For those of you wonder what this is all about, check out: http://www.dlharmon.com/sbc.html
>If you want pretty-printed partlist, here is my program bom.c that makes it >for Ronja: > >http://ronja.twibright.com/schematics/bom.c > >And here is the Makefile that calls it: > >http://ronja.twibright.com/schematics/bom.c > >The Makefile is set up that it generates also online pictures from the >schematics, PCB etc. You can suck out all the sources from the Ronja website >except .php code (they are interpreted by the webserver instead). > >If you want the entire cvs tree to be able to reuse some tools from Ronja, >tell me, I'll send as a .tar.gz. > >Cl< > >On Tue, Oct 12, 2004 at 10:05:23PM -0500, Darrell Harmon wrote: >> Karel Kulhavy wrote: >> >> >Hello >> > >> >I am Clock of the Ronja project >> >http://ronja.twibright.com >> >I am using gschem and PCB on Ronja project too. >> > >> >I would like to ask why did you make the SBC? For someone, or for >> >your own use, or just for fun and experiments? >> > >> >There are problems with the schematics. For example the dp83846A.sym >> >is lacking the device= attribute and the attribute is omitted in the >> >schematic >> >too. >> > >> >Are you planning to fix these problems and/or publish a complete guide how >> >to build the device, including partlists, soldering instructions, where to >> >get the parts etc. in the style of Ronja project? >> > >> >What software setup were you using to program the XILINX and what does the >> >XILINX do in the computer? >> > >> >Are you planning to publish some instructions how to load and boot Linux >> >into >> >the device? >> > >> >Is it necessary to have proprietary programs (Windows, some Xilinx >> >programs) >> >to program the XILINX inside and/or Linux into the device? >> > >> >Regards, >> > >> >Cl< >> > >> > >> > >> > >> > >> I have just build this for the fun of it. The it intended as a genral >> purpose embedded computer. It is designed wiht the intent of data >> acquisition and control work. Two things I plan to do with it include >> software defined radio and digital scope via addon cards. The >> schematics have not been updated since I ordered the board. Yes, I have >> been intending to update the schematics. Most of what is missing was >> drawn in as I built it. I just have not had a chance to do it. I have >> all the invoices stapled together and creating a partslist should be >> easy. Everything but the SDRAMs, FPGA and NAND flash come from >> Digikey. I just need to clean up the source and release a tarball of >> the bootloader, and a kernel patch. I am not quite done with the kernel >> patch. >> >> The FPGA is not used for anything on the board. I just included it to >> make interfacing high speed ADC's and DACs easier. It can be left of >> for a significant cost savings. I dislike having to run proprietary >> software, but there are no alternatives to program a FPGA. I use Xilinx >> ISE webpack. Xilinx only charges for the CD itself $5. It is supposed >> to run on windows, but it works under wine with it set to emulate >> win2k. For simulation I use Icarus Verilog. >> >> Loading up linux is easy with the AT91RM9200. It has a mask ROM >> containing a boot uploader. This allows 16kB of data to be uploaded >> and run. A jumper selects if this data comes from the serial port or the >> serial data flash. Simply jumpering it to the serial allows the >> firmware to be loaded. The firmware then allows the flash to be >> programmed with itself and a kernel. You will get a better idea how it >> works when I release the source. >> >> I like the Ronja project and how well it is documented. I hope to >> achieve this level of documentation on my SBC. It will be more >> difficult as there are more parts, and I dont have much time to spare >> (getting EE degree). Let me know if you have any more questions or >> suggestions. The SBC is much a work in progress. >> >> Darrell Harmon >
