Initiially i created the separate projects for XC6LX16 and XC6LX45 individually. I added MicroBlaze for SPI and UART communication.When I am trying to generate bitstream for both these projects, in translate process it shows error.
ERROR:NgdBuild:604 - logical block 'Inst_Mblaze/microblaze_0/microblaze_0/MicroBlaze_Core_I' with type 'MicroBlaze_Core' could not be resolved. A pin name misspelling can cause this, a missing edif or ngc file, case mismatch between the block name and the edif or ngc file name, or the misspelling of a type name. Symbol 'MicroBlaze_Core' is not supported in target 'spartan6'.
But when i select device as XC6LX150 and i add SPI UART in MicroBlaze it generates bitstream without any error.