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AR# 21683

9.1i PAR - "ERROR:Pack:12 - The RLOC value of X16Y30 on component..." occurs when I use EDK


When I target the smaller Virtex-4 FX parts, MicroBlaze has a hard time fitting into the device, and PAR generates an error similar to the following: 


"ERROR:Pack:12 - The RLOC value of X16Y30 on component 

microblaze_0/microblaze_0/MFS_Reg_Sel<0> in RPM microblaze_0 creates a macro 

that is too large for the device. Use a bigger device."


To resolve this issue, add the following line to the system.ucf file: 


INST "microblaze_0/microblaze_0/*" USE_RLOC=FALSE; 


NOTE: Disabling the RLOCs reduces the FMax of MicroBlaze when many features of MicroBlaze are turned on. On a base MicroBlaze with no or very few features turned on, disabling RLOCs can improve performance.

AR# 21683
Date 05/19/2014
Status Archive
Type General Article
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