I am having a problem in Code banking. I am trying to use USERCLASS facility of Cx51 compiler for more than 64K area, it is giving an error. For user class => CODE_APP(C:0x11000-C:0x12000) this is creating an error "JUMP TRAGET OUT OF RANGE" but I am using code banking mechanism. Please provide me the corresponding solution, so that I can use USERCLASS for more than 64K code size.