82091AA Datasheet, PDF (134/204 Pages) Intel Corporation – ADVANCED INTEGRATED PERIPHERAL (AIP)

82091AA
Phase R W
D7
Command W 0
Result
W1
Command W 0
W0
W
W
W
W
Execution
For Each W
Sector
W
Repeat
W
W
Result
R
R
R
R
R
R
R
Command W MT
W0
W
W
W
W
W
W
W
Execution
Result
R
R
R
R
R
R
R
Table 24 FDC Command Set (Continued)
Data Bus
D6 D5 D4
D3 D2 D1
Version
0
0
1
0
0
1
0
0
0
0
0
0
Format Track
MFM 0
0
0
0
0
N
SC
GPL
D
1
1
0
0 HDS DS1
C
H
R
N
MFM SK
0
0
ST 0
ST 1
ST 2
Undefined
Undefined
Undefined
Undefined
Scan Equal
1
0
0
0
C
H
R
N
EOT
GPL
STP
0
0
HDS DS1
ST 0
ST 1
ST 2
C
H
R
N
Remarks
D0
0 Command Codes
0 Enhanced Controller
1 Command Codes
DS0
Bytes Sector
Sector Cylinder
Gap 3
Filler Byte
Input Sector
Parameters
FDC Formats an
Entire Cylinder
Status Information
after Command
Execution
0 Command Codes
DS0
Sector ID
Information Prior
to Command
Execution
Data Compared
Between the FDD
and Main-System
Status Information
After Command
Execution
Sector ID
Information After
Command
Execution
134