W83977F-A Datasheet, PDF (30/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
(3) Read A Track
PHASE R/W
Command W
W
W
W
W
W
W
W
W
Execution
Result
R
R
R
R
R
R
R
D7 D6 D5 D4 D3 D2 D1 D0
0 MFM 0 0 0 0 1 0
00
0 0 0 HDS DS1 DS0
---------------------- C ------------------------
---------------------- H ------------------------
---------------------- R ------------------------
---------------------- N ------------------------
-------------------- EOT -----------------------
-------------------- GPL -----------------------
-------------------- DTL -----------------------
-------------------- ST0 -----------------------
-------------------- ST1 -----------------------
-------------------- ST2 -----------------------
---------------------- C ------------------------
---------------------- H ------------------------
---------------------- R ------------------------
---------------------- N ------------------------
REMARKS
Command codes
Sector ID information prior
to command execution
Data transfer between the
FDD and system; FDD
reads contents of all
cylinders from index hole to
EOT
Status information after
command execution
Sector ID information after
command execution
(4) Read ID
PHASE
R/W
D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
Command W 0 MFM 0 0 1 0 1 0 Command codes
W 0 0 0 0 0 HDS DS1 DS0
Execution
The first correct ID
information on the cylinder
is stored in Data Register
Result
R
-------------------- ST0 -----------------------
Status information after
R
-------------------- ST1 -----------------------
command execution
R
-------------------- ST2 -----------------------
R
---------------------- C ------------------------
Disk status after the
R
R
---------------------- H ------------------------
---------------------- R ------------------------
command has been
completed
R
---------------------- N ------------------------
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