MB86294 Datasheet, PDF (50/305 Pages) Fujitsu Component Limited. – Grraphiics Controller specifications

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
5 Graphics Memory
5.1 C o n f i g u r a t i o n
The Coral uses local external memory (Graphics memory) for drawing and display management.
The configuration of this Graphics memory is described as follows:
5.1.1 Data type
The Coral handles the following types of data. Display list can be stored in the host (main)
memory as well. Texture/tile pattern and text pattern can be defined by a display list as well.
Drawing Frame
This is a rectangular image data field for 2D/3D drawing. The Coral is able to have plural
drawing frames and display a part of these area if it is set to be bigger than display size. The
maximum size is 4096x4096 pixel in 32 pixel units. And both indirect color ( 8 bits / pixel) and
direct color ( 16 bits / pixel) mode are applicable.
Display Frame
This is a rectangle picture area for display. The Coral is able to set display layer up to 6 layers.
Z Buffer
Z buffer is required for eliminating hidden surfaces. In 16 bits modes, 2 bytes and in 8 bits
mode, 1 byte are required per 1 pixel. This area has to be cleared before drawing.
Polygon Drawing Flag Buffer
This area is used for polygon drawing. It is required 1 bit memory area per 1 pixel and 1 x-axis
line area both backward and forward of it. This area has to be cleared before drawing.
Base Address of Polygon
Drawing Buffer(PFBR)
Frame buffer, Z buffer,
Displaylist and etc
By XRES size
By drawing frame sizy
By XRES size
Frame buffer, Z buffer,
Displaylist and etc
Polygon drawing flag area
=> (Y resolution + 2) * X resolution
Displaylist Buffer
The displaylist is a list of drawing commands and parameters.
Texture Pattern
This pattern is used for texture mapping. The maximum size is up to 4096 x 4096 pixels.
Cursor Pattern
This is used for hardware cursor. The data format is indirect color ( 8 bits / pixel) mode. And
the Coral is able to display two cursor of 64 x 64 pixel size.
MB86294/294S CORAL_LB
Graphics Controller
50
Specifications Rev. 1.0