VT8601 Via, VT8601 Datasheet - Page 37

• Manufacturer Part Number: VT8601
• Description: Slot-1 / Socket-370 PCI North Bridge
• Manufacturer: Via

Extended Registers – VGA CRT Controller Indexed
Revision 1.3 September 8, 1999
Port
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
7HFKQRORJLHV ,QF
1D-1E -reserved-
3D-3F -reserved-
58-5D -reserved-
Index Extended CRTC Registers
30-33 -reserved-
35-34 GE IO Linear Address Base
40-50 Hardware Cursor Registers
43-40 HW Cursor Position
45-44 HW Cursor Pattern Location
47-46 HW Cursor Offset
4F-48 HW Cursor Color
53-54 -reserved-
60-61 -reserved-
65-7F -reserved-
:H &
:H &R R QQHFW
1A
1B
1C
2A
2B
2C
2D
3A
3B
3C
0E
1F
2E
2F
5E
5F
19
20
21
22
23
24
25
26
27
28
29
36
37
38
39
50
51
52
55
56
57
62
63
64
QQHFW
DPA Extra
CRT Module Test
CRT Interlace Control
Arbitration Control 1
Arbitration Control 2
Arbitration Control 3
Software Programming
Command FIFO
Linear Addressing
CPU Latch Readback
-reserved-
VGA Attribute State
RAMDAC RW Timing
-reserved-
CRT High Order Start
-reserved-
RAMDAC Mode
In terface Select
Horiz. Parameter Overflow
-reserved-
GE Timing Control
-reserved-
Performance Tuning
Graphics / Video Engine Ctrl
I
Pixel Bus Mode
PCI Interface Control
Physical Address Control
Clock and Tuning
Misc Control
HW Cursor Control
Bus Grant Termination Ctrl
Shared Frame Buffer Ctrl
PCI Retry Control
Display Pre-end Control
Display Pre-end Fetch Param.
Capture / ZV Port Control
Test Control
Enhancement 0
Enhancement 1
2
C Control
0000000nb RW
0n000001b RW
000x0010b RW
x0000000b RW
Default Acc
0000
0F
0F
00
—
00
00
00
—
—
00
00
—
—
—
—
00
—
00
10
00
—
00
—
03
—
00
82
00
00
00
—
—
—
—
—
—
—
—
00
—
—
00
—
04
00
—
—
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
—
—
—
—
—
—
—
—
—
—
—
—
-31-
Extended Registers – CRTC Shadow
Port
Port
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
3x5
D3-D0 VGA / Digital TV Sync Ctrl 1
8D-8A Video Window End
A1-A0 Capture Vertical Total
A3-A2 Capture Horizontal Total
A5-A4 Capture Vertical Start
A7-A6 Capture Vertical End
A9-A8 Capture Horizontal Start
B1-B0 Capture Horiz Minify Factor
B3-B2 Capture Vert Minify Factor
B5-B4 DST Pixel Width Count
B7-B6 DST Pixel Height Count
C0-CF -reserved-
D4-FF -reserved-
80-BF Video / Capture Engine
9A-98 Capture Video Start Address
Index Extended CRTC Registers
8F-8E Video Display Engine Flag
Index CRTC Shadow Registers
81-80 Horiz Scaling Factor (W1)
83-82 Vert Scaling Factor (W1)
85-84 -reserved-
89-86 Video Window Start (W1)
91-90 Row Byte Offset (W1, W1-Y)
94-92 Vid Start Addr (W1-Y or W1)
BD- Chromakey Comp Data 0 Hi
AB- Capture Horizontal End
BB- Chromakey Comp Data 0 Lo
AD Capture Horiz Sync Pulse
AC Capture Vert Sync Pulse
AE Capture CRTC Control
AF
BE
9B
9C
9D
B8
B9
BF
9E
9F
95
96
97
00
03
04
05
06
07
10
11
16
Vid Win Line Buffer Thresh
Video Display Engine Flag
Video Display Status
Capture Control 1
Capture Control 2
Capture Control 3
Capture Control 4
Horizontal Retrace End
Vertical Total
Overflow
Vertical Retrace Start
Vertical Retrace End
Vertical Blanking End
Line Buf Lev Ctl (W1-Y, W1)
Capture CRTC Control
Capture FIFO Control 1
Capture FIFO Control 2
Capture Control
Display Engine Flag 4
Horizontal Total
Horizontal Blanking End
Hoprizontal Retrace Start
VT8601 Apollo ProMedia
Register Summary Tables
Default Acc
Default Acc
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
—
—
—