Most 'new' chip musicians use a Nintendo Gameboy along with the LSDj program, a few use a different program called Nanoloop. There are many PC trackers availiable, famitracker being an obvious one, you can even create chiptune in FL Studio with VSTs although the use of software is usually frowned upon in the community, hardwares just more fun.
I myself dabble with Nanoloop 1.3, LSDj, Nitrotracker (A tracker for the DS that can do pretty much anything.) famitracker and Pocket Music.
Easiest option is to get onto the LSDj website, or the Nanoloop one and try out the demos that are availiable for emulation on a PC.