[lowrisc-dev] lowrisc 0.5 release on custom Virtex 7 2000T

Dr Jonathan Kimmitt jrrk2 at cam.ac.uk
Tue Jan 23 08:46:29 GMT 2018

Hi Anup,

I don't know whether the Ethernet is the primary capability of interest. 
If so, you

need to be aware that our circuit design was specifically targeted at 

of the Nexys4-DDR. If you have a different system such as MII, GMII, or 
XGMII then this

block would need quite a bit of adaptation, but there are some adaptor 
IPs in the Vivado

library which may be a good starting point. You can also consult Alex 
Forencich's repository

which has a number of IPs for different variations of Ethernet.



On 23/01/18 08:40, Anup Kini wrote:
> Hi Alex,
> Thank you for getting back.
> I am sorry, it was my mistake. The vivado tool ran out of memory and
> crashed.
> I was able to build it successfully on a bigger server.
> I have started with the port to V2000T, looking through the scripts to
> figure out the block design and the additional clocks required.
> Thanks & Regards,
> Anup Kini.
> On Tue, Jan 23, 2018 at 2:03 PM, Alex Bradbury <asb at lowrisc.org> wrote:
>> On 19 January 2018 at 10:27, Anup Kini <anupkini at gmail.com> wrote:
>>> Hi All,
>>> I am trying to build the lowrisc 0.5 release for a custom Virtex 7 2000T
>>> device.
>>> To begin with I tried to build the nexus 4 ddr design, but the
>>> implementation fails.
>>> Has anyone been successfull in pulling the latest 0.5 release from github
>>> and building it.
>>> I have attached the vivado log in this mail.
>>> Looking forward for any help.
>> Hi Anup. Thanks for trying our latest release. The log doesn't seem to
>> have made it through with your message - could you perhaps try to
>> share it again?
>> Thanks,
>> Alex

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