GM82C803CN Datasheet, PDF (39/84 Pages) List of Unclassifed Manufacturers – 2.88 MB FDC/ Dual UARTs with FIFO/PIO(EPP/ ECP)/ IDE Interface/ S-IR/ PnP

GM82C803CN
PHASE R/W D7
COMMAND ^W
0
W
X
W
W
W
W
W
W
W
EXECUTION
RESULTS _R
R
R
R
R
R
R
D6 D5
MF SK
X
X
READ A TRACK
D4
D3 D2
0
0
0
X
X HS
C
H
R
N
EOT
GPL
DTL
ST0
ST1
ST2
C
H
R
N
D1 D0
R/W
1 0 Command Codes
DS1 DS0
Sector ID information
prior to command
execution.
Data transfer between
FDD and main system.
FDD reads all data
fields from index hole
of EOT
Status information
after command
execution
Sector ID information
after command
execution
PHASE R/W D7
COMMAND ^W
0
W
X
EXECUTION
R
RESULTS
R
R
R
R
R
R
D6 D5
MF ⁰
X
X
READ ID
D4
D3
0
1
X
X
ST0
ST1
ST2
C
H
R
N
D2 D1 D0
R/W
0
0 1 Command Codes
HS DS1 DS0
The first correct ID
information on the
cylinder is stored in
Data Register.
Status information
after command
execution
Sector ID information
after command
execution