How to place 4k array in program memory

[virtual]

I am using PIC16F877A. I want to place constant data in ROM program
memory which is 8K in PIC16F877A. My array size is 4k. I am using
CONST and BYTE CONST directive to place data in array, but get error:
too big data. How to resolve this problem ?

[Ttelmah]

You can place a ROM table this size, using #ROM, _but not access it as a variable_. CCS, on the 16 chips, only allows const tables up to 256 bytes to be used. What you will need to do, is to place a #ROM directive wth the table at 0x1000, and then access this using the read_program_memory function.
This is a 'historical' limitation, few of the 16 chips, allow direct access to the program ROM, so the tables had to be constructed using RETLW instructions, and a table jump, which only supports 256 addresses max.
Generally much easier to do, in PIC18 chips.

Best Wishes