This support can be used to give a single display image on two screen with different refresh rates, or entirely different images on the two displays. It is possible to turn the linear addressing off with this option. In this way the expensive operation of reading back to contents of the screen is never performed and the performance is improved. For the chips either using the WinGine or basic architectures, the chips generates a number of fixed clocks internally. Download free driver for Chips and Tech. Silent, Gaming and OC. Alternatively the user can use the ” TextClockFreq ” option described above to select a different clock for the text console.
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For other depths this option has no effect.
When constructing a modeline for use chjps the Chips and Technologies driver you’ll needed to considered several points. Because the rendering is all done into a virtual framebuffer acceleration can cips be used. Unknown manufacturer Unknown platform. The ct chipset introduced a rech dual channel architecture. This reduces anx amount of video ram available to the modes.
Chips and Technologies specify that the memory clock used with the multimedia engine running should be lower than that used without. This option sets the centering and stretching to the BIOS default values. The effect of this is that the maximum dot clock visible to the user is a half or a third of the value at 8bpp.
This is the first chip of the ctxx series to support fully programmable clocks. There is the limit of the maximum dotclock the video processor can handle, and there is another limitation of the available memory bandwidth. However there is no reliable way of probing the memory clock used in these chipsets, and so a conservative limit must be taken for the dotclock limit.
You are using a mode that your screen cannot handle.
This is a small and long-standing bug in the current server. In this case the driver divides the video processors dotclock limitation by the number of bytes per pixel, so that the limitations for the various colour depths are. Possibly useful if you wish to use an old workstation monitor.
But all in good time. The Xserver assumes that the framebuffer, if used, will be at the top of video ram. This problem has been reported under UnixWare 1. Hence the server assumes a The clocks in the x series of chips are internally divided by 2 for 16bpp and 3 for 24bpp, allowing one modeline to be used at tedh depths.
Chips And Technologies, Inc. Some users prefer to use clocks that are defined by their BIOS. By default the two display share equally the available memory. Note that this trch using the multimedia engine to its limit, and some manufacturers have set a default memory clock that will cause pixel errors with this option.
The programmable clock makes this option obsolete and so it’s use isn’t recommended. 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. So using this option on a xx chipset forces them to use MMIO for all communications. The authors of this software wish to acknowledge the support supplied by Chips and Technologies during the development of this software.
Chups to use the dual-head support is slightly more complex. By default it is assumed that there are 6 significant bits in the RGB representation of the colours in 4bpp and above.
It doesn’t occur under UnixWare 2. The amount of ram required for the framebuffer will vary depending on the size of the screen, and will reduce the amount of video ram available to the modes.
It might affect some other SVR4 operating systems as well. A ” letterbox ” effect with no stretching can be achieved using this option. This option forces the server to assume that there are 8 significant bits.