Corel VNC II

page 2

PCI I/O Space

VGA

Address Width Meaning
7C0003CF/C0 b ext video mem address: lo byte
7C0003CF/C1 b ext video mem address: mid byte
7C0003CF/C2 b ext video mem address: hi byte + (horiz phase shift << 5)
7C0003CF/C3 b ext video source width: lo byte
7C0003CF/C4 b ext video source width: hi 2 bits + (ext video source height << 4)
7C0003CF/C5 b ext video horiz start pixel: lo byte
7C0003CF/C6 b ext video horiz start pixel: hi byte
7C0003CF/C7 b ext video horiz end pixel: lo byte
7C0003CF/C8 b ext video horiz end pixel: hi byte
7C0003CF/C9 b ext video vert start line: lo byte
7C0003CF/CA b ext video vert start line: hi byte
7C0003CF/CB b ext video vert end line: lo byte
7C0003CF/CC b ext video vert end line: hi byte
7C0003CF/CD b ext video source win width: lo byte
7C0003CF/CE b ext video color compare: red
7C0003CF/CF b ext video color compare: green
7C0003CF/D0 b ext video color compare: blue
7C0003CF/D1 b ext video horiz DAA init value: lo byte
7C0003CF/D2 b ext video horiz DAA init value: hi byte
7C0003CF/D3 b ext video horiz DAA incr: lo byte
7C0003CF/D4 b ext video horiz DAA incr: hi byte
7C0003CF/D5 b Extended Video Vertical DDA Initial Value Low 
7C0003CF/D6 b Extended Video Vertical DDA Initial Value High
7C0003CF/D7 b Extended Video Vertical DDA Increment Value Low
7C0003CF/D8 b Extended Video Vertical DDA Increment Value High
7C0003CF/D9 b Extended Video Format Control; video capture 
0=4:2:2 YUV, 1=5:5:5 RGB, 2=5:6:5 RGB, 3=8:8:8 RGB, 4=8:8:8 RGB (32 bit) 
0=0.5 linearity zoom-out, 8=duplicate pixel zoom-out 
0x20=modify third duplicated pixel 
0x40=double horiz pixels 
0x80=UV offset by 128
7C0003CF/DC b Extended Video display Control I 
1=video pixels go to internal ram 
2=ignore color compare register 
4=do not clip to (16,235)(16,240) 
8=U/V data is averaged 
0x10=Y offset by 128 
0x20=vert interpolation off 
0x40=video out full window (no crt data) 
0x80=enable video window
7C0003CF/E8 b Extended VFAC Control And Capture Mode I 
1=capture enable 
2=VFAC enable 
4=freeze capture data 
8=sync freeze capture data 
0x10=select "valid frame" signal source 
0x40=select Philips mode 
0x80=modify vert interpolation clock
7C0003CF/E9 b Extended VFAC Control And Capture Mode II 
1=invert the "video data valid" signal 
2=invert the "graphic ready" output signal 
4=invert the "data clock" input 
8=invert the hsync input 
0x10=invert the vsync input 
0x20=invert the frame odd/even input 
0x40=invert the blank output 
0x80=invert the (other) vsync input
7C0003CF/EB b Extended Capture Memory Starting Address Low
7C0003CF/EC b Extended Capture Memory Starting Address Mid
7C0003CF/ED b Extended Capture Memory Starting Address High + (vid capt map width hi << 6)
7C0003CF/EE b Extended Capture Memory Fetch Pitch Low
7C0003CF/EF b Extended Capture Control Miscellaneous 
1=horiz divide factor 
2=horiz divide factor is 4 
4=odd/even frame signals data good 
8=HSYNC divided by 2 
0x10=SYNCTZ set hi 
0x20=SYNCTZ or'd 
0x40=?? 
