What do I need to know to get ROMS for emulators?

Let us start our discussion of ROMS for emulators by asking the obvious question: what are ROMS in the first place? A ROM is the shortcut term for ROM image, meaning a computer file whose content is sourced from a "read-only memory" chip. This "read-only memory" chip (or ROM chip) may be part of the main board of an arcade game; the firmware of a computer; or of a video game cartridge.

Knowing that, what then is an emulator? An emulator is a type of software that is used to run ROM files on a PC. You need an emulator after you have successfully copied the older ROM chip content into a ROM file for use on a much newer version of a PC. Many people may no longer be familiar with ROMS or ROM files because newer forms of optical media have been developed like DVD-ROMs or CD-ROMs that have taken their place.

Other mediums, which have replaced ROMS, are magnetic media (inclusive of magnetic tapes and hard disks) and of course the high tech Flash Memory chips. In fact, the ROMS that emulators and console emulators can read often contain partially modified versions of the original content of ROM chips. The modification (which may involve use of header information, or merging info gleaned from more than one ROM chip) is necessary to permit easier functionality when used via emulators.
Can you yourself copy data from ROM files for use with emulators? It depends on where the ROMs were originally stored. If you were to get ROMs from arcade machines, that can take a lot of time and effort as well as skill because not many people are skilled in taking apart arcade machines. However, to source ROMs from other media, you may only require off-the-shelf (meaning, commercially available) hardware and some necessary skills to get the data from the read-only memory chips of such media.

One problem that you may encounter in getting ROMs data so that you can run these on an emulator is the fact that the gaming manufacturer may have put up protocols that will prevent the common tinker to manipulate ROMs data just like that. This problem was created by gaming manufacturers because they realized that allowing people to access ROMs data easily would allow their valuable data about the games to be easily manipulated by practically anybody with the necessary knowledge, skills and experience.

Hackers see this type of policy maintained by gaming developers to be a hindrance to their enjoyment of games. They thus spend huge amounts of time, energy and skills learning how the ROMs are protected and how they can penetrate such defenses so they can manipulate the ROM chip data for their own purposes. It is understood this type of practice is actually copyright infringement and goes against the rights of gaming developers over their copyrighted material. But hackers will be hackers so they keep on trying to hack into protected ROMs anyway until they crack the security code and are in the system.

This puts gaming developers somewhat at a disadvantage, especially since competition between games in the market is heating up. Even the well-made games may fall into obsolescence in a market where new and better games keep being produced yearly. This is also why the security of ROM data also has to be upgraded so that gaming developers will be able to make enough sales to recoup the huge sums they invested into gaming development in the first place.


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