Using this assembler and simulator, you can assemble and simulate your asm project for almost all 8 bit micro-controllers from microchip. This software supports almost all (nearly 200) micro-controllers of PIC10xx, PIC12xx and PIC16xx series.
You can compile and simulate most of microchip/mplab's samples directly without any change. The assembler doesn't recognize macro. So, for some mplab samples, you have to change some code.
Watch support. Variables are added to watch directly from your asm code.