There are two ways to create a raw binary using Platform Builder:

1. Modify the config.bib file to generate a .nb0 file.
   Here are the lines to add:
   
   ROMSIZE=$(FLA_BUILD_IMAGE_SIZE)
   ROMWIDTH=32
   ROMSTART=$(FLA_BUILD_IMAGE_START)
   
   OR
   
   ROMSIZE=$(RAM_BUILD_IMAGE_SIZE)
   ROMWIDTH=32
   ROMSTART=$(RAM_BUILD_IMAGE_START)
   
   Depending if you have IMGFLASH=1 or not.
2. Use "cvrtbin" from the command line, that is what makeimg uses to create the .nbX files in the above method.
   e.g. .> cvrtbin -r -a 0x8c105000 -w 32 -l 0x1000000 nk.bin