Here are the files that Mike kindly share, in case someone in the future is looking for a DRAM with ppc interface. https://drive.google.com/file/d/1sdp1kHDDB5wNqE2S14-5lguI5oUv0kL3/view?usp=sharing
By the way setting the row address in 15 indeed allows me to access 1.2GB of the DRAM, now I think the default values are set thinking to support 1GB dram option also. El sáb., 5 sept. 2020 a las 3:03, Mike Movius (<[email protected]>) escribió: > > Hi Sebastian, > > A couple of years ago I managed to get the ddr3 working in a design with a > PPC interface to read the memory. I think the design was based on the > ska-sa mlib-devel repo and only caters for firmware read/write. We modified > the roach1 dram controller to get the ppc interface to work. You (or any > casperite for that matter) may contact me directly for the yellow block > files. Regards, MM. > > > ________________________________ > From: Sebastian Antonio Jorquera Tapia <[email protected]> > Sent: Friday, 04 September 2020 9:57:18 PM > To: [email protected] > Subject: Re: [casper] ROACH2 DRAM parameters > > After writing this I think I found it, it was the ddr3_controller.mpd file > which overwrites the parameters. I am going to check if now I have more > allowable addresses. > > > El vie., 4 sept. 2020 a las 15:08, Sebastian Antonio Jorquera Tapia (< > [email protected]<mailto:[email protected]>>) > escribió: > > Hello Casperites, > I know that the DRAM block in the ROACH2 is itself a trouble. I have tried > to make a model using the blocks in the casper-astro github but I couldn't > get any response of the block. > > In some thread of the mailing list I found the repo of the SMA where I > could use the DRAM without the PPC interface, but only works using the > addresses in the range (0-2^24) so using this implementation we could use > 603MB of the DRAM. > https://github.com/Smithsonian/mlib_devel< > https://github.com/Smithsonian/mlib_devel> > > Our ROACH2 has a m393b5773 memory stick, reading the datasheet it says > that this module has 3 banks, 15 rows and 10 columns. Poking around in the > pcores/ddr3_controller/hdl/verilog/ddr3_controller.v I found that > configuration has the same default parameters I mention. > But after compiled a model I look at the > XPS_ROACH2_base/hdl/system_ddr3_controller.v and I found that the row > address is now 14... So in some stage of the compilation the parameter is > re written. > > There is a reason for that, or it is just a bug? If its the second one, > there is any recommendation to where start to look at? > I dont think that its made by other hdl instantiation because in the > ddr3_conotrller file the 14 value is written using a number and not a > parameter. My main suspect is some matlab oop. > > -- > You received this message because you are subscribed to the Google Groups " > [email protected]<mailto:[email protected]>" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]<mailto: > [email protected]>. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/486133a4-67a6-4420-9df5-0c5afe9b5128n%40lists.berkeley.edu > < > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/486133a4-67a6-4420-9df5-0c5afe9b5128n%40lists.berkeley.edu?utm_medium=email&utm_source=footer > >>. > > -- > You received this message because you are subscribed to the Google Groups " > [email protected]" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]<mailto: > [email protected]>. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAASoV%3DPYO8sGAAO3OgsOE7UdH5zsxhB%3D_G_qeRMm6CWc6MSxmg%40mail.gmail.com > < > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAASoV%3DPYO8sGAAO3OgsOE7UdH5zsxhB%3D_G_qeRMm6CWc6MSxmg%40mail.gmail.com?utm_medium=email&utm_source=footer > >>. > > > Please consider the environment before printing this e-mail > > View the Reutech Radar System online disclaimer at > http://www.rrs.co.za/links/E-maildisclaimer.asp > -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAASoV%3DNXY5O%2BmpUUMZ8ogZGRYdBwDeyjrcvsusnejXvmZwWkXg%40mail.gmail.com.
