cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 321
cs5535
Manufacturer Part Number
cs5535
Description
Geode Cs5535 Companion Multi-function South Bridge
Manufacturer
National Semiconductor Corporation
Datasheet
1.CS5535.pdf
(555 pages)
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Revision 0.8
Floppy Port Register Descriptions
5.7.1
5.7.1.1
MSR Address
Type
Reset Value
5.7.1.2
MSR Address
Type
Reset Value
Bit
7:0
Bit
7:0
7
7
Floppy Port Specific MSRs
Floppy Port 3F2h Shadow (FLPY_3F2_SHDW)
Floppy Port 3F7h Shadow (FLPY_3F7_SHDW)
Name
FLPY_PORT_3F2
_VAL
Name
FLPY_PORT_3F7
_VAL
51400030h
RO
xxh
51400031h
RO
xxh
6
6
Description
Floppy Port Shadow Register Value Last Written to I/O Port 3F2h. Required for
support of FDC power ON/OFF and Zero Volt Suspend/Resume coherency.
This register is a copy of an I/O register that cannot safely be directly read. Value in reg-
ister is not deterministic of when the register is being read. It is provided here to assist
in a Save-to-Disk operation.
Description
Floppy Port Shadow Register Value Last Written to I/O Port 3F7h. Required for
support of FDC power ON/OFF and Zero Volt Suspend/Resume coherency.
This register is a copy of an I/O register that cannot safely be directly read. Value in reg-
ister is not deterministic of when the register is being read. It is provided here to assist
in a Save-to-Disk operation.
5
5
FLPY_3F2_SHDW Bit Descriptions
FLPY_3F7_SHDW Bit Descriptions
FLPY_3F2_SHDW Register Map
FLPY_3F7_SHDW Register Map
(Continued)
FLPY_PORT_3F2_VAL
FLPY_PORT_3F7_VAL
4
4
321
3
3
2
2
1
1
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