System information

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H VGA

H.2 VGA Register

I/O Port Register Name

0x3C0 Attribute Address/Data Register

0x3C1 Attribute Data Read Register

0x3C2h (Read) Input Status #0 Register

0x3C2h (Write) Miscellaneous Output Register

0x3C4h Sequencer Address Register

0x3C5h Sequencer Data Register

0x3C7h (Read) DAC State Register

0x3C7h (Write) DAC Address Read Mode Register

0x3C8h DAC Address Write Mode Register

0x3C9h DAC Data Register

0x3CAh (Read) Feature Control Register

0x3CCh (Read) Miscellaneous Output Register

0x3CEh Graphics Controller Address Register

0x3CFh Graphics Controller Data Register

0x3D4h CRTC Controller Address Register

0x3D5h CRTC Controller Data Register

0x3DAh (Read) Input Status #1 Register

0x3DAh (Write) Feature Control Register

Table H.2: VGA I/O Ports.

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