WD90C00 PDF даташит
Спецификация WD90C00 изготовлена «Western Digital» и имеет функцию, называемую «VGA Controller». |
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Детали детали
Номер произв | WD90C00 |
Описание | VGA Controller |
Производители | Western Digital |
логотип |
30 Pages
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WD90COO
Section Title
TABLE OF CONTENTS
Page
1.0 Introduction ........................................................... 12-1
1.1 Features ........................................................ 12-1
1.2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12-2
2.0 Architecture ........................................................... 12-4
3.0 WD90COO Interfaces .................................................... 12-6
3.1 CPU and BIOS ROM Interface ....................................... 12-6
3.2 DRAM Display Buffer Interface ....................................... 12-6
3.3 Video and RAMDAC Interface ........................................ 12-7
3.4 Clocklnterface .................................................... 12-7
3.5 WD90COO Power-Up Configuration ................................... 12-7
4.0 Pin Description ......................................................... 12-8
5.0 Absolute Maximum Ratings .............................................. 12-16
6.0 Standard Test Conditions ............................................... 12-17
7.0 DC Characteristics ..................................................... 12-18
8.0 AC Timing Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-19
9.0 WD90COO Registers ................................................... 12-31
9.1 VGA Registers Summary .......................................... 12-31
9.2 PR Registers Summary ............................................ 12-32
9.3 Compatibility Registers Summary .................................... 12-32
9.4 VGA Registers ................................................... 12-33
9.5 General Registers ................................................ 12-33
9.6 Sequencer Registers .............................................. 12-35
9.7 CRT Controller Registers .......................................... 12-39
9.8 Graphics Controller Registers ....................................... 12-49
9.9 Attribute Controller Registers ....................................... 12-55
9.10 Compatibility Registers ............................................ 12-59
9.11 WD90COO PR Registers ........................................... 12-64
9.12 Internal 110 Ports ................. '" " .... , ...................... 12-79
9.13 Video RAMDAC Ports ............................................. 12-81 . .
9.14 External I/O Port Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-83
Section Title
APPENDICES
Page
A.1 EGA Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12-84
A.2 General Registers ..................................................... 12-86
A.3 Sequencer Registers ................................................... 12-87
A.4 CRT Controller Registers ................................................ 12-88
A.5 Graphics Controller Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-90
A.6 Attribute Controller Registers ............................................ 12-90
A.7 Applications .......................................................... 12-92
10-25-90
12-i
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Номер в каталоге | Описание | Производители |
WD90C00 | VGA Controller | Western Digital |
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