On Fri, 13 Jan 2006 02:02, Timothy Miller wrote: > On 1/11/06, Richard Smith <[EMAIL PROTECTED]> wrote: > > If someone would write some good software that would generate lots of > > different test patterns and modes I bet you could sell quite a few as > > test pattern generators. Especially with open source code that an OEM > > could customize into their test setup. > > Mind if I steal your idea? :)
Actually, what you could do is take some good fractals program with source - fractint comes to mind - and use that. Zooms, interrupted fills followed by switching to a completely different fractal, etc. It should give the hardware a good hard solid workout. Wesley Parish > > > I know Bitworks could use at least one for generating various HD modes > > or modes to fit some of the widescreen LCD panels. > > > > What will be the minimum dot clock you can generate? > > Actually, I don't know. PLLs usually have a limited range. For > instance, one we used on a Tech Source card couldn't go below 33MHz. > Since we needed a lower rate for one particular mode, we added logic > to divide it down further. We always use Xilinx DCM's to deal with > clock phasing, so we can just add logic to allow various > multiplier/divisor ratios for the in-coming clock beyond the control > we have over the external PLL. > > There's one thing that we needed done that never happened. We're > using the Lattice XP10 for the host interface on OGD (because it's > flash programmable). It has PLLs in it, but we don't know how good > they are (statistically, any given PLL is probably going to suck). We > haven't been able to test it ourselves, and no one in the community > has volunteered to do it for us. I think Howard's just opted to use > an external PLL that we know is good. It's one we've used for ATC > systems, so the jitter is very low. > _______________________________________________ > Open-graphics mailing list > [email protected] > http://lists.duskglow.com/mailman/listinfo/open-graphics > List service provided by Duskglow Consulting, LLC (www.duskglow.com) -- Clinersterton beademung, with all of love - RIP James Blish ----- Mau e ki, he aha te mea nui? You ask, what is the most important thing? Maku e ki, he tangata, he tangata, he tangata. I reply, it is people, it is people, it is people. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
