The chipset has independent display channels, that can be configured to support independent refresh rates on the flat panel and on the CRT. As mentioned before, try disabling this option. The current programmable clock will be given as the last clock in the list. It might affect some other SVR4 operating systems as well. If you see such display corruption, and you have this warning, your choices are to reduce the refresh rate, colour depth or resolution, or increase the speed of the memory clock with the the ” SetMClk ” option described above.

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Using this option, when the virtual desktop is scrolled away from the zero position, the pixmap cache becomes visible.

This chip is basically identical to the Note that for the this is required as the base address can’t be correctly probed. Note that this option only has an effect on TFT screens. In technoologies the timing for the flat panel are dependent on the specification of the panel itself and are independent of the particular mode chosen. If you exceed the maximum set by the memory clock, you’ll get corruption on the screen during graphics operations, as you will be starving the HW BitBlt engine of clock cycles.

However some video ram, particularly EDO, might not be fast enough to handle this, resulting in drawing errors on the screen.

Chips and Technologies 65550 Free Driver Download

The four options are for 8bpp or chipa, 16, 24 or 32bpp LCD panel clocks, where the options above set the clocks to 65MHz. The problem here is that the flat panel needs timings that are related to the panel size, and not the mode size.


This option forces the two display channels to be used, giving independent refresh rates. The correct options to start the server with these modes are. Horizontal waving or jittering of the whole screen, continuously independent from drawing operations.

Information for Chips and Technologies Users

Use caution with this option, as driving the video processor beyond its specifications might cause damage. If this option is removed form xorg. If the user has used the ” UseModeline ” or ” FixPanelSize ” options the panel timings are derived from the mode, which can be different than the panel size. The ct chipset introduced a new dual channel architecture. But assuming your memory clock is programmed to these maximum values the various maximum dot clocks for the chips are.

In general the LCD panel clock should be set independently of the modelines supplied.

Chips and Technologies drivers – Chips and Technologies Video Drivers

In this way PseudoColor and TrueColor visuals can be used on the same screen. Please read the section below about dual-head display. If you see such display corruption, and you have this warning, your choices are to reduce the refresh rate, colour depth or resolution, or increase the speed of the memory clock with the the pfi SetMClk ” option described above.


Note that this option using the multimedia engine to its limit, and some manufacturers have set a default memory clock that will cause pixel errors with this option. Additionally, the ” Screen ” option must appear in the device section. Also for non PCI machines specifying this force tfchnologies linear base address chlps be this value, reprogramming the video processor to suit.

Dual refresh rate display can be selected with the ” DualRefresh ” option described above. Otherwise it has the the same properties as the Alternatively the user can use the ” TextClockFreq ” option described above to select a different clock for the text console. This problem has been reported under UnixWare 1. This is useful to see chipe pixmaps, tiles, etc have been properly cached.

This is useful for the chipset where the base address of the linear framebuffer must be supplied by the user, or at depths 1 and 4bpp. Hi-Color and True-Color modes are implemented in the server.

This will prevent the use of a mode that is a different size than the panel. Therefore technllogies server uses a default value chis Note that many chips are capable of higher memory clocks than actually set by BIOS.

It has the same ID and is identified as a when probed.