SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 84
SPC8104
Manufacturer Part Number
SPC8104
Description
VGA LCD CONTROLLER
Manufacturer
S-MOS Systems
Datasheet
1.SPC8104.pdf
(306 pages)
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VUnderline Location(Index 14h)
Vertical Blanking Start (Index 15h)
Vertical Blanking End (Index 16h)
Mode Control (Index 17h)
Mode Control Register (Index 10h)
Overscan Register (Index 11h)
Color Plane Enable (Index 12h)
Color Select (Index 14h)
Mode Control Register (Index 05h)
Hardware Functional Specification
SP1-58
bit 6
bit 5
bit 6
bit 2
bit 3
bit 7
Attribute Controller Registers (3C0h,3C1h)
bit 2
bit 6
bit 7,6
bits 4,5
bits 3,2
Graphics Controller Registers (3CEh,3CFh)
bit 6
DAC Pixel Mask Register (3C6h)
S-MOS Systems, Inc. • Tel: (408) 922-0200 • Fax: (408) 922-0238 • http://www.smos.com
3/5 Refresh
Read / write only. No other effect in hardware.
Count-by-4
Read / write only. No other effect in hardware.
Double Word Select
Read / write only. No other effect in hardware.
Read / write only. No other effect in hardware.
Read / write only. No other effect in hardware.
HRTC/2 Select
Read / write only. No other effect in hardware.
Count-by-2
Read / write only. No other effect in hardware.
Enable Retraces
Read only as 1. Retraces always enabled.
8>9 Dot Copy
Deleted.
Pel Width
Read / write only. No other effect in hardware.
Overscan Color bits 7,6
Read / write only. No other effect in hardware.
Video Status MUX. Read only 0,0. IBM diagnostic use only.
Color Select bits 3,2
Deleted. Not required since only 64x4 lookup table.
256-Color Mode
Read / write only. No other effect in hardware.
Read / write only. No other effect in hardware.
X15-SP-001-08.1
412-1.0
SPC8104
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