I am using Keil's Evalution version now for my project but there I found its only allow 2KB code to build not more than that. but my code goes more than 2KB and now I want other simulator to build the HEx file. so please suggest me link for download of any free simulator where I can build hex file for 89c51 C Code which size is more than 2KB.
Contact Raisonance. They will tell you which Compilers can be used with the RIDE. It is like MPLAB which is an IDE. MPLAB is not a Compiler but you can use Compilers like C18, XC8, Hi-Tech C with MPLAB IDE. If you email raisonance then they will tell you which Compiler can be used with RIDE. You should contact the compiler vendors and ask whether your micro is supported by their compilers.