MB86296 Datasheet, PDF (65/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
6. Graphics Memory
6.1. Configuration
The Coral uses local external memory (Graphics memory) for drawing and display
management. The configuration of this Graphics memory is described as follows:
6.1.1. 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
Polygon drawing flag area
=> (Y resolution + 2) * X resolution
By XRES size
Frame buffer, Z buffer,
Displaylist and etc
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.
MB86296S <Coral-PA>
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Specification Manual Rev0.1