I am using LCD 16x2, PIC16F877a and I am simulating on proteus. Can any one give me the code so that my circuit can display the message "Hello". on the attachment is the asm file, hex file, proteus circuit design

 

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I know that there are sample PIC circuits supplied with Proteus. Assuming your instance of Proteus has a licence key for the PIC series that you are using, I would suggest you load a sample and interrogate the source code that they have used for similar applications.