Index (Continued)
frame buffer address
host address
refresh address
166
166
166
169
166
171
171
171
168
168
168
168
168
168
168
168
168
168
168
171
VGA Memory Addresses
VGA Memory Organization
VGA Range Detection
VGA Sequencer
VGA Video BIOS
VGA Video Refresh
All Points Addressable mode (APA)
attribute controller (ATTR)
CGA mode
Chain 4 mode
ClockSelect field
ColorPlaneEnable register
CRT controller (CRTC)
LineCompare register
Miscellaneous Output register
ShiftRegister field
VGA Write/Read Path
Video Data Bus
VID_CLK
31
Video Interface Signals
CRT Horizontal Sync
CRT Vertical Sync
30
31
Display Enable
31
Dotclock
30
Flat Panel Horizontal Sync
Flat Panel Vertical Sync
Graphics Pixel Data Bus
Pixel Port Clock
31
31
31
30
Video Clock
30
Video Data Bus
31
Video Ready
31
Video Valid
31
video refresh
166
88
Virtual 8086 Mode (V86)
Virtual Subsystem Architecture (VSA)
Virtual VGA
165
165
167
167
167
167
167
167
167
167
168
172
ColorCompare register
ColorDon’tCare register
Datapath Elements
read mode unit
write-mode unit
DataRotate register
ReadMapSelect register
SetReset register
SMI Generation
Virtual VGA Register Descriptions
VIrtual VGA Registers
GP_VGA_WRITE (8140h-8143h)
Virtual VGA Registers
GP_VGA_BASE VGA (8210h-8213h)
GP_VGA_LATCH (8214h-8217h)
GP_VGA_READ (8144h-8147h)
172
172
172
172
X
XpressAUDIO
165
Revision 3.1
243
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