(Original) How to DE2-70 super? (SOC) (DE2-70)

Abstract
Examples of DE2-70 CD, CPU and SDRAM, SRAM are running at 100 MHz, whether to be able to super DE2-70, make the real data more beautiful?

Introduction
There are probably two types of super memory: super memory for CPU or super memory for memory. In the DE2-70, the CPU is not too large, just repeat the PLL, than there is a question about how to deal with the SRAM and SDRAM super large, the SDRAM will clock skew, so it is also related to phase shift.

After a day's experience, we can get the following conclusion:

Enable the following features:
100 MHz (50*2): SDRAM requires Phase Shift-65 degree

133 MHz (50*8/3): SDRAM requires Phase Shift-65 degree

150 MHz (50*3): SDRAM requires Phase Shift-5ns

If someone can go beyond the higher quota rate, you are welcome to share your approach.