[Milkymist-devel] about LM32 onchip debug

[Sébastien Bourdeauducq]

On Sunday 20 September 2009 22:39:58 Uwe Bonnes wrote:
> Anybody experience with Spartan6 MCB?

The MCB is proprietary and Xilinx wants customers to use it in a controlled 
way through their Memory Interface Generator (MIG) that I do not like at all.
I'm planning to use MCB later on, but this will probably be through reverse 
engineering of MIG.
 
> What effort would it be to interface LM32 to the SP601 onboard DDR2 ram?

If you use HPDMC, you need to:
- re-do the clocking
- adapt the I/O registers
- configure proper command timings (tRCD etc.) and array geometry
- adapt the init sequence (in the BIOS)

A good document about the DDRx SDRAMs:
http://www.techonline.com/article/pdf/showPDF.jhtml?id=2078010911

Sébastien