Description

When using the PPC440MC_DDR2 Core, I find that long build times result, especially when using the optimal UCFs.  

How do I resolve this issue?

Solution

The long NGDBUILD runtime is caused by a wildcard in the UCF which grabs all sub-instances of the PPC440MC_DDR2 Core, instead of just the single core instance. 

To resolve this issue, remove the wildcard from the instance name. For example, change: 

INST "u_ddr2_top/*" AREA_GROUP="AREA_DDR2"; AREA_GROUP "AREA_DDR2" RANGE=SLICE_X0Y61:SLICE_X15Y141; 

To: 

INST "u_ddr2_top" AREA_GROUP="AREA_DDR2"; AREA_GROUP "AREA_DDR2" RANGE=SLICE_X0Y61:SLICE_X15Y141; 

This issue is fixed in the example UCFs starting with PPC440MC_DDR2 v2.00.b.