Re: [casper] DDR Memory Modules for Roach2

So I have an application where I'd really love to use a 16 GB dimm. What do you think are the chances we can get one of those approved? (I might be able to do some of the legwork myself / hack up the gateware controller as needed) Are there any special addressing considerations for ROACH2?

Re: [casper] DDR Memory Modules for Roach2

Hi Jason, I think Mo had different Kingston DIMMs which are not 1gig, but the supplier claims that they are compatible. We have to be very careful when choosing the DIMM as we can only support a few different modules as the gateware controller has the SPD information hard coded. I am unsure of th

[casper] DDR Memory Modules for Roach2

The following web page lists two memory modules for use in the ROACH2: https://casper.berkeley.edu/wiki/ROACH_DDR3_Memory_Modules Kingston KVR1333D3S8R9S/1G Samsung M393B5773CH0-CH9 Mo at Digicom was only aware of the Kingston Module as being approved for use in the ROACH2. He also re

Re: [casper] Low power non-linearity

Hi Danny and Dan, Thanks for your advices! The main cause was indeed the quantization and the FFT bitwidth. I did increase FFT bitwidth to 25 and increase the quant block output to ufix_64_25 To do so I had to also increase the vacc bitwidth and store the output in 64bit (two 32bit bram) After all

Re: [casper] ROACH2 updates - uboot, kernel, romfs and tcpborphserver3

Correction: To get the new macros to load one must also erase another section of flash. This can be done in one step so please replace the instruction in 4b with: "setenv writeuboot protect off 0xfff4 0x\; era 0xfff4 0x\; cp.b 0x400 0xfff8 \$\{filesize\}" On Thu, Oc

[casper] ROACH2 updates - uboot, kernel, romfs and tcpborphserver3

Hi all, we've made some fixes to the ROACH2 kernel, u-boot and rom filesystem. TCPBorphserver3 has also been updated, this has been added to the rom filesystem and nfs. Grab the files here (NOTE: The nfs tarball must be untarred as root for correct permissions): https://github.com/ska-sa/roach2_nf