Re: [ts-7000] Re: How can i use/manipulate FPGA in the TS7800??

["Catalin Ionescu" <>]

Hi,

Indeed, changing the FPGA content will most obviously disrupt NAND, SD and RTC usability. In my case I have a very simple setup using the NAND for booting, with a custome 2.6.27 kernel, and switch immediately to an USB flash for root. From there I can change the FPGA content without any fears. So far I have implemented in the FPGA, mostly for testing purposes, just the RTC access part.

Regarding NAND and SD access, actually I'm not sure I willbe interested in because of my target application requiring huge bandwidth (almost all the 50MHz PCI bandwidth) between a device connected to the PC104 connector and the Orion chip.

Some of the stuff I have written for testing purposes, along with instructions on how to replicate my setup, I will make public some time in the near future.

As for TS official position, I think I start understanding them. As the FPGA is really important for TS-7800 functionality, it's risky to let everybody think it can be reprogrammed without severe limitations or really great care. If it would have been just the gate between the Orion chip and the PC104 connector, most probably it would have been made publicly available. Right now, as TS says, it contains proprietary structures (and I don't intend to argue on this matter) and it also is the key to make the board so attractive.

Alternative solutions for the FPGA, given the board schematic, are possible, but it's not my final target!


Best regards

On Sat, Oct 25, 2008 at 12:37 PM, Damir Dzemidzic <> wrote:

Hello Catalin,

first thank you for giving us the code to access the TS7800 FPGA.

Secondly, I have a question related to SD and FPGA. If we try
experiments with TS7800 FPGA, would it interfere
with SD card since they claim 80% of FPGA space drives the SD interface?

Kind Regards

--- In ts-7000%40yahoogroups.com, "a_io" <catalin.ionescu.ro@...> wrote:
>
> Hi!
>
> Indeed, I forgot about setting the frequency. By using the following
> sequence of commands you get what you might expect:
>
> > cable ts7800
> > detect
> > part 2
> > frequency 1000000
> > svf <your SVF file>
>
> And I have tested this commands with a very simple structure just to
> insure the FPGA gets reprogrammed. More serious stuff will come really
> soon.
>
> Cheers!
>

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