
P.76
Extended Indexed Register CREG C5: Flat Panel Text Mode Display Horizontal Center-
ing Control Register
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-3 LCD panel horizontal screen shift bit 0 to 3 for text mode display (in character as unit)
D4-7 Reserved
Bit 0-3
These bits are used to program the horizontal screen shift length from the left or right of panel to
actual display part. And you can get through the screen display centering .
Reserved.
Bit 4-7
Extended Indexed Register CREG C6: Flat Panel Graphics Mode Display Horizontal
Centering Control Register
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-3 LCD panel horizontal screen shift bit 0 to 3 for graphics mode display ( in character as
unit)
D4-7 Reserved
Bit 0-3
These bits are used to program the horizontal screen shift length from the left or right of panel to
actual display part. And you can get through the screen display centering.
Reserved.
Bit 4-7
Extended Indexed Register CREG C7 : 600-Line Extended CRT Vertical Total Register
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-7 Extended CRT Extended CRT vertical total bit 0 to 7 (-2)
Extended Indexed Register CREG C8 : 600-Line Extended CRT Vertical Display Enable
End Register
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-7 Extended CRT Extended CRT vertical display enable end bit 0 to 7 (-1)
Extended Indexed Register CREG C9 : 600-Line Extended CRT Vertical Blank Start
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-7
Extended CRT vertical blank start bit 0 to 7 (-1)
Extended Indexed Register CREG CA : 600-Line Extended CRT Vertical Blank End
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-7 Extended CRT vertical blank end bit 0 to 7