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