gm82c765b ETC-unknow, gm82c765b Datasheet - Page 24

• Manufacturer Part Number: gm82c765b
• Description: Floppy Disk Subsystem Controller
• Manufacturer: ETC-unknow

TABLE 15. READ A TRACK
TABLE 14. WRITE DELETED DATA
EXECUTION
EXECUTION
COMMAND
COMMAND
RESULTS
RESULTS
PHASE
PHASE
R/W
R/W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
MT
D7
D7
X
X
0
MF
MF
D6
D6
X
X
D5
D5
SK
X
X
0
D4
D4
X
X
0
0
EOT
DTL
EOT
DTL
GPL
STO
GPL
STO
ST1
ST2
ST1
ST2
H
N
H
N
H
N
H
N
C
R
C
R
C
R
C
R
24
D3
D3
X
X
1
0
D2
HS
D2
HS
0
0
US1
US1
D2
D2
0
1
US0
US0
D0
D0
1
0
Command Codes
Sector ID information prior to
command execution. The four bytes
are compared against header on
floppy disk.
Data transfer between FDD and main
system
Status information after command
execution.
Sector ID information after command
execution.
Command Codes
Sector ID information prior to
command execution.
Data transfer between FDD and main
system. FDD reads all data fields from
index hole to EOT
Status information after command
execution.
Sector ID information after command
execution.
REMARKS
REMARKS
GM82C765B