SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 150

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

Attributes Controller Registers
Hardware Functional Specification
Attributes Controller Index/Data Register
3C0h RW
n/a
00 - 0F EGA Palette Registers RW
n/a
10 Mode Control Register RW
EGA Palette
Bits 4, 5
Control
11 Overscan Color Register RW
Overscan
Color Bit 7
12 Color Plane Enable Register RW
n/a
13 Horizontal Panning Register RW
n/a
14 Color Select Register RW
n/a
SP1-108
index 10 Mode Control Register bit 6 - the Dummy Pel Width bit is a read/write bit that has no
effect in hardware. This bit is provided for compatibility with some software that expects to use
the value stored in this VGA-defined register bit to determine if mode 13h is set;
index 10 Mode Control Register bit 2 - the Line Graphics 8->9 Dot bit only has an effect for CRT
modes. If LCD mode is selected (AUX[0B] bits 1:0 = 0,1), then this bit is a read/write only bit with
no effect in hardware;
index 13 Horizontal Panning Register bit 3 - the Horizontal Pan Count bit 3 only has an effect for
CRT modes. If LCD mode is selected (AUX[0B] bits 1:0 = 0,1), any pan value > 07h is treated as
pan value = 0.
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3C0h W 3C1h R
n/a
n/a
Dummy
Pel Width
(see note)
Overscan
Color Bit 6
n/a
n/a
n/a
EGA Palette
Enable
Secondary
Red
Pixel Pan
Compat
Overscan
Color Bit 5
Video Status
RO status
Read 0
n/a
n/a
Attributes
Controller
Index Bit 4
Secondary
Green
n/a
Overscan
Color Bit 4
Video Status
RO status
Read 0
n/a
n/a
X12-SP-001-07
Attributes
Controller
Index Bit 3
Secondary
Blue
Blink/
Intensity
Overscan
Color Bit 3
Enable
Plane 3
Horizontal
Pan Count
Bit 3
Color Select
Bit 3
Primary
Red
Attributes
Controller
Index Bit 2
Line
Graphics
Char Code
Enable
Overscan
Color Bit 2
Enable
Plane 2
Horizontal
Pan Count
Bit 2
Color Select
Bit 2
Attributes
Controller
Index Bit 1
Primary
Green
Mono Mode
Select
Overscan
Color Bit 1
Enable
Horizontal
Pan Count
Bit 1
Color Select
Bit 1
Plane 1
Attributes
Controller
Index Bit 0
Primary
Blue
Graphics
Mode Select
Overscan
Color Bit 0
Enable
Plane 0
Horizontal
Pan Count
Bit 0
Color Select
Bit 0
411-1.0
SPC8106