Here's the roundup of our posts for December (see also our
previous roundups and our
profile page. Comments welcome on this thread! Check the original posts on gplus for comments too.)
2015-12-05 last year's World of Commodore photos from the Toronto PET Users Group
2015-12-11 Some ideas to debug and monitor your 6502-based system
2015-12-18 12 emulators, offered in order of increasing obscurity of their implementation language: from C to VAX assembly
Also, as a bonus, our
year-end round-up post, strictly part of January. We name-check a good handful of 6502 homebrew systems from 2015, survey the various things we've covered in posts ("We've posted about emulators, repairs, 6502 timing, weird and wonderful 6502 machines, various software adventures and even 6502 architectural extensions"), and link to some of the posts which attracted an interesting discussion.