Specifications

Chipset and I/O Map
EPC-100 Hardware Reference A-7
VGA
I/O Addr Functional group Usage
3B4 VGA CRT Controller index
3B5 CRT Controller data
3BA Feature control output, Input status
3C0 Attribute controller Index/Data
3C1 Attribute controller Index/Data
3C2 Miscellaneous output, Input status
3C3 Sleep
3C4 Sequencer Index
3C5 Sequencer Data
3C6 Video DAC pixel mask, Hidden DAC
register
3C7 Pixel address read mode, DAC state
3C8 Pixel mask write mode
3C9 Pixel data
3CA Feature control readback
3CC Miscellaneous output readback
3CE Graphics controller index
3CF Graphics controller data
3D4 CRT controller index
3D5 CRT controller data
3DA Feature control, pinput status
3F0 Configuration 37C651 Super I/O Combo
chip
3F1 Configuration 37C651 Super I/O Combo
chip
46E8 VGA Adapter Sleep