Questions about the chip type PICOS18

[memorymem]

I would like used in embedded systems PIC18F2520 and PIC18F4520 PICOS18 chip, but can not find where to modify the chip type, and PICOS18 example is the use of essentially the PIC18F452.
Hope to get the relevant master's instructions.
Thank you.

 

[john blue]

You can also use:
FreeRTOS: FreeRTOS-A Free RTOS for ARM7, ARM9, Cortex-M3, MSP430, MicroBlaze, AVR, x86, PIC32, PIC24, dsPIC, H8S, HCS12 and 8051
UCOS 11: Micrium - Home