On Mon, 24 Nov 2003, Ronald Bultje wrote: > Hi Steve, > > On Fri, 2003-11-21 at 22:11, Steve Tell wrote: > > Does "couldn't handle the throughput" relate mainly to overrunning the > > pci-bus DMA bandwidth to memory that the card can get in a particular > > system, Or does the zoran's jpeg encoder hardware itself get confused when > > a picture is too complex? > > DMA. There's apparently some settings on the card that influence this. > I've seen some "private" PCI settings on the Iomega Buz (thanks to the Thanks for that hint. I'll continue fiddling with my system's settings to see if anything helps. > Iomega engineers for giving me this data ;) ) that affect throughput. > Something tells me that the DC10+ also has these settings. The win32 > driver definately has better throughput than ours (this is noticeable in > full-screen overlay). However, without proper datasheets, this is hard > to find out myself. Then again, our driver is much more stable and gives > better quality capture compared to the win32 driver, so I don't really > see much of an issue here (yet). ;). I have the zoran chips' datasheets, and the reference-board tech manual including schematics, all downloaded from Linux Media Labs' web site some time ago. I assume you have all of these: ZR36067 "AV PCI Controller", March 1998, 48 pages ZR36060 "Integrated JPEG Codec" January 1998, 44 pages ZR736342 "ZR36060 Reference Design Board technical reference manual," July 17, 1997, 30 pages. Steve
