F81866A
TABLE A
Data Rate Table Select
Data Rate
Selected Data Rate
DENSEL
FDD_DRT[1]
FDD_DRT[0]
DATARATE1 DATARATE0
MFM
FM
250K
150K
125K
---
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
500K
300K
250K
1Meg
500K
500K
250K
1Meg
500K
2Meg
250K
1Meg
1
0
0
1
1
0
0
1
1
0
0
1
0
0
0
250K
250K
125K
---
1
0
250K
---
1
125K
---
TABLE B
Drive Type
DRVDEN0
DENSEL
Remark
FDD_DT1
FDD_DT0
4/2/1 MB 3.5”
2/1 MB 5.25”
0
0
1/1.6/1 MB 3.5” (3-Mode )
0
1
1
1
0
1
DATARATE1
DENSEL#
DATARATE0
7.4 Parallel Port Device Configuration Registers (LDN CR03)
“-“ Reserved or Tri-State
Default Value
Register 0x[HEX]
Register Name
MSB
LSB
30
60
61
70
74
F0
Parallel Port Device Enable Register
Base Address High Register
Base Address Low Register
IRQ Channel Select Register
DMA Channel Select Register
PRT Mode Select Register
-
-
0
1
-
-
0
1
-
-
-
-
-
1
1
0
1
1
0
0
0
-
0
1
-
0
1
0
-
0
0
1
0
0
1
0
1
1
1
-
-
-
0
0
0
1
0
0
134
Jan, 2012
V0. 12P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