0x80=video display has been used
7C0003CF/60 b Extended Capture Horizontal Starting Low
7C0003CF/61 b Extended Capture Horizontal Starting High
7C0003CF/62 b Extended Capture Horizontal Ending Low
7C0003CF/63 b Extended Capture Horizontal Ending High
7C0003CF/64 b Extended Capture Vertical Starting Low
7C0003CF/65 b Extended Capture Vertical Starting High
7C0003CF/66 b Extended Capture Vertical Ending Low
7C0003CF/67 b Extended Capture Vertical Ending High
7C0003CF/68 b Extended Capture Horizontal DDA Initial Value Low
7C0003CF/69 b Extended Capture Horizontal DDA Initial Value High
7C0003CF/6A b Extended Capture Horizontal DDA Increment Value Low
7C0003CF/6B b Extended Capture Horizontal DDA Increment Value High
7C0003CF/6C b Extended Capture Vertical DDA Initial Value Low
7C0003CF/6D b Extended Capture Vertical DDA Initial Value High
7C0003CF/6E b Extended Capture Vertical DDA Increment Value Low
7C0003CF/6F b Extended Capture Vertical DDA Increment Value High
7C0003CF/80 b Extended Capture Pip Horizontal Starting Low
7C0003CF/81 b Extended Capture Pip Horizontal Starting High
7C0003CF/82 b Extended Capture Pip Horizontal Ending Low
7C0003CF/83 b Extended Capture Pip Horizontal Ending High
7C0003CF/84 b Extended Capture Pip Vertical Starting Low
7C0003CF/85 b Extended Capture Pip Vertical Starting High
7C0003CF/86 b Extended Capture Pip Vertical Ending Low
7C0003CF/87 b Extended Capture Pip Vertical Ending High
7C0003CF/8A b Extended Video Chroma Compare Register Red High
7C0003CF/8B b Extended Video Chroma Compare Register Red Low
7C0003CF/8C b Extended Video Chroma Compare Register Green High
7C0003CF/8D b Extended Video Chroma Compare Register Green Low
7C0003CF/8E b Extended Video Chroma Compare Register Blue High
7C0003CF/8F b Extended Video Chroma Compare Register Blue Low
7C0003CF/A0 b Extended Horizontal Video Scramble Seed Number Low
7C0003CF/A1 b Extended Vertical Video Scramble Seed Number Low
7C0003CF/A2 b Extended Horizontal/Vertical Video Scramble Seed Number High
7C0003CF/A4 b Extended CCIR656 Capture Mode I 
1=enable 8 bit data 
2=use CCIR656 
0x20=adjust UV
7C0003CF/A5 b Extended CCIR656 Capture Mode II
7C0003CF/A6 b Extended Video Bus Master I 
1=bus master on 
4=clear bus master
7C0003CF/A7 b Extended Video Bus Master Address Low
7C0003CF/A8 b Extended Video Bus Master Address Mid
7C0003CF/A9 b Extended Video Bus Master Address High
7C0003CF/AA b Extended Video Bus Master Address Offset
7C0003CF/AB b Extended Display ZRGB Control I
7C0003CF/AC b Extended Double Buffer Control I 
1=flip buffers 
2=close off a buffer 
4=force buffer 
0x10=flip status (read only) 
0x20=clear flip status 
0x40=flip request
7C0003CF/AD b Extended Double Buffer Starting Address AB High
7C0003CF/AE b Extended TV Control
7C0003CF/AF b Extended Test Control
 
NAME PORT INDEX VGA RESET ;Remarks
Graphics Latched Data Readback n 3D5 22 RO NO ;crt to gc
Attribute Toggle Readback 3D5 24 RO No ;crt to ac
Attribute Index Readback 3D5 26 RO No ;crt to ac
TV First Skip Line Address Low 3D5 40 R/W
TV First Skip Line Address High 3D5 41 R/W
TV Line Fetch Counter 3D5 43 R/W
TV Max and Skip Lines 3D5 44 R/W
TV Interpolated Miscellaneous Control 3D5 45 R/W
TV First Delta Lines Address Low 3D5 46 R/W
TV First Delta Lines Address High 3D5 47 R/W
Extended Start Address 3CF 10 R/W YES ;crt
Extended CRT Vertical Overflow 3CF 11 R/W YES
