vrEmuTms9918
Unicorn Engine
| vrEmuTms9918 | Unicorn Engine | |
|---|---|---|
| 3 | 15 | |
| 39 | 7,168 | |
| - | 1.3% | |
| 7.1 | 1.0 | |
| 6 months ago | 5 days ago | |
| C | C | |
| MIT License | GNU General Public License v3.0 only |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
vrEmuTms9918
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HBC-56 Emulator Online - Multiple ROMs now available
TMS9918A Library: https://github.com/visrealm/vrEmuTms9918
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Try the 6502 Breakout clone in your browser (requires keyboard)
I did, except for the AY-3-8910 audio emulation (which doesn't work in web, but does work on desktop). But, the rest (65C02, TMS9918A, UART, debugger, UI, glue, web port, etc.) is all from scratch.
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Started work on an emulator for my 6502 + TMS9918
I've separated out the TMS9918 emulator (written in C) to a separate repo if anyone is interested: https://github.com/visrealm/vrEmuTms9918 . It should support Graphics I, Graphics II and Text modes. Including full sprite support. Mostly untested at this point.
Unicorn Engine
- Unicorn – lightweight multi-platform, multi-architecture CPU emulator framework
- Unicorn: Lightweight multi-platform, multi-architecture CPU emulator framework
- 86Box v4.0
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Show HN: Tetris, but the blocks are ARM instructions that execute in the browser
OFRAK Tetris is a project I started at work about two weeks ago. It's a web-based game that works on desktop and mobile. I made it for my company to bring to events like DEF CON, and to promote our binary analysis and patching framework called OFRAK.
In the game, 32-bit, little-endian ARM assembly instructions fall, and you can modify the operands before executing them on a CPU emulator. There are two segments mapped – one for instructions, and one for data (though both have read, write, and execute permissions). Your score is a four byte signed integer stored at the virtual address pointed to by the R12 register, and the goal is to use the instructions that fall to make the score value in memory as high as possible. When it's game over, you can download your game as an ELF to relive the glory in GDB on your favorite ARM device.
The CPU emulator is a version of Unicorn (https://www.unicorn-engine.org/) that has been cross-compiled to WebAssembly (https://alexaltea.github.io/unicorn.js/), so everything on the page runs in the browser without the need for any complicated infrastructure on the back end.
Since I've only been working on this for a short period of time leading up to its debut at DEF CON, there are still many more features I'd eventually like to implement. These include adding support for other ISAs besides ARM, adding an instruction reference manual, and lots of little cleanups, bug fixes, and adjustments.
My highest score is 509,644,979, but my average is about 131,378.
I look forward to feedback, bug reports, feature requests, and strategy discussions!
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It Takes 6 Days to Change 1 Line of Code
Entails hundreds of hours of single-stepping through that opcode in Linux kernel using an indirect operand pointing toward its own opcode (self-modifying code).
Even the extraordinaire Fabrice Bellard (author of QEMU) admitted that it is broke and did a total rewrite, which fixed tons of other issues.
https://github.com/unicorn-engine/unicorn/issues/364
- FOSS Simulator for debugging C code (even better if it supports some MCUs)
- Unicorn: Lightweight multi-platform, multi-architecture CPU emulation framework
- Unicorn - CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, PowerPC, RiscV, S390x, TriCore, X86)
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Vita3K android running Tales of Hearts R - A Glimpse of What's to come
Macdu (Vita3K dev) also stated that this game is CPU bound so they used a CPU emulator known as unicorn2 , this is also the reason for the slow speed
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QEMU Version 7.0.0 Released
This is how I found out a snippet of assembly code that can actually distinguished between a KVM hypervisor and most of today’s emulator.
https://github.com/unicorn-engine/unicorn/issues/364
What are some alternatives?
hbc-56 - Homebrew 6502 on a backplane computer
QEMU - Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.
vrEmu6502 - 6502/65C02 emulator library (C99)
MicroPython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems
GubOS - A simple OS based on c language
capstone - Capstone disassembly/disassembler framework: Core (Arm, Arm64, BPF, EVM, M68K, M680X, MOS65xx, Mips, PPC, RISCV, Sparc, SystemZ, TMS320C64x, Web Assembly, X86, X86_64, XCore) + bindings. [Moved to: https://github.com/capstone-engine/capstone]
TMS9918A - TMS9918A video card for RC2014
Reverse-Engineering-Tutorial - A FREE comprehensive reverse engineering tutorial covering x86, x64, 32-bit ARM & 64-bit ARM architectures.
ish - Linux shell for iOS
TinyVM - TinyVM is a small, fast, lightweight virtual machine written in pure ANSI C.
OkamiStation - A Fantasy Computer inspired by 80s workstations.
box86 - Box86 - Linux Userspace x86 Emulator with a twist, targeted at ARM Linux devices