
6.4.2
Cursor control ................................................................................................................. 62
6.5
DISPLAY SCAN CONTROL ....................................................................................................... 63
6.5.1
Applicable display .......................................................................................................... 63
6.5.2
Interlace display ............................................................................................................. 64
6.6
THE EXTERNAL SYNCHRONOUS SIGNAL ................................................................................... 65
6.7
VIDEO INTERFACE, NTSC/PAL OUTPUT ................................................................................. 68
7
VIDEO CAPTURE.......................................................................................................................... 69
7.1
FORMAT ................................................................................................................................ 69
7.1.1
Input Data Format ......................................................................................................... 69
7.1.2
Video Signal Capture ..................................................................................................... 69
7.1.3
Non-interlace Transformation ....................................................................................... 69
7.2
VIDEO BUFFER ...................................................................................................................... 70
7.2.1
Data Format ................................................................................................................... 70
7.2.2
Synchronous Control...................................................................................................... 70
7.2.3
Area Allocation ............................................................................................................... 70
7.2.4
Window Display.............................................................................................................. 71
7.2.5
Interlace Display ............................................................................................................ 71
7.3
SCALING ............................................................................................................................... 72
7.3.1
Video Reduction Function.............................................................................................. 72
7.3.2
Vertical Interpolation ..................................................................................................... 72
7.4
ERROR HANDLING ................................................................................................................. 72
7.4.1
Error Detection Function............................................................................................... 72
8
DRAWING PROCESSING ............................................................................................................. 74
8.1
COORDINATE SYSTEM............................................................................................................ 74
8.1.1
Drawing coordinates ...................................................................................................... 74
8.1.2
Texture coordinates ........................................................................................................ 75
8.1.3
Frame buffer ................................................................................................................... 75
8.2
FIGURE DRAWING .................................................................................................................. 76
8.2.1
Drawing primitives ........................................................................................................ 76
8.2.2
Polygon drawing function .............................................................................................. 76
8.2.3
Drawing parameters ...................................................................................................... 77
8.2.4
Anti-aliasing function .................................................................................................... 78
8.3
BIT MAP PROCESSING ........................................................................................................... 79
8.3.1
BLT.................................................................................................................................. 79
8.3.2
Pattern data format ....................................................................................................... 79
8.4
TEXTURE MAPPING ................................................................................................................ 80
8.4.1
Texture size..................................................................................................................... 80
8.4.2
Texture color ................................................................................................................... 80
8.4.3
Texture Wrapping........................................................................................................... 80