skaboy posted on Mar 30 2006 at 04:30 AM said:
Dear all,
I have MAME and DrMD on my GP2X.
Although I can't claim to have owned any arcade machines, MAME seems pretty freely distributed and I was wondering about the legality of this. To be completely conformist, should I really remove MAME from my GP?
I own a Megadrive so I gather I'm allowed to use DrMD and do intend to donate to Reesy as the author. If someone I know also has a Megadrive, can I legally give them a copy of DrMD? I know they could download it themselves but someone has asked me to do a "start up" SD for them.
Thanks as always in advance.
Its actually very easy; I really don't know why virtually everyone on the net gets it all muckered up
Emulators themselves are generalyl fully legal; I'd say 100% legal except that it can vary by jurisdiction and relative insanities. ie: Emualtion as a technology is 100% legal -- always has, always will be -- and is a standard tool in computer science. (Ever wonder how Java works? Its an emulator. Wonder how applications are developed for mobiles, cars, and other things? yep -- emulators.)
The onyl question, with regards to emulator software is if they're including IP from someone else --- ie: Some emulators might include a BIOS or PROM dump for 'convenience', but this is clearly copying someone elses materials around so is not legit; hence, any halfway respectible emulator does not include such materials -- you need to find a BIOS (by dumping it yourself, or however you like).
To answer your question - MAME is 100% original software by its many authors (including a number of us from this very board
; it (and other emulators) are written by looking at schematics, the actual PCBoards making up the device and lookign up part numbers and deducing things from connections, and working out through the code used in the devices, and many other tricks. Not rocket science, just tedious and tricky. So its 100% legit, just like opening up your car and figuring out how it works is.
The only questionable thing is distribution of some other entities property -- BIOS roms, game roms, game disks, etc etc. This is obviously usually illegal -- being copyright infringement. (Its not 'theft', since nothing is removed from the party; it is infringement becasue you're illegally duplicating something you do not have license to.)
However, this is complex -- many companies provide permission to dupe their old games, while other games have lost their licenses entirely (company gone under, not bought, etc), while others are merely lost.. certainly most (99%?) of games are owned by _someone_, though only some are relevent (ie: SNES, NES, GB, Genesis, etc are very actiuvely used, and thus very clearly licensed. Amiga and Atari ST on the other hand... very much abandonware most of the time. Vectrex -- the company opened them up to use as you see fit, though they retain license etc.)
Again, it also varies by jurisdiction, however. The US has gone bizarre for instance, so even decrypting some encrypted games can be illegal; however, the DMCA allows for circumvention of sed encryption if the company nolonger supports it and you wish to transfer it to a new medium to make use of something you have purchased. Laws like that make you crazy.
I'm not in the US, so if you are.. you'll have to sort it out for yourself
However, my guidelines above and in the past should clarify enormously.
jeff