Using XF86_W32 on an ET6000-based board

Information for W32 and ET6000 Chipset Users : Using XF86_W32 on an ET6000-based board
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4. Using XF86_W32 on an ET6000-based board

The ET6000 driver code was developed on top of the existing ET4000/W32 code, because of the many similarities between both devices. As with the other W32 (external) clockchip/RAMDAC devices, the ET6000's built-in clockchip/RAMDAC provides a set of 8 standard clocks, which could be probed with the normal XFree clock probing procedure. In spite of that, XF86_W32 will always use the built-in programmable clockchip and RAMDAC. So there is no need for a


 ClockChip "et6000"

or a


 Ramdac "et6000"

line in the Device Section of the XF86Config file. Once it knows it's dealing with an ET6000, XF86_W32 will find its own way. At this moment, accelerated support is very sketchy, and only uses those things the ET4000/W32 code already provided, with some changes due to incompatibilities between the two devices. Major speed improvements should be possible. Tseng Labs specifies a maximum pixel clock of 135 MHz for the ET6000 chips (with higher clocks to come).

There is a known bug in this server when using it with ET6000 cards with 2.25 MB MDRAM: the server will detect 2.5 MB instead, and as a result, most accelerated operations won't work. On cards with 2.25 MB MDRAM, you must insert a


 VideoRam 2304

line in your XF86Config.