Forum Discussion
GStre
New Contributor
New ContributorI'm doing a Modelsim simulation with the Arria 10 EMIF DDR4. Using the IP generated testbench. The abstract PHY option is relative fast, using the DDR4 memory model is painfully slow.
Running the IP generated test bench takes 420 usec of simulation time. I have a pretty good workstation and that 420 usec of simulation time takes about 3 hours. When I set up simulation options, ...
BoonT_Intel
Frequent Contributor
Frequent ContributorHi George,
Thanks for the details. Your finding is correct.
When you turn off abstract PHY, the simulation expect a memory component that allow the interface to perform read/write.
The bus functional model that generate using Platform designer (Qsys) will not work like a memory model (eg read/write from specific address). Thus, you have to replace the generic memory model in the project altera_emif_ddrx_model.sv model to make it work.
However, for system level simulation (eg, PCIE + EMIF), it is recommend to run the simulation using abstract phy mode as this will save the simulation time.
Rgds
BC
