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60 Chapter 5: Matrox 4Sight-M hardware reference
Encoder
Matrox 4Sight-M provides an integrated Chrontel 7009 video encoder, driven by
the second CRT controller of the 855GME GMCH.
The video encoder can be programmed to output composite (CVBS) and
component (Y/C) video in NTSC/PAL formats. It can also output component
RGB video with the same resolution and refresh rate as video in NTSC/PAL
formats.
To output to a display device using the encoder, you must insert the appropriate
MIL/MIL-Lite coding into your application.
By default, the encoder operates in underscan mode, providing a visible area
outside of the specified resolution. It is also possible to specify an overscan encoder
display, whereby the visible display area is exactly the size of the specified
resolution.
TMDS transmitter
To output data to a digital display, the 855GME graphics controller with the
Chrontel 7009 video encoder uses transition minimized differential signaling
(TMDS) through the digital visual interface (DVI).
Mass storage
To store data, the Matrox 4Sight-M integrated unit features a 30 Gbyte, 2.5 inch
hard disk drive. It has a 44-pin connector that connects to the ATA 44-pin
connector on the motherboard, via a flat-ribbon cable. The hard disk,
manufactured by Fujitsu Limited, supports the ATA/ATAPI-4 device
specification, whose features include the following:
• Support for two hard disks on a single channel. Support for programmed I/O
(PIO) modes 0, 1, 2, 3, and 4.
• Support for Direct Memory Access (DMA) modes 0,1, and 2.
• Support for Ultra DMA modes 0, 1, and 2.
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