{"id":22314227,"url":"https://github.com/omarazizi/echoos","last_synced_at":"2025-10-14T04:30:49.661Z","repository":{"id":224125545,"uuid":"762476931","full_name":"OmarAzizi/EchoOS","owner":"OmarAzizi","description":"Operating System and Kernel","archived":false,"fork":false,"pushed_at":"2024-03-24T12:53:43.000Z","size":50,"stargazers_count":4,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-06-06T18:52:19.414Z","etag":null,"topics":["32-bit","c","kernel","kernel-development","low-level-programming","operating-system","x86-assembly"],"latest_commit_sha":null,"homepage":"","language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/OmarAzizi.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2024-02-23T21:31:55.000Z","updated_at":"2024-08-28T00:58:37.000Z","dependencies_parsed_at":"2024-03-14T13:53:19.835Z","dependency_job_id":"53dfba7e-cf9f-45ff-bf7c-9114bebfb787","html_url":"https://github.com/OmarAzizi/EchoOS","commit_stats":null,"previous_names":["omarazizi/echoos"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/OmarAzizi/EchoOS","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/OmarAzizi%2FEchoOS","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/OmarAzizi%2FEchoOS/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/OmarAzizi%2FEchoOS/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/OmarAzizi%2FEchoOS/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/OmarAzizi","download_url":"https://codeload.github.com/OmarAzizi/EchoOS/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/OmarAzizi%2FEchoOS/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":279017942,"owners_count":26086213,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-10-14T02:00:06.444Z","response_time":60,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"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":["32-bit","c","kernel","kernel-development","low-level-programming","operating-system","x86-assembly"],"created_at":"2024-12-03T22:09:24.236Z","updated_at":"2025-10-14T04:30:49.332Z","avatar_url":"https://github.com/OmarAzizi.png","language":"C","readme":"# EchoOS\n![C](https://img.shields.io/badge/c-%2300599C.svg?style=for-the-badge\u0026logo=c\u0026logoColor=white)\n![Assembly Icon](https://img.shields.io/badge/x86-Assembly-green?style=for-the-badge\u0026logo=assembly)\n\nI'm trying to build my own Operating System and its kernel (Project still in progress). So far I implemented:\n- The bootloader\n- Global Descriptor Table (GDT), so I can switch to 32-bit Protected mode\n- Simple LBA driver to read from disk in protected mode (Because we can't use __INT 0x13__ from BIOS anymore)\n- VGA 16-color text mode \n- Interrupt Descriptor Table (IDT)\n- Simple memset function\n- Remapped Master \u0026 Slave PICs\n- Dynamic memory (.e.g heap memory \u0026 malloc like functions)\n- Memory paging\n\n## Testing Interrupts\nThis screenshot shows the output in qemu after I devided by zero in to trigger the interrupt 0 in IDT\n![image](https://github.com/OmarAzizi/EchoOS/assets/110500643/bea5a44c-fa8d-4538-b1b9-4dd36e24034c)\n\n\nThis screenshot shows the output after pressing a key on the keyboard (This is after remapping the PICs so the interrupt called here is 0x21)\n![image](https://github.com/OmarAzizi/EchoOS/assets/110500643/3a9eef5d-fb3b-4b94-80e2-99bf8f2ffa7c)\n\n## Clone \u0026 Run\nClone the repository\n```bash\ngit clone https://github.com/OmarAzizi/EchoOS.git \u0026\u0026 cd EchoOS\n```\n\nBuilding the source and running it\n```bash\n./build.sh \u0026\u0026 make run\n```\n\n### Note\nTo build the code successfully, you need to set up:\n1. [QEMU emulator](https://www.qemu.org/)\n2. [GCC Cross-Compiler](https://wiki.osdev.org/GCC_Cross-Compiler)\n3. A tree structure that looks like this (in the root of the project):\n```bash\n.\n├── bin\n├── build\n│   ├── disk\n│   ├── idt\n│   ├── io\n│   └── memory\n│       ├── heap\n│       └── paging\n\n```\n\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fomarazizi%2Fechoos","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fomarazizi%2Fechoos","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fomarazizi%2Fechoos/lists"}