mos6502 | A fast & simple MOS 6502 CPU emulator written in C++

by gianlucag C++ Version: Current License: MIT

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kandi X-RAY | mos6502 Summary

mos6502 is a C++ library typically used in Simulation applications. mos6502 has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

This is my C++ implementation of the MOS Technology 6502 CPU. The code is written to be more readable than fast, however some minor tricks have been introduced to greatly reduce the overall execution time.

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mos6502 has a low active ecosystem.

It has 203 star(s) with 47 fork(s). There are 11 watchers for this library.

It had no major release in the last 6 months.

There are 4 open issues and 2 have been closed. On average issues are closed in 26 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of mos6502 is current.

Quality

mos6502 has no bugs reported.

Security

mos6502 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

mos6502 is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

mos6502 releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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mos6502 Key Features

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mos6502 Examples and Code Snippets

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Community Discussions

Trending Discussions on mos6502

Why would someone bitwise AND an 8-bit value with a 16-bit mask in C?

QUESTION

Why would someone bitwise AND an 8-bit value with a 16-bit mask in C?

Asked 2020-Feb-09 at 22:26

I am trying to replicate Javidx9's NES/MOS6502 CPU code in C# as an academic exercise and I am having trouble understanding the logic behind the implementation of the Zero-Page Addressing Mode. Specifically, I am looking at this code:

...

ANSWER

Answered 2020-Feb-09 at 22:26

You're correct addr_abs &= 0x00ff isn't needed.

uint16_t x = n where n is an unsigned 8-bit number (which is the case here). x would have it's upper 8 bits cleared. As @tadman stated, there might have been a different method used previously to store the value into addr_abs which didn't clear the upper 8 bits.

Source https://stackoverflow.com/questions/59691075

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