I noticed awhile back that mame support was being worked on for the Nintendo VS games, which included both Super Mario Bros., and Dr. Mario. I dug around a little, and found the source...(posted 9788 days ago)Quoted from the mamewip page at davesclassics.com:
January 26, 1999 - Whoo. One of the few things remaining for MAME to emulate that I am still looking forward to is underway. Howie Cohen is working on a Nintendo VS game driver. Currently, it is in a very preliminary stage. A few games are playable however, such as: Golf, Lady's Golf, Soccer, and Mach Rider (kinda). Being that this is in very early stages, there is no zapper support yet, so Duck Hunt and Hogan's Alley aren't playable as of yet. The games colors aren't right yet either (although Duck Hunt is fairly close). The emulator does have sound (on the same level as MESS's NES emulation and MAME's Punchout sound), and there are a few graphic glitches. As it progresses more, it will obviously be reported here. There are some early screen shots of Hogan's Alley and Soccer which you can check out here. More screen shots will be posted in the coming days, or as soon as thing develop furthur.