F71862
1-0 DRATE
W
10
These bit determine the data rate of the floppy controller. See DRATE bits in
Data Rate Select Register.
FDC Commands
Terminology:
C
Cylinder Number 0 -256
Data Pattern
Step Direction
0: step out
1: step in
D
DIR
DS0
DS1
DTL
EC
EOT
EFIFO
Drive Select 0
Drive Select 1
Data Length
Enable Count
End of Track
Enable FIFO
0: FIFO is enabled.
1: FIFO is disabled.
Enable Implied Seek
EIS
FIFOTHR FIFO Threshold
GAP
GPL
H/HDS
HLT
HUT
LOCK
Alters Gap Length
Gap Length
Head Address
Head Load Time
Head Unload Time
Lock EFIFO, FIFOTHR, PTRTRK bits.
Prevent these bits from being affected by software reset.
MFM
MFM or FM mode
0: FM
1: MFM
MT
N
Multi-Track
Sector Size Code. All values up to 07h are allowable.
00:
01:
..
128 bytes
256 bytes
..
07
16 Kbytes
NCN
ND
OW
New Cylinder Number
Non-DMA Mode
Overwritten
PCN
POLL
Present Cylinder Number
Polling disable
0: polling is enabled.
1: polling is disabled.
PRETRK Precompensation Start Track Number
R
RCN
SC
SK
SRT
ST0
ST1
ST2
ST3
WGATE
Sector address
Relative Cylinder Number
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.
25
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