Extended CRT IRQ Control  3CF 12 R/W YES 1=emable irq
Extended CRT Testing Reg 3CF 13 R/W YES
Extended Number Of Fetch Reg0 3CF 14 R/W YES
Extended Number Of Fetch Reg1 3CF 15 R/W YES
Extended HSYNC/VSYNC Control Reg 3CF 16 R/W YES
Extended CRT Vertical Counter 0 3CF 18 R/W YES
Extended CRT Vertical Counter 1 3CF 19 R/W YES
Extended Bus Control 3CF 30 R/W Yes ;BIU 
1=2MB ram 
4=no wait states 
0x20=enable PCI burst mode
Extended Segment Write Pointer 3CF 31 R/W Yes ;Biu
Extended Segment Read Pointer 3CF 32 R/W Yes ;Biu
Extended BIU Miscellaneous Control 3CF 33 R/W Yes ;Biu 
1=linear memory enable
Extended Linear Address 0 3CF 34 R/W Yes ;BIU
Extended Linear Address 1 3CF 35 R/W Yes ;BIU
Function Control 3CF 3C R/W Yes ;Biu
BIU Bus Master Control 3CF 3E R/W Yes ;Biu 
1=bus master enable 
2=burst enable 
4=back-to-back enable
BIG ENDIAN Bus Swap 3CF 3F R/W Yes ;Biu
Bus Master Program Big ENDIAN Swap 3CF 3EX R/W Yes ;Biu
Bus Master Video Big ENDIAN Swap 3CF 3FX R/W Yes ;Biu
Extended V2 Video Memory Starting Address Low 3CF X40 R/W
Extended V2 Video Memory Starting Address Mid 3CF X41 R/W
Extended V2 Video Memory Starting Address High 3CF X42 R/W
Extended V2 Video Source Map Width Low 3CF X43 R/W
Extended V2 Video Source Map Width High 3CF X44 R/W ;64 bits
Extended V2 Video Display Horizontal Starting Pixel Low 3CF X45 R/W
Extended V2 Video Display Horizontal Starting Pixel High 3CF X46 R/W
Extended V2 Video Display Horizontal Ending Pixel Low 3CF X47 R/W
Extended V2 Video Display Horizontal Ending Pixel High 3CF X48 R/W
Extended V2 Video Display Vertical Starting Line Low 3CF X49 R/W
Extended V2 Video Display Vertical Starting Line High 3CF X4A R/W
Extended V2 Video Display Vertical Ending Line Low 3CF X4B R/W
Extended V2 Video Display Vertical Ending Line High 3CF X4C R/W
Extended V2 Video Display Memory Offset Phase 3CF X4D R/W
Extended Steeling Cycle A 3CF X4E R/W
Extended Steeling Cycle B 3CF X4F R/W
Extended Steeling Cycle C 3CF Y40 R/W
Extended Double Buffer Starting Address A Low 3CF Y41 R/W
Extended Double Buffer Starting Address A Mid 3CF Y42 R/W
Extended V2 Video Horizontal DDA Increment Value Low 3CF Y43 R/W
Extended V2 Video Horizontal DDA Increment Value High 3CF Y44 R/W
Extended Double Buffer Starting Address B Low 3CF Y45 R/W
Extended Double Buffer Starting Address B Mid 3CF Y46 R/W
Extended V2 Video Vertical DDA Increment Value Low 3CF Y47 R/W
Extended V2 Video Vertical DDA Increment Value High 3CF Y48 R/W
Extended V2 Video FIFO Low Control 3CF Y49 R/W
Extended V2 Video FIFO High Control 3CF Y4A R/W
Extended V2 Video Format Control 3CF Y4B R/W
Extended V2 Video Display Control I 3CF Y4C R/W
Extended V2 Video FIFO Control I 3CF Y4D R/W
Extended V2 Video Miscellaneous Control I 3CF Y4E R/W
Extended Steeling Cycle D 3CF Y4F R/W
Extended X2 Video Memory Starting Address Low 3CF J40 R/W
Extended X2 Video Memory Starting Address Mid 3CF J41 R/W
Extended X2 Video Memory Starting Address High 3CF J42 R/W
Extended X2 Video Source Map Width 3CF J43 R/W
Extended X2 Video Memory Source Map and Source Win. Width High 3CF J44 R/W
Extended X2 Video Display Horiz. Pipe Starting Pixel Low 3CF J45 R/W
Extended X2 Video Display Horiz. Pipe Starting Pixel High 3CF J46 R/W
Extended X2 Video Display Horizontal Starting Pixel Low 3CF J47 R/W
Extended X2 Video Display Horizontal Starting Pixel High 3CF J48 R/W
Extended X2 Video Display Horizontal Ending Pixel Low 3CF J49 R/W
