MIPS processor simulator

Emulators

Emulators are software that allow to emulate a MIPS processor and eventually other devices, such as timers, serial ports, hard drives.

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Open Virtual Platforms (OVP) OVPsim

Open Virtual Platforms (OVP) () includes the freely available simulator OVPsim, a library of models of processors, peripherals and platforms, and APIs which enable users to develop their own models. The models in the library are open source, written in C, and include the MIPS 4K, 24K, 34K, 74K, 1004K, 1074K and M14K cores. These models are created and maintained by Imperas () and in partnership with MIPS Technologies have been tested and assigned the MIPS-Verified(tm) mark. The OVP site also includes models of ARM, NEC, Power Architecture, Tensilica and OpenCores/openRisc processors. Sample MIPS-based platforms include both bare metal environments and platforms for booting unmodified Linux binary images. These platforms/emulators are available as source or binaries and are fast, free, and easy to use. OVPsim is developed and maintained by Imperas and is very fast (100s of million instructions per second), and built to handle multicore architectures. To download the MIPS OVPsim simulators/emulators visit .

GXemul

emulates ARM, M88K, MIPS, PowerPC, and SuperH processors and machines. The MIPS emulation is fairly complete as it can run NetBSD, OpenBSD, Linux, Ultrix, and Sprite. It emulates several different MIPS ISA I-IV and MIPS32/64 processors. , , , , HPCmips, SGI, and Algorithmic machines are among the currently emulated MIPS machines; however, the best supported of these machines is probably the DECstation 5000/200. The GXemul homepage is at .

SimOS

models hardware similar to that of machines sold by and . The key component of such machines is the CPU, and SimOS currently provides models of the MIPS and and Digital Alpha processor families. In addition to the CPU, SimOS simulates caches, multiprocessor memory busses, disk drives, ethernet, consoles, and other devices commonly found on these machines. By simulating the hardware typically found on commercial computer platforms, porting existing operating systems to the SimOS environment is easy. IRIX 5.3, 6.4 and Digital UNIX have been ported; an Alpha port of Linux is being worked on. The project, which is hosted at , seems to have been active in the 1998-2001 timeframe. Nothing new has been added since then and the overall status of the project is uncertain.

There is a simulator based on SimOs. Currently it support two cpus, timer, DUART, genbus, memory controller, dma, ether card and it also support gdb remote debug. It can run and linux 2.6 kernel. The NICAT L4 Pistachio can be run in SimBCM.

Sulima

Sulima is an instruction set architecture (ISA) simulator, originally designed as a research and teaching tool for internal use by the Distributed Systems Group at the University of New South Wales. The documentation is sparse but refers to the use of gcc-2.95 which indicates a very old project. The Sulima homepage may be found at .

MIPSsim

is MIPS Technologies' proprietary MIPS simulator. It actually is more like a family of several MIPS simulators which differ in performance and accuracy allowing the user to choose the right tool for the purpose. Linux supports MIPSsim as a special target platform.

MipsSim

MipsSim is a MIPS emulator for the educational operating system. It's a fairly simple emulator, written in Java, that emulates a R3000 processor. This project seems to be quite old and inactive (the emulator needs some modifications to compile with recent JDK). The MipsSim homepage ~gfa/MipsSim.html is now dead; it fortunately has been at the .

SPIM

SPIM (which is just MIPS spelled in reverse) is an emulator that supports a MIPS32 instruction set (no MIPS64 bit support) with some minor restrictions in available instructions. It works by interpreting MIPS assembler source code and thereby avoids binary "complications". It seems most suitable for learning the basics of MIPS assembly language. SPIM is available from in source code and binary executables format for Linux, Windows and Mac OS X (non native, running in X11) . The latest version is 7.5, dated August 2009.

VMIPS

is an emulator. VMIPS comes with a few standard devices: SPIM-compatible console device, Standard clock device, Halt device and 5000/200-compatible devices. VMIPS isn't updated that often (the last update was in January of 2005) but the author does maintain it and has a mailing list (not too active) for news. VMIPS is written in C++ and is extensible since the object-oriented way in which it is written makes it easy to understand and modify. The VMIPS documentation is well-written. Developing new devices for VMIPS is straightforward. The VMIPS homepage is located at .

Virtutech Simics

is a commercial product (free for academic use) designed to emulate systems such as Alpha, AMD64, ARM, EM64T, IA-64, MIPS, PowerPC, SPARC-V8 and V9, and x86 CPUs. For MIPS architectute Simics emulates with 4K or 5K CPU.

SandUPSim

was developed by of the Chinese Academy of Sciences and is derived of VMIPS. Like VMIPS it simulates a R3000-based system. SandUPSim's homepage can is located at .

MPS

MPS is an emulator. English documentation is available only as a PostScript file. MPS is available at

YAMS

Yet Another MIPS Simulator, plus some hardware emulation to run NetBSD. YAMS is available at .

MAME/MESS

X-MAME and X-MESS no longer exist.

is a Multi Arcade Machine Emulator, a program that emulates the hardware (and low-level firmware) of a massive variety of arcade machines. MESS is a Multi Emulator Super System, an emulator for the hardware of many different games consules (e.g. Sega, NES, SNES, etc.)

The official site of the MAME development team : http://www.mamedev.com/ . There is a port to the X/Unix: .

Among others MAME emultates a MIPS , /IV and Sony PSX CPUs. Emulated systems includes Atari/Midway Phoenix//Flagstaff consoles (which based on the R4700/R5000 and Galileo ), Sony consoles and SGI and Indigo.

MISSE

MISSE, the MIPS Instruction Set Simulator Environment is available from .

Cisco 7200 Simulator

is an emulator of a 7200, 3600 and 3700 routers. The software emulates a R4600 CPU and some of the peripherals of the Cisco routers (, DEC Tulip 21140, DEC 21050, ...). This emulator is actively maintained. There is a good deal of emphasis on emulating network devices, as you might expect with a Cisco emulator. The Cisco 7200 Simulator homepage is located at .

QEMU

has its .

VirtualMIPS

is an emulator of MIPS SoC's and systems, currently only supporting the Jz4740.

See also