Intel E3815 FH8065301567411 Data Sheet
Product codes
FH8065301567411
Intel
®
Atom™ Processor E3800 Product Family
934
Datasheet
14.11.260 VGACNTRL—Offset 71400h
VGA Display Plane Control Register
Access Method
Default: 00000000h
Bit
Range
Default &
Access
Field Name (ID): Description
31:16
0b
RO
RESERVED:
Write as zero (RO)
15:8
0b
RO
QUEUE_FREE_ENTRY_COUNT_RO:
This value indicates the number of free entries in
the queue at the time that the register was read. The total number of entries in the
queue is the sum of the occupied entry count and the free entry count.
7:0
0b
RO
QUEUE_OCCUPIED_ENTRY_COUNT_RO:
This value indicates the number of
occupied entries in the queue at the time that the register was read. The total number
of entries in the queue is the sum of the occupied entry count and the free entry count.
Type:
Memory Mapped I/O Register
(Size: 32 bits)
Offset:
GTTMMADR_LSB Type:
PCI Configuration Register (Size: 32
bits)
GTTMMADR_LSB Reference:
GTTMMADR_LSB Reference:
[B:0, D:2, F:0] + 10h
31
28
24
20
16
12
8
4
0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
VG
A_DISP
LA
Y_D
IS
A
BL
E
VGA_POP_U
P_2X_CENTE
RED_MOD
E
_SCALING
VG
A_P
IP
E
_SE
LEC
T
RES
E
RVE
D
_
V
G
A_BORDE
R
_ENABL
E
VG
A_C
E
NT
E
R
ING_E
N
A
B
LE
VG
A_P
A
LET
T
E_REA
D
_SE
LEC
T
VG
A_P
A
LE
TT
E
_
A
_
W
R
IT
E
_
DISA
B
LE
DU
A
L_P
IPE
_
VG
A_P
A
LET
T
E_B_WRITE_D
IS
A
BL
E
LEGACY_VG
A
_8_
B
IT
_
PA
LET
T
E
_
ENABL
E
PA
LE
TT
E
_
B
Y
PA
S
S
_
T
E
S
T
_
M
O
D
E
NINE_DO
T
_D
ISABL
E
RES
E
RVE
D
RE
SERV
ED__1
BLINK_DUTY
_CY
C
LE
VS
Y
N
C_B
LINK
_
R
A
TE
Bit
Range
Default &
Access
Field Name (ID): Description
31
0b
RW
VGA_DISPLAY_DISABLE:
This bit will disable the VGA compatible display mode. It
has no effect on VGA register or A0000-BFFFF memory aperture accesses which are
controlled by the PCI configuration and VGA register settings. VGA display should only
be enabled if all display planes other than VGA are disabled. After enabling the VGA,
most display planes need to stay disabled, only the VGA popup (cursor A) can be
enabled. The VGA display is never trusted. No secrets are allowed in the pre-allocated
memory and VGA is limited to access only that memory. During trusted operation (when
registers are locked via Lock), this bit will always act as if it was set to a one (disabled
VGA display).
VGA 132 Column text mode is not supported.
0 = VGA Display Enabled
1 = VGA Display Disabled