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Date: Fri, 30 Aug 2013 17:26:21 -0400
From: Yaniv Sapir <>
To: john-dev <>
Subject: Re: Katja's weekly report #11

Hi Katja,

Hope you are feeling well by now.

The register values you sent a while back do not chime as anything
familiar. I am out of ideas right now, except for one postulation that we
have here regarding the AXI - Epiphany/FPGA interface logic. Unfortunately,
we do not have the bandwidth to check that theory now, so we'll have to
live with this. It may as well not be a problem with the actual Parallella

As for the other questions - this is really far from my territory... (what
is BRAM, OCM??). I will forward you question, but it may have to wait until
Tuesday (we have a long weekend for Labor Day).


On Fri, Aug 30, 2013 at 5:07 PM, Katja Malvoni <> wrote:

> Hi Alexander, Yaniv,
> How should I proceed with fixing reliability issue for bcrpyt on Epiphany?
> I'm able to do transfers from one location in DDR to another one using DMA
> implemented in PL but I'm not able to do DMA from or to bram. I'm trying to
> transfer data from bram to high OCM (address range 0xFFFC000 - 0xFFFFFFFF)
> and vice versa. I think that these addresses aren't used by anything else,
> Yaniv is that correct?
> I'm able to connect simple custom peripheral to bram but so far I haven't
> managed to read written data on host side.
> I apologize for inactivity during last few days, I was ill.
> Thanks,
> Katja

Yaniv Sapir
Adapteva Inc.
1666 Massachusetts Ave, Suite 14
Lexington, MA 02420
Phone: (781)-328-0513 (x104)
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