{"id":18749681,"url":"https://github.com/coditva/jazz","last_synced_at":"2026-03-16T01:43:32.836Z","repository":{"id":51129057,"uuid":"86101327","full_name":"coditva/Jazz","owner":"coditva","description":"Let's write an OS!","archived":false,"fork":false,"pushed_at":"2021-05-22T07:21:29.000Z","size":321,"stargazers_count":6,"open_issues_count":10,"forks_count":4,"subscribers_count":3,"default_branch":"master","last_synced_at":"2025-04-12T23:43:41.355Z","etag":null,"topics":["assembly","c","kernel","nasm","operating-system","os","qemu"],"latest_commit_sha":null,"homepage":"https://coditva.github.io/Jazz/","language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/coditva.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2017-03-24T18:56:11.000Z","updated_at":"2022-02-13T08:51:09.000Z","dependencies_parsed_at":"2022-09-13T17:14:30.383Z","dependency_job_id":null,"html_url":"https://github.com/coditva/Jazz","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/coditva/Jazz","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/coditva%2FJazz","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/coditva%2FJazz/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/coditva%2FJazz/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/coditva%2FJazz/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/coditva","download_url":"https://codeload.github.com/coditva/Jazz/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/coditva%2FJazz/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":30558318,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-03-15T23:30:23.986Z","status":"ssl_error","status_checked_at":"2026-03-15T23:28:43.564Z","response_time":61,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["assembly","c","kernel","nasm","operating-system","os","qemu"],"created_at":"2024-11-07T17:08:22.444Z","updated_at":"2026-03-16T01:43:32.821Z","avatar_url":"https://github.com/coditva.png","language":"C","readme":"[![Build](https://github.com/coditva/Jazz/actions/workflows/build.yml/badge.svg)](https://github.com/coditva/Jazz/actions/workflows/build.yml)\n[![CodeFactor](https://www.codefactor.io/repository/github/coditva/jazz/badge)](https://www.codefactor.io/repository/github/coditva/jazz)\n\n# Jazz\n_A small hobby OS_\n\n## About the project\n**Jazz** is an Operating System that I have decided to write from scratch to\nunderstand an OS.\n\n## Design Goals\nThe design goal of this project is to make a very light operating system with\nminimal microkernel. A light microkernel means an easy to maintain OS where\neach module is easy to test and update. This is also in line with the principle\nof separation of mechanism and policy.\n\n## Development\n### Build\n```bash\nmake deps       # to build cross-compiler\nmake kernel     # to build kernel\nmake all        # to build everything\n```\n\nMost of the work is in kernel itself and the standalone kernel can be built\nfrom inside the `kernel/` directory.\n```bash\ncd kernel/\nmake            # build the kernel\nmake qemu       # run the kernel on qemu\nmake gdb        # run a gdb session with qemu\n```\n\n### Troubleshooting\n**Building dependencies fails with error: `make -j 8 g++: internal compiler\nerror: Killed (program cc1plus)`**\nThis might be because you ran out of memory due to `make` running build in\nparallel. Try to change the option `-j 8` to `-j 2` and build again.\n\n### Debug\nAside from `qemu` and `gdb`, there is extensive logging on the serial port\nwhich can be accessed at `/tmp/jazz_serial1.log` file when `qemu` is started\nfrom the makefile as `make qemu`.\n\n## Todo\nThe todo/plan can be found\n[here](https://github.com/coditva/Jazz/blob/master/TODO).\n\n## License\n[MIT](https://github.com/coditva/Jazz/blob/master/LICENSE)\n\u0026copy; 2018-present [Utkarsh Maheshwari](https://github.com/coditva)\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcoditva%2Fjazz","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcoditva%2Fjazz","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcoditva%2Fjazz/lists"}