F71862 Datasheet, PDF (20/110 Pages) Feature Integration Technology Inc. – Super Hardware Monitor + LPC I/O

Status Register B (Model 30 Mode)  Base + 1
Bit
Name
R/W Default
Description
F71862
7 DRV2_N
6 DSB_N
5 DSA_N
4 WDATA_FF
3 RDATA_FF
2 WGATE_FF
1 DSD_N
0 DSC_N
R
- 0: a second drive has been installed.
1: a second drive has not been installed.
R
1 This bit indicates the state of DRVB# disk interface output. Not support in this
design.
R
1 This bit indicates the state of DRVA# disk interface output.
R
0 This bit is latched at the rising edge of WDATA# and is cleared by a read from
the Digital Input Register.
R
0 This bit is latched at the rising edge of RDATA# and is cleared by a read form
the Digital Input Register.
R
0 This bit is latched at the falling edge of WGATE# and is cleared by a read from
the Digital Input Register.
R
1 This bit indicates the complement of DRVD# disk interface output. Not support
in this design.
R
1 This bit indicates the complement of DRVC# disk interface output. Not support
in this design.
Digital Output Register  Base + 2
Bit
Name
R/W Default
Description
7 MOTEN3
6 MOTEN2
5 MOTEN1
4 MOTEN0
3 DAMEN
2 RESET
1 DSD_N
0 DSC_N
R
0 Motor enable 3. Not support in this design.
R
0 Motor enable 2. Not support in this design.
R/W 0 Motor enable 1. Used to control MOB#. MOB# is not support in this design.
R/W 0 Motor enable 0. Used to control MOA#.
R/W 0 DMA enable. This bit has two mode of operation.
PC-AT and Model 30 mode: write 1 will enable DMA and IRQ, write 0 will
disable DMA and IRQ.
PS/2 mode: This bit is reserved. DMA and IRQ are always enabled in PS/2
mode.
R
0 Write 0 to this bit will reset the controller. I will remain in reset condition until a 1
is written.
R
1 This bit indicates the complement of DRVD# disk interface output. Not support
in this design.
R
1 This bit indicates the complement of DRVC# disk interface output. Not support
in this design.
Tape Drive Register  Base + 3
Bit
Name
R/W Default
Description
7-6 Reserved
5-4 TYPEID
3-2 Reserved
1-0 TAPESEL
R 00 Reserved. Return 00b when read.
R
11 Reserved in normal function, return 11b when read.
If 3 mode FDD function is enabled. These bits indicate the drive type ID.
R
11 Reserved. Return 11b when read in normal function.
Return 00b when read in 3 mode FDD function.
R/W 0 These bits assign a logical drive number to be a tape drive.
20
July, 2008
V.28P