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MAME 0.127s | СКАЧАТЬ 9.57 МБ | 20.08.2008, 12:18 | 
MAME 0.125s - новое обновление эмулятора игровых автоматов для
Windows. Программа воспроизводит более 6200 игр, включая 3368
уникальных игр, которые выходили в 70, 80 и 90-х годах прошлого века.
С сайта разработчиков можно скачать несколько бесплатных игр. Скаченные
игры упакованы в ZIP-архивы, которые необходимо поместить в специальную
папку программы. Данный эмулятор работает из командной строки. Для
эмуляции большинства игр не требуется мощный компьютер, все игры
работают без наличия 3D видеоускорителя.
MAME stands for Multiple Arcade Machine Emulator. When used in
conjunction with an arcade game's data files (ROMs, CHDs, samples,
etc.), MAME attempts to reproduce that game as faithfully as possible
on a more modern general-purpose system. MAME can currently emulate
many thousands of classic arcade video games from the the very earliest
CPU-based systems to much more modern 3D platforms.
The ROM and CHD images that MAME requires are "dumped" from arcade
games' original circuit-board ROM chips, hard disks, and CD-ROMs. MAME
becomes the "hardware" for the games, taking the place of their
original CPUs and support chips. Therefore, these games are NOT ports
or rewrites, but the actual, original games that appeared in arcades,
complete with all the bugs, glitches, slowdowns, and subtleties of the
original game as it appeared in the arcade.
MAME's purpose is to preserve these decades of video-game history. As
gaming technology continues to rush forward, MAME prevents these
important "vintage" games from being lost and forgotten. This is
achieved by documenting the hardware and how it functions. The source
code to MAME serves as this documentation. The fact that the games are
playable serves primarily to validate the accuracy of the documentation
(how else can you prove that you have recreated the hardware
faithfully)?
That depends entirely on the definition of those words. In electrical
engineering, the word "emulation" has traditionally been used to mean a
very low-level reproduction of real life electrical signals. For
example, professional microprocessor emulator software comes with a
processor-shaped connection, which you can actually plug into a
motherboard and run instructions with it.
MAME runs simulated CPU instructions on top of simulated memory maps
and I/O spaces. If simulation had to be defined, there could be three
levels:
- Signal level. At this level, all the inputs and outputs of each chip
on the board would be simulated. Believe it or not, given current
processing power available, this would likely not run at anything close
to full speed even for the simplest games. Simulation at the signal
level would be required to produce a truly accurate emulation of
microprocessor-less games such as Pong and Monaco GP.
- Logical level. At this level, there is an assumption that one or more
CPUs is running the show, and those CPUs are emulated as a single unit,
as accurately as possible based usually on the specs for the CPU, and
sometimes based on actual probing of the CPU itself. Furthermore,
mapping of memory and behaviors of other chips (audio/video) are
replicated to varying degrees of accuracy. All games in MAME currently
run simulations at this level.
- HLE level. At this level, a High Level Emulation of large portions of
the game are used to simulate the behavior of multiple chips and often
even entire CPUs. Simulation at this level is usually very
game-specific and often behaves in noticeably different ways than the
original. For the most part, MAME tries to avoid using HLE unless
necessary, and it definitely does not support its use as a means of
accelerating the emulation.
Most people make the simulation/emulation cut based on a couple of
factors. One such factor is determining whether you can support all the
same games the original hardware did without any game-specific hacks.
MAME's CPU and sound cores pass that test literally every day as new
games are added. Some other emulators that rely on a HLE approach fail
it badly. A descriptive comment about the detail level of MAME's
drivers is "if someone can make an FPGA version of the game, the driver
documents it well enough", and that's actually happened for Pacman
using MAME as a reference.
In other words, MAME is against simulating games, but it's not against
simulating components. The only way you can emulate a game is to
simulate all the components. All those chips weren't really created in
C.
MAME is written in fairly generic C, and has been ported to numerous
platforms. Over time, as computer hardware has evolved, the MAME code
has evolved as well to take advantage of the greater processing power
and hardware capabilities offered.
The official MAME binaries are compiled and designed to run on a standard Windows-based system. The minimum requirements are:
-Any MMX-capable AMD or Intel processor (Pentium III or later recommended for current versions)
-Windows 98 or later (Windows 2000 or later preferred)
-DirectX 5.0 or later (included with all versions of Windows 98 or later)
-A DirectDraw or Direct3D capable graphics card
-Any DirectSound capable sound card
Of course, the minimum requirements are just that: minimal. You may not
get optimal performance from such a system, but MAME should run. Modern
versions of MAME require more power than older versions, so if you have
a less-capable PC, you may find that using an older version of MAME may
get you better performance, at the cost of lowered accuracy and fewer
supported games.
As of MAME 0.106 and later, MAME will take advantage of 3D hardware for
compositing artwork and scaling the games to full screen. To make use
of this, you should have a modern Direct3D 8-capable video card with at
least 16MB of video RAM.
Around the same time, MAME added minimal multi-processor support, if
you use the -mt flag. This means that some of the video processing can
be done on a second CPU core if it is available. To take advantage of
this, you should run MAME on a dual core (or greater) system.
Keep in mind that even on the fastest computers available, MAME is
still incapable of playing some games at full speed. The goal of the
project isn't to make all games run playably on your system; the goal
is to document the hardware and reproduce the behavior of the hardware
as faithfully as possible.
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