https://github.com/NJU-ProjectN/nemu

NJU EMUlator, a full system x86/mips32/riscv32/riscv64 emulator for teaching
https://github.com/NJU-ProjectN/nemu

Last synced: 8 days ago
JSON representation

NJU EMUlator, a full system x86/mips32/riscv32/riscv64 emulator for teaching

• Host: GitHub
• URL: https://github.com/NJU-ProjectN/nemu
• Owner: NJU-ProjectN
• License: other
• Created: 2017-08-12T14:30:09.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2024-09-12T02:26:10.000Z (2 months ago)
• Last Synced: 2024-09-12T11:54:36.034Z (2 months ago)
• Language: C
• Homepage:
• Size: 395 KB
• Stars: 855
• Watchers: 17
• Forks: 184
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# NEMU

NEMU(NJU Emulator) is a simple but complete full-system emulator designed for teaching purpose.

Currently it supports x86, mips32, riscv32 and riscv64.

To build programs run above NEMU, refer to the [AM project](https://github.com/NJU-ProjectN/abstract-machine).

The main features of NEMU include

* a small monitor with a simple debugger

  * single step

  * register/memory examination

  * expression evaluation without the support of symbols

  * watch point

  * differential testing with reference design (e.g. QEMU)

  * snapshot

* CPU core with support of most common used instructions

  * x86

    * real mode is not supported

    * x87 floating point instructions are not supported

  * mips32

    * CP1 floating point instructions are not supported

  * riscv32

    * only RV32IM

  * riscv64

    * only RV64IM

* memory

* paging

  * TLB is optional (but necessary for mips32)

  * protection is not supported

* interrupt and exception

  * protection is not supported

* 5 devices

  * serial, timer, keyboard, VGA, audio

  * most of them are simplified and unprogrammable

* 2 types of I/O

  * port-mapped I/O and memory-mapped I/O