Extended X2 Video Display Horizontal Ending Pixel High 3CF J4A R/W
Extended X2 Video Display Vertical Starting Line Low 3CF J4B R/W
Extended X2 Video Display Vertical Starting Line High 3CF J4C R/W
Extended X2 Video Display Vertical Ending Line Low 3CF J4D R/W
Extended X2 Video Display Vertical Ending Line High 3CF J4E R/W
Extended X2 Video Source Window Width 3CF J4F R/W
Extended X2 Video Horizontal DDA Initial Value Low 3CF K40 R/W
Extended X2 Video Horizontal DDA Initial Value High 3CF K41 R/W
Extended X2 Video Horizontal DDA Increment Value Low 3CF K42 R/W
Extended X2 Video Horizontal DDA Increment Value High 3CF K43 R/W
Extended X2 Video Vertical DDA Initial Value Low 3CF K44 R/W
Extended X2 Video Vertical DDA Initial Value High 3CF K45 R/W
Extended X2 Video Vertical DDA Increment Value Low 3CF K46 R/W
Extended X2 Video Vertical DDA Increment Value High 3CF K47 R/W
Extended X2 Video Format Control 3CF K48 R/W
Extended X2 Video display Control I 3CF K49 R/W
Extended X2 window Double Buffer Address Low 3CF K4A R/W
Extended X2 window Double Buffer Address Mid. 3CF K4B R/W
Extended X2 window Double Buffer Address High 3CF K4C R/W
Extended X2 window Control I 3CF K4D R/W
SPRITE HORIZONTAL START LO 3CF 50 R/W NO ;ac
SPRITE HORIZONTAL START HI 3CF 51 R/W NO ;ac
SPRITE HORIZONTAL PRESET 3CF 52 R/W NO ;ac
SPRITE VERTICAL START LO 3CF 53 R/W NO ;ac
SPRITE VERTICAL START HI 3CF 54 R/W NO ;ac
SPRITE VERTICAL PRESET 3CF 55 R/W NO ;ac
SPRITE CONTROL 3CF 56 R/W YES ;ac
Extended Attribute Control 3CF 57 R/W Yes ;ac
Extended Overscan Red 3CF 58 R/W Yes ;ac
Extended Overscan Green 3CF 59 R/W Yes ;ac
Extended Overscan Blue 3CF 5A R/W Yes ;ac
Extended COP Back Door 3CF 5B RO ;cop
Extended RAMDAC 3CF 5C R/W Yes ;DAC Genesis
Extended RAMDAC Clock Control 3CF 5D R/W Yes ;ac
Extended Capture Horizontal Starting Low 3CF 60 R/W
Extended Capture Horizontal Starting High 3CF 61 R/W
Extended Capture Horizontal Ending Low 3CF 62 R/W
Extended Capture Horizontal Ending High 3CF 63 R/W
Extended Capture Vertical Starting Low 3CF 64 R/W
Extended Capture Vertical Starting High 3CF 65 R/W
Extended Capture Vertical Ending Low 3CF 66 R/W
Extended Capture Vertical Ending High 3CF 67 R/W
Extended Capture Horizontal DDA Initial Value Low 3CF 68 R/W
Extended Capture Horizontal DDA Initial Value High 3CF 69 R/W
Extended Capture Horizontal DDA Increment Value Low 3CF 6A R/W
Extended Capture Horizontal DDA Increment Value High 3CF 6B R/W
Extended Capture Vertical DDA Initial Value Low 3CF 6C R/W
Extended Capture Vertical DDA Initial Value High 3CF 6D R/W
Extended Capture Vertical DDA Increment Value Low 3CF 6E R/W
Extended Capture Vertical DDA Increment Value High 3CF 6F R/W
Extended Memory Controller 0 3CF 70 R/W Yes ;seq 
1=7 clocks per mem cycle, 0=6 clocks 
2=extend RAS precharge by 1 
4=RAS to CAS insert 1 
8=multiple CAS mode, 0=multiple WE mode 
0x10=CAS without RAS enabled 
0x40=FIFO clear 
0x80=reset memory sequencer
Extended Memory Controller 1 3CF 71 R/W Yes ;seq 
4=use SDRAM chips 
8=use VRAM chips 
0x10=4k refresh, 0=2k refresh 
Extended Memory Controller 2 3CF 72 R/W Yes ;seq 
1=2Megs of ram 
4=64 bit wide ram 
refresh rate & interleave control
Extended Hidden Control 1 3CF 73 R/W Yes ;seq 
4=EDO enable
Extended FIFO Control 0 3CF 74 R/W Yes ;seq
Extended FIFO Control 1 3CF 75 R/W Yes ;seq
Extended SEQ Programmable 3CF 76 R/W Yes ;seq
