| --- Log opened Wed Jul 13 00:00:36 2016 | ||
| olofk | stekern, kc5tja: I hopefully get the slides tomorrow, but the short story is that nvidia wanted a replacement for their CPU, evaluated a few options (including different ARM cores and building a new arch), and came to the conclusion that it would be best to build their own risv-v core | 00:02 |
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| olofk | kc5tja: Awesome! Just let me know if you want me to take a look at your .core files | 00:03 |
| pigeon_ | Hi all, I am looking for the VirtualBox image for the 'ordb2a-ep4ce22' board. The link on this page 'http://opencores.org/or1k/Ubuntu_VirtualBox-image_updates_and_information' seems to be broken. | 10:30 |
| pigeon_ | http://opencores.org/or1k/Ubuntu_VirtualBox-image_updates_and_information | 10:30 |
| olofk | pigeon_: I don't think that has been maintained for many years unfortunately. Is there anything in particular you need from the image? | 10:33 |
| -!- Dan_ is now known as Guest66626 | 10:33 | |
| pigeon_ | I have recently inherited the board and of the material I have read that image seems to be a good place to start, It seems to contain many useful tools along with a tutorial. | 10:39 |
| pigeon_ | olofk: It would seem ' openrisc.opencores.org ' does not exist anymore, was its contents moved to another location? If the image is not attainable, what is my best bet for using the board? | 11:11 |
| olofk | pigeon_: I have been planning to add support to build the ordb2a with FuseSoC, but never gotten around to do it. Might be a good reason to work on that | 11:41 |
| olofk | I can check if I have some old pre-built image around as well if you just want to get something running | 11:41 |
| pigeon_ | olofk: Yeah if you had an old image that would be great, how can I get it from you? | 11:54 |
| olofk | pigeon_: I fax it over? :) | 11:55 |
| olofk | Ha! I think I actually found one. Will send you a link | 11:55 |
| olofk | https://www.dropbox.com/s/hpf6m1ybxk4rik9/orpsoc_top.svf?dl=0 | 11:57 |
| olofk | I haven't tested this in a few years though | 11:57 |
| olofk | You will need urjtag to get it on the board | 11:57 |
| olofk | ah.. you need a bsdl file too | 11:57 |
| olofk | https://www.dropbox.com/s/ifrhdx7b735rpxt/ordb2a.tar.gz?dl=0 | 11:59 |
| olofk | That's an archive with the image, bsdl file and urjtag scripts | 11:59 |
| olofk | Can't rememer exactly how to run urjtag, but it's probably something like "jtag jtag.cmd" or "jtag -c jtag.cmd" | 12:00 |
| olofk | Got to run | 12:00 |
| blueCmd | olofk: wooo! | 12:07 |
| pigeon_ | olofk: or send a pigeon! Thanks, much appreciated! | 12:08 |
| ZipCPU | Is there a simple way to reason through/about CPU pipeline stalls? My pipeline stall logic is ... becoming more and more confused every day. | 15:40 |
| olofk | I would sat that's one of the hard parts where all you get all your corner cases unfortunately | 15:51 |
| ZipCPU | I think that's what I'm discovering. :/ | 15:59 |
| ZipCPU | At least I think I've weeded the corner cases out of the instruction cache--that's another problematic one. | 15:59 |
| --- Log closed Thu Jul 14 00:00:38 2016 | ||
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