Welcome to Linux Questions.
I do not known very much about the subject,
but Google will tell a lot, hopefully.
1) keywords for google ...pic 8051 linux .. 8051 pic linux ..
.. .. dspic30f linux ..
examples
http://www.opencircuits.com/DsPIC30F...nt_Board#Linux
http://www.pjrc.com/tech/8051/
2) "Linux Question > right coloumn > <Search>" .. 8051 ..
http://www.linuxquestions.org/questi...highlight=8051
It is kind of against the rules to use SMS spelling
(Plz -- plzzz - u - etc.)
Being a knowledge base, english is appriciated in LQ.
Good Luck !