MB86296 Datasheet, PDF (75/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
7.2.4 Display position control
The graphic image data to be displayed is located in the logical 2D coordinates space (logical graphics
space) in the Graphics Memory. There are six logical graphics spaces as follows:
• L0 layer
• L1 layer
• L2 layer
• L3 layer
• L4 layer
• L5 layer
The relation between the logical graphics space and display position is defined as follows:
Origin Address (OA)
Stride (W)
Display Address (DA)
Display Position X,Y (DX,DY)
Logical Frame
Display Frame
VDP
HDP
Fig. 5.2 Display Position Parameters
OA Origin Address Origin address of logical graphics space. Memory address of top left
edge pixel in logical frame origin
W
Stride
Width of logical graphics space. Defined in 64-byte unit
H
Height
Height of logical graphics space. Total raster (pixel) count of field
DA Display Address Display origin address. Top left position address of display frame
origin
DX Display Position Display origin coordinates.
DY
Coordinates in logical framespace of display frame origin
MB86296S <Coral-PA>
65
Specification Manual Rev0.1