GM82C765B Datasheet, PDF (26/36 Pages) Hynix Semiconductor – FLOPPY DISK SUBSYSTEM CONTROLLER

GM82C765B
TABLE 18. SCAN EQUAL
PHASE
COMMAND
R/W D7 D6 D5 D4
W MT MF SK 1
W
XXXX
D3 D2 D2 D0
REMARKS
0
X
0
HS
0
US1
1
US0
Command Codes
W
C
Sector ID information prior to command
W
H
execution.
W
R
W
N
W
EOT
W
GPL
W
STP
EXECUTION
Data transfer between FDD and main
system
RESULTS
R
R
R
R
R
R
R
STO
Status information after command
ST1
execution.
ST2
C
Sector ID information after command
H
execution.
R
N
TABLE 19. SCAN LOW OR EQUAL
PHASE
COMMAND
R/W D7 D6 D5 D4
W MT MF SK 1
W
XXXX
D3 D2 D2 D0
REMARKS
1
X
0
HS
0
US1
1
US0
Command Codes
W
C
Sector ID information prior to ommand
W
H
execution.
W
R
W
N
W
EOT
W
GPL
W
STP
EXECUTION
Data transfer between FDD and main
system
RESULTS
R
R
R
R
R
R
R
STO
Status information after command
ST1
execution.
ST2
C
Sector ID information after command
H
execution.
R
N
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