Extended SEQ Miscellaneous 3CF 77 R/W Yes ;seq
Extended Hidden Control 2 3CF 78 R/W Yes ;seq
Extended Hidden Control 3 3CF 79 R/W Yes ;seq
Extended Hidden Control 4 3CF 7A R/W Yes ;seq
Extended Scratch Control 3CF 7B R/W Yes ;seq
Sprite Data Location Low 3CF 7E R/W Yes ;seq
Sprite Data Location High 3CF 7F R/W Yes ;seq
Extended Capture Pip Horizontal Starting Low 3CF 80 R/W
Extended Capture Pip Horizontal Starting High 3CF 81 R/W
Extended Capture Pip Horizontal Ending Low 3CF 82 R/W
Extended Capture Pip Horizontal Ending High 3CF 83 R/W
Extended Capture Pip Vertical Starting Low 3CF 84 R/W
Extended Capture Pip Vertical Starting High 3CF 85 R/W
Extended Capture Pip Vertical Ending Low 3CF 86 R/W
Extended Capture Pip Vertical Ending High 3CF 87 R/W
Extended Capture New Control I 3CF 88 R/W
Extended Capture New Control II 3CF 89 R/W
Extended Video Chroma Compare Red High 3CF 8A R/W
Extended Video Chroma Compare Red Low 3CF 8B R/W
Extended Video Chroma Compare Green High 3CF 8C R/W
Extended Video Chroma Compare Green Low 3CF 8D R/W
Extended Video Chroma Compare Blue High 3CF 8E R/W
Extended Video Chroma Compare Blue Low 3CF 8F R/W
Extended Graphics Control 3CF 90 R/W Yes ;gc
Extended Chip ID 0 (Data=A1) 3CF 91 RO No ;gc (new ID)
Extended Chip ID 1 (Data=03) 3CF 92 RO No ;gc
Extended Chip ID 2 (Data=00) 3CF 93 RO No ;gc
Extended Scratch 0 3CF 94 R/W Yes ;gc
Extended Scratch 1 3CF 95 R/W Yes ;gc
Extended Scratch 2 3CF 96 R/W Yes ;gc
Extended Scratch 3 3CF 97 R/W Yes ;gc
Bus Master Video Low Address 3CF 98 R/W Yes ;gc cancelled
Bus Master 3D Write Low Address 3CF 99 R/W Yes ;gc cancelled
Bus Master 3D Read Low Addrerss 3CF 9A R/W Yes ;gc
Bus Master High Address 3CF 9B R/W Yes ;gc
Bus Master Control 0 3CF 9C R/W Yes ;gc
Bus Master Control 1 3CF 9D R/W Yes ;gc
Extended Write FIFO MISC 3CF 9E R/W Yes ;gc
Extended Horizontal Video Scramble Seed Number Low 3CF A0 R/W
Extended Vertical Video Scramble Seed Number Low 3CF A1 R/W
Extended Horizontal/Vertical Video Scramble Seed Number High 3CF A2 R/W
Extended Enhence Control I 3CF A3 R/W
Extended CCIR656 Capture Mode I 3CF A4 R/W 3=enable 8 bit capture mode 
4=ignore VGT 
0x10=use alternate FIFO for capture 
0x20=swap U & V bytes 
0x40=mirror vertical 
0x80=mirror horiz
Extended CCIR656 Capture Mode II 3CF A5 R/W
Extended Video Bus Master I 3CF A6 R/W
Extended Video Bus Master Address Low 3CF A7 R/W
Extended Video Bus Master Address Mid 3CF A8 R/W
Extended Video Bus Master Address High 3CF A9 R/W
Extended Video Bus Master Address Offset Low 3CF AA R/W
Extended Display ZRGB Control I 3CF AB R/W
Extended Double Buffer Control I 3CF AC R/W
Extended Double Buffer Starting Address AB High 3CF YAD R/W
Extended TV Control 3CF YAE R/W
Extended Test Control 3CF YAF R/W
Extended VCLK Parameter 0 3CF B0 R/W default  ;vcg
Extended VCLK Parameter 1 3CF B1 R/W default  ;vcg
Extended MCLK Numerator 0 3CF B2 R/W default  ;vcg
Extended MCLK Numerator 1 3CF B3 R/W default  ;vcg
Extended Jumper Latch 0 3CF B4 R/W latch  ;vcg
Extended Jumper Latch 1 3CF B5 R/W latch  ;vcg
Extended Jumper Latch 2 3CF B6 R/W latch  ;vcg
Extended Feature Connector 3CF B7 R/W default  ;vcg
Extended Jumper Latch 3 3CF B8 R/W latch  ;vcg
Extended MISC CLK 3CF B9 R/W latch  ;vcg
Extended VCLK Test 0 3CF BA R/W
Extended VCLK Test 1 3CF BB R/W
Extended MCLK Test 0 3CF BC R/W
Extended MCLK Test 1 3CF BD R/W
Extended XT Control 3CF BE R/W
