I would like to know whether non listed microcontrollers can be used on the Keil encironment by dding their .dll files. I would like to use a microchip PIC 14000 microcontroller on the Keil environment.How can I do this.Please help.
No - the PIC is a totally different architecture; it has a totally different instruction set. You need a different compiler. uVision has the facility to support many variants of the 8031 architecture, but not different architectures!