Re: [Xc3sprog-users] xc3sprog and Digilent "atlys" board?

[Joris v. R. <jor...@jo...>]

Hi Uwe,

On 2012-11-23, Uwe Bonnes wrote:
>     Sidney> Hello, I am currently considering buying a Digilent Atlys
>     Sidney> board
>     Sidney> (http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,400,836&Prod=ATLYS),
>     Sidney> and I am wondering if it is possible to program its
>     Sidney> Spartan-6 using xc3sprog.

> If you buy the card and test, please let me know the results.

I just got an Atlys board. I can confirm that xc3sprog programs the
Spartan-6 FPGA on the Atlys board without any issues if a separate JTAG
cable is used.

The Atlys board also has an on-board JTAG-USB programmer based on a
Cypress FX2, but it uses a proprietary USB protocol and therefore does
not work with xc3sprog.

Programming the SPI flash chip on the Atlys board needed some work.
xc3sprog SVN r717 gives the following error message:
  Found Numonyx Device, Device ID 0xba18
  M25P: Unexpected RDID upper Device ID 0xba

I added support for N25Q devices in progalgspiflash.cpp to fix it.
This is now committed in SVN r718 (shout if you disagree).

Of course, a bscan_spi bitfile is needed to access the SPI memory. The
xc3sprog distribution already contains xc6slx45-fg484.bit which appears
to work with the Atlys board. However, the Atlys FPGA is xc6slx45-csg324.
Do you know if it is safe to use bscan_spi files for a different
package, or should I build a separate bitfile for csg324?

Kind regards, Joris.