Bit
Name
R/W Default
Description
7
6
Reserved
-
-
-
Unused. This bit is always “0”.
WP
R
Write Protect.
Indicates the status of WPT# pin.
5
4
Reserved
T0
R
R
-
-
Unused. This bit is always “1”.
Track 0.
Indicates the status of the TRK0# pin.
3
2
Reserved.
HD
R
R
-
-
Unused. This bit is always “1”.
Head Address.
Indicates the status of the HDSEL# pin.
1
0
DS1
DS0
R
R
-
-
Drive Select.
These two bits indicate the DS1, DS0 bits in the command phase.
7.2.3.10 Digital Input Register (PC-AT Mode) Base + 7
Bit
Name
R/W Default
Description
7
DSKCHG
R
R
-
-
This bit indicates the complement of DSKCHG# disk interface input.
Reserved.
6-0 Reserved
7.2.3.11 Digital Input Register (PS/2 Mode) Base + 7
Bit
Name
R/W Default
Description
7
DSKCHG
R
-
-
-
This bit indicates the complement of DSKCHG# disk interface input.
Reserved.
6-3 Reserved
42
July, 2007
V0.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
