1. 
   KERNAL
   The KERNAL is Commodore`s name for the ROM-resident operating system core in its 8-bit home computers; from the original PET of 1977, followed by the extended but strongly related versions used in its successors; the VIC-20, Commodore 64, Plus/4, C16, and C128. The Commodore 8-bit machines` KERNAL ...
   Found op http://en.wikipedia.org/wiki/KERNAL
   
   
2. 
   kernal
   kernel
   Found op http://foldoc.org/kernal
   
   
3. 
   kernal
   1) Kernel
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/kernal/1
   
   

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