w83877atd Winbond Electronics Corp America, w83877atd Datasheet - Page 23

• Manufacturer Part Number: w83877atd
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

OW:
PCN:
POLL:
PRETRK:
R:
RCN:
R/W:
SC:
SK:
SRT:
ST0:
ST1:
ST2:
ST3:
WG:
2.1.9 FDC Instruction Sets
(1) Read Data
Command
Result
Execution
PHASE
R/W
Overwritten
Present Cylinder Number
Polling Disable
Precompensation Start Track Number
Record
Relative Cylinder Number
Read/Write
Sector/per cylinder
Skip deleted data address mark
Step Rate Time
Status Register 0
Status Register 1
Status Register 2
Status Register 3
Write gate alters timing of WE
W
W
W
W
W
W
W
W
W
R
R
R
R
R
R
R
D7
MT
0
-------------------- EOT -----------------------
-------------------- GPL -----------------------
-------------------- DTL -----------------------
-------------------- ST0 -----------------------
-------------------- ST1 -----------------------
-------------------- ST2 -----------------------
---------------------- C ------------------------
---------------------- H ------------------------
---------------------- R ------------------------
---------------------- N ------------------------
---------------------- C ------------------------
---------------------- H ------------------------
---------------------- R ------------------------
---------------------- N ------------------------
MFM
D6
0
D5
SK
0
D4
0
0
D3
0
0
- 19 -
HDS
D2
1
DS1
D1
1
Publication Release Date: April 1998
DS0
D0
0
Command codes
Sector ID information
prior to command
execution
Data transfer between the
FDD and system
Status information after
command execution
Sector ID information
after command execution
W83877ATF
REMARKS
Version 0.51