[lowrisc-dev] Re: [lowRISC/lowrisc-chip] Errors : Add a DMA master device in LowRiSC (#66)

Dr Jonathan Kimmitt jrrk2 at cam.ac.uk
Wed Aug 23 09:26:29 BST 2017


The tutorial mentioned is intended for use with the following example:

git clone -b vga --recursive https://github.com/nbdd0121/lowrisc-chip.git

 From that example, you should be able to discover the differences from 
the v0.3 release (primarily in LowRISCChip.scala)

This code has not been tested with the v0.4 release, but since the 
changes are minor, it should be possible.
However the v0.4 release is heavily packed with logic and it may not 
easily be possible to add more functionality to it successfully.

I'm sorry Chisel error messages are not more sanitary but this is 
outside of our control. The fragment you give is insufficient to learn 
anything.

Regards,
Jonathan

On 23/08/17 09:11, sumancu wrote:
>
> Hello,
> I'm trying to add simple DMA device to the lowrisc (lowRISC 0-4 
> milestone release), I'm following the tutorial on the following link:
> http://www.lowrisc.org/docs/internship-2016/device-tutorial/
>
> But it seems the code there is not compatible with the latest release 
> and the compilation fails, could you please help with the syntax or 
> code that adds DMA device that is working with the latest release?
>
>
>     Errors are:.
>     .
>     .
>     .
>
> [error] (lowrisc_chip/compile:run) Nonzero exit code: 1
> [error] Total time: 15 s, completed Aug 23, 2017 1:42:11 PM
> /home/ssau/lowrisc-chip/Makefrag-build:9: recipe for target 
> '/home/ssau/lowrisc-chip/vsim/generated-src/Top.DefaultL2Config.sv' failed
> make: *** 
> [/home/ssau/lowrisc-chip/vsim/generated-src/Top.DefaultL2Config.sv] 
> Error 1
>
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