F81866A Datasheet, PDF (133/210 Pages) Feature Integration Technology Inc. – 6 UARTs Super IO With 128 Bytes FIFO and Power

7.3.4IRQ Channel Select Register ⎯ Index 70h
Bit
Name
R/W Reset Default
Description
7-4
Reserved
-
-
- Reserved.
3-0
SELFDCIRQ
R/W LRESET# 06h Select the IRQ channel for FDC.
7.3.5DMA Channel Select Register ⎯ Index 74h
Bit
Name
R/W Reset Default
Description
7-3
Reserved
-
-
- Reserved.
2-0
SELFDCDMA R/W LRESET# 010 Select the DMA channel for FDC.
7.3.6FDD Mode Register ⎯ Index F0h
Bit
Name
R/W Reset Default
Description
7-5
Reserved
-
-
- Reserved.
FDC Software Write Protect.
4
FDC_SW_WP R/W LRESET# 0 0: Write protect is determined by WPT# pin.
1: Enable Write Protect.
00: Model 30 mode.
01: PS/2 mode.
3-2
IF_MODE
R/W LRESET# 11
10: Reserved.
11: AT mode (default).
0: enable burst mode.
1
FDMAMODE
R/W LRESET# 1
1: non-busrt mode (default).
0
Reserved
R/W
-
0 Reserved.
7.3.7FDD Drive Type Register ⎯ Index F2h
Bit
Name
R/W Reset Default
7-2
Reserved
-
-
- Reserved.
1-0
FDD_TYPE
R/W LRESET# 11 FDD drive type.
Description
7.3.8FDD Selection Register ⎯ Index F4h
Bit
Name
R/W Reset Default
Description
7-5
Reserved
-
-
- Reserved.
Data rate table select, refer to table A.
00: select regular drives and 2.88 format.
4-3
FDD_DRT
R/W LRESET# 00 01: reserved.
10: 2 mega tape.
11: reserved.
2
Reserved
-
-
- Reserved.
1-0
FDD_DT
R/W LRESET# 00 Drive type select, refer to table B.
F81866A
133
Jan, 2012
V0. 12P