Western Digital 16 WD90C26 free download

File name 16_WD90C26.pdf

WD90C26 TABLE OF CONTENTS Section Title Page 1.0 INTRODUCTION 16-1 1.1 Scope 16-1 1.2 Features 16-1 1.3 General Description 16-1 2.0 ARCHITECTURE 16-3 2.1 System Interface Logic 16-3 2.2 CRT Controller 16-3 2.3 Video Sequencer 16-3 2.4 Video Graphics Controller 16-3 2.5 Video Attribute Controller 16-3 2.6 RAMDAC 16-4 2.7 FLAT-PANEL ADAPTER 16-4 2.7.1 Color to Gray Scale Conversion 16-4 2.7.2 Gray Scale Mapping 16-4 2.7.3 Gray Shade Dithering 16-4 2.7.4 Color STN Dithering 16-4 2.7.5 Color TFT Panel Dithering Circuitry 16-4 2.7.6 Direct 12-Bit TFT Panel Support 16-4 2.7.7 Row Buffering 16-4 2.7.8 Frame Buffering 16-4 2.7.9 Panel Format Conversion 16-5 2.8 Display Memory Interface 16-5 2.9 Power-down Control 16-5 3.0 INTERFACES 16-7 3.1 Introduction 16-7 3.2 System Interface 16-7 3.2.1 ISA Bus Interface 16-7 3.3 Micro Channel Interface 16-9 3.4 BIOS Support Interface 16-9 3.5 Video Memory Interface 16-9 3.5.1 2 DRAM Implementation