Pci Video Controller - Intel AC450NX Product Manual

PCI Video Controller

The onboard Cirrus Logic GD5446 PCI VisualMedia accelerator is a 64-bit DRAM-based SVGA
controller with hardware-accelerated BitBLT transfers of data, video playback, and video capture
to the frame buffer. The frame buffer is addressable through a 16-Mbyte window consisting of
three, 4-Mbyte byte-swapping apertures, and a special video aperture. The SVGA controller also
features a 64-bit GUI BitBLT engine with double-buffered, memory-mapped control registers.
The control registers are relocatable anywhere in the 64-Kbyte space; this allows multiple devices
in a single server.
The SVGA controller is fully compatible with these video standards: CGA, EGA, Hercules
graphics, MDA, and VGA. The server comes with 2 MB of onboard video DRAM allowing the
controller to support 132-column text modes and high resolution graphics with 1280 x 1024 x 16
colors. Depending on the environment, the controller displays up to 16.7 M colors in some video
resolutions.
The SVGA controller supports analog VGA monitors (single and multiple frequency, interlaced
and noninterlaced) with a maximum vertical retrace interlaced frequency of 87 Hz.
Video Modes
The CL-GD5446 provides all the standard IBM VGA modes. The following tables show all the
supported video modes.
Standard VGA Modes
Colors
(number/
Modes palette
in Hex size)
0, 1 16/256K
2, 3 16/256K
4, 5 4/256K
6 2/256K
7 Mono
D 16/256K
E 16/256K
F Mono
10 16/256K
11 2/256K
11* 2/256K
11* 2/256K
12 16/256K
12* 16/256K
12* 16/256K
12* 16/256K
13 256/256K
Chapter 17 PHP I/O Baseboard: Description/Setting Configuration Jumpers
Char. x Char.
Row Cell Resolution
40 x 25 9 x 16 360 X 400
80 x 25 9 x 16 720 X 400
40 x 25 8 x 8 320 X 200
80 x 25 8 x 8 640 X 200
80 x 25 9 x 16 720 X 400
40 x 25 8 x 8 320 X 200
80 x 25 8 x 14 640 X 200
80 x 25 8 x 14 640 X 350
80 x 25 8 x 14 640 X 350
80 x 30 8 x 16 640 X 480
80 x 30 8 x 16 640 X 480
80 x 30 8 x 16 640 X 480
80 x 30 8 x 16 640 X 480
80 x 30 8 x 16 640 X 480
80 x 30 8 x 16 640 X 480
80 x 30 8 x 16 640 X 480
40 x 25 8 x 8 320 X 200
Pixel Horiz.
Display Freq. Freq.
Mode (MHz) (KHz)
Text 14 31.5
Text 28 31.5
Graphics 12.5 31.5
Graphics 25 31.5
Text 28 31.5
Graphics 12.5 31.5
Graphics 25 31.5
Graphics 25 31.5
Graphics 25 31.5
Graphics 25 31.5
Graphics 31.5 37.9
Graphics 31.5 37.5
Graphics 25 31.5
Graphics 31.5 37.9
Graphics 31.5 37.5
Graphics 35.8 43.3
Graphics 12.5 31.5
Vert.
Freq.
(Hz)
70
70
70
70
70
70
70
70
70
60
72
75
60
72
75
85
70
187