1 VirtualBox BochsGA->VGA Translation (From DevVGA.cpp)
2 - Assuming non 4bpp mode
4 GR[0x06].3,2,0 = 0,1,1 Miscellaneous Graphics Register Mem Map = 64K@A0000, AlphaNum Disable)
5 CR[0x17].1,0 = 1,1 CRTC Mode Control Register MAP14,MAP13
6 CR[0x13] = vbe_line_offset / 8 Offset Register (aka Pitch)
7 CR[0x01] = virtual_width / 8 - 1 End Horizontal Display Register
8 CR[0x12] = height Virtical Display End Register
9 CR[0x07].6,2 = height >> 8 Overflow Register [VDE9,VDE8]
10 CR[0x18] = 0xFF Line Compare Register
11 CR[0x07].4 = 1 Overflow Register [LC8]
12 CR[0x09].6 = 1 Maximum Scan Line Register [LC9]
14 SR[4].3 = 1 Sequencer Memory Mode Chain 4 Enable
15 SR[2].3,2,1,0 = 1,1,1,1 Map Mask Register All planes enabled
18 GR[0x05].6-5 = 2 Graphics Mode Register 256 color shift mode
19 CR[0x09].7,4-0 = 0,0 Maximum Scan Line Register [SD=0,MSL=0]