| Available Documentation | 
 | ======================= | 
 |  | 
 | Apollo PLE 133 Chipset VT8601A North Bridge Datasheet, Rev. 1.82, October 22, | 
 | 2001, available from VIA: | 
 |  | 
 | 	http://www.viavpsd.com/product/6/15/DS8601A182.pdf | 
 |  | 
 | The datasheet is incomplete, some registers that need to be programmed are not | 
 | explained at all and important bits are listed as "reserved". But you really | 
 | need the datasheet to understand the code.  "p. xxx" comments refer to page | 
 | numbers of this document. | 
 |  | 
 | XFree/XOrg drivers are available and of good quality, looking at the code | 
 | there is a good idea if the datasheet does not provide enough information | 
 | or if the datasheet seems to be wrong. | 
 |  |