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hey these are previous question papers and  architecture of

both 8086 and 8085 microprocessor to download click on this link

http://www.ziddu.com/download/6379996/Q.P.rar.html 

all microprocessors detailed decription ,to download click on this link 
 http://www.ziddu.com/download/6459572detailednotesonallmicroprocessors.rar.html