Re: gEDA-user: Fwd: [Open-graphics] How to get more eyes on OGD1 schematic?

[Xtian Xultz <xultz@xxxxxxxxxxxx>]

Thats the first time I had seen a part in a "U" shape... thats very ugly to 
me... 
And a lot of capacitors, all in paralell, the ICs withou power pins... how can 
somebody deffend that kind of design style? (I am not saying the schematic is 
bad, I just dislike a lot that style, but a lot of people thinks thats the 
best design style, which I cant understand).


Em Ter 14 Mar 2006 16:45, Peter Brett escreveu:
> Hi folks,
>
> If any of you fancy providing some help with the OpenGraphics project, this
> is your chance!
>
> The OpenGraphics project (which you may have heard of on KernelTrap [1]) is
> a project to design a fully open-specification OpenGL accelerator card that
> will Just Work with Free operating systems (Linux, *BSD, etc).
>
> The project has just released first draft schematics for a FPGA-based
> development board (OGD1) which will be used to design the RTL for the
> graphics core. The RTL will be used to design an ASIC, around which the
> final product will be built.
>
> Unfortunately, most of the people involved are software or IC engineers,
> and so help's really needed to check over the schematics for any major bugs
> before work starts on the artwork.
>
> Schematics (PDF): http://natsuki.kinali.ch/OGD1_Schematic_RevB.pdf
> BOM (text): http://natsuki.kinali.ch/OGD1_RevA_BOM.txt
> BOM (ODS):
> http://www.peter-b.co.uk/downloads/opengraphics/OGD1_RevA.2_BOM.ods
>
> N.b. BOM is for Rev.A of the schematics, so it's not up-to-date at the
> moment.
>
> Also, if anyone feels like it, help is also needed converting the
> schematics to gschem!
>
> If you're interested in helping with any of this, please join the
> OpenGraphics mailing list:
> http://lists.duskglow.com/mailman/listinfo/open-graphics ... don't send
> stuff through me, I'm going to be AFK for about the next 6 weeks. :)
>
> Peter
>
>
> [1] http://kerneltrap.org/node/6262 (there are some other relevant articles
> on KernelTrap too)
>
>
>
> ----------  Forwarded Message  ----------
>
> Subject: [Open-graphics] How to get more eyes on OGD1 schematic?
> Date: Tuesday 14 March 2006 19:13
> From: "Timothy Miller" <theosib@xxxxxxxxx>
> To: ogml <open-graphics@xxxxxxxxxxxx>
>
> There have been a number of you who have looked at the schematic,
> found some bugs, and commented on it, and we're very grateful for the
> help.
>
> Howard has quite a lot more experience with PCB design, so it's no
> surprise that he's managed to find a number of additional bugs on his
> own since the release.  What concerns me is leaving him as a
> bottleneck.  The great likelihood is that he, being one person,
> working on this in his spare time, is going to miss a LOT of bugs, and
> if we were to produce that board, it could be disasterous.
>
> Does anyone here have any ideas as to how we might attract some more
> experienced PCB designers to the project?
>
> And I have another idea.  We have a great deal of highly intelligent
> software people on this list.  Unfortunately, it's a huge learning
> barrier for them to try to make sense of the schematic.  Maybe we
> should try to break it down, page by page.  With enough people
> discussing it and asking what the heck things mean and all that, it
> could be a fun learning experience (not to mention valuable for your
> resume).
>
> In one sense, this project is going to take as long as it takes.
> We're all contributing in our spare time, and it's difficult.  But on
> the other hand, I'm anxious to have an open-architecture graphics card
> in my computer, and anything we can do to enhance the rate of progress
> will be a boon for the project.
>
> Any suggestions?
>
> I'm trying to figure out ways to make this project more fun and exciting. 
> :)