Extended XB Control 3CF BF R/W
Extended Programmable Bit 0 3CF XB0 R/W
Extended Programmable Bit 1 3CF XB1 R/W
Extended Programmable Bit 2 3CF XB2 R/W
Extended Video Memory Starting Address Low 3CF C0 R/W
Extended Video Memory Starting Address Mid 3CF C1 R/W
Extended Video Memory Starting Address High 3CF C2 R/W
Extended Video Memory Fetch Pitch Low 3CF C3 R/W
Extended Video Memory Fetch Pitch High 3CF C4 R/W ;64 bits
Extended Video Display Horizontal Starting Pixel Low 3CF C5 R/W
Extended Video Display Horizontal Starting Pixel High 3CF C6 R/W
Extended Video Display Horizontal Ending Pixel Low 3CF C7 R/W
Extended Video Display Horizontal Ending Pixel High 3CF C8 R/W
Extended Video Display Vertical Starting Line Low 3CF C9 R/W
Extended Video Display Vertical Starting Line High 3CF CA R/W
Extended Video Display Vertical Ending Line Low 3CF CB R/W
Extended Video Display Vertical Ending Line High 3CF CC R/W
Extended Video Display Memory Offset Phase 3CF CD R/W
Extended Video Color Compare Red  3CF CE R/W
Extended Video Color Compare Green 3CF CF R/W
Extended Video Color Compare Blue 3CF D0 R/W
Extended Video Horizontal DDA Initial Value Low 3CF D1 R/W
Extended Video Horizontal DDA Initial Value High 3CF D2 R/W
Extended Video Horizontal DDA Increment Value Low 3CF D3 R/W
Extended Video Horizontal DDA Increment Value High 3CF D4 R/W
Extended Video Vertical DDA Initial Value Low 3CF D5 R/W
Extended Video Vertical DDA Initial Value High 3CF D6 R/W
Extended Video Vertical DDA Increment Value Low 3CF D7 R/W
Extended Video Vertical DDA Increment Value High 3CF D8 R/W
Extended Video FIFO Low Control 3CF D9 R/W
Extended Video FIFO High Control 3CF DA R/W
Extended Video Format Control 3CF DB R/W
Extended Video Display Control I 3CF DC R/W
Extended Video FIFO Control I 3CF DD R/W
Extended Video Miscellaneous Control I 3CF DE R/W
Extended Video ROM Test Address 3CF DF R/W
Extended Video ROM VCR4R Low 3CF E0 R
Extended Video ROM VCR4R High 3CF E1 R
Extended Video ROM VCR4G Low 3CF E2 R
Extended Video ROM VCR4G High 3CF E3 R
Extended Video ROM UCR4R Low 3CF E4 R
Extended Video ROM UCR4R High 3CF E5 R
Extended Video ROM UCR4G Low 3CF E6 R
Extended Video ROM UCR4G High 3CF E7 R
Extended Video VFAC Control and Capture Mode I 3CF E8 R/W
Extended Video VFAC Control and Capture Mode II 3CF E9 R/W
Extended Video VFAC Control and Capture Mode III 3CF EA R/W
Extended Capture Memory Starting Address Low 3CF EB R/W
Extended Capture Memory Starting Address Mid 3CF EC R/W
Extended Capture Memory Starting Address High 3CF ED R/W
Extended Capture Memory Fetch Pitch Low 3CF EE R/W
Extended Capture Control Miscellaneous 3CF EF R/W
Extended MISC0 3CF F0 R
Extended MISC1 3CF F1 R
Extended MISC2 3CF F2 R
Extended MISC3 3CF F3 R
Extended MISC4 3CF F4 R
Extended VUMA Configuration 3CF F5 R
Extended VUMA Extended Address) 3CF F6 R
Extended VUMA Arbitration Value 3CF F7 R
Extended EDO Memory 3CF F8 R/W
Extended Video Plannar Mode 3CF F9 R/W
Extended Indirect Index For 4X 3CF FA R/W
Extended Not Used 3CF FB R/W
Extended YUV Value Offset Low 3CF FC R/W
Extended YUV Value Offset High 3CF FD R/W
 
NAME PORT INDEX VGA RESET ;Remarks
CRTC Index register 3C4 R/W 0 set this register to set the index for 3C5 access
Extended Video Index register  3CE R/W 0 set this register to set theindex for 3CF access
 
next: PCI I/O (cont'd)
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