{"id":16980230,"url":"https://github.com/danirod/jacqueline","last_synced_at":"2025-06-21T21:38:07.241Z","repository":{"id":69427416,"uuid":"230147275","full_name":"danirod/jacqueline","owner":"danirod","description":"An experimental i386 kernel written in Pascal","archived":false,"fork":false,"pushed_at":"2019-12-27T13:08:51.000Z","size":6,"stargazers_count":4,"open_issues_count":0,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-03-21T23:14:14.726Z","etag":null,"topics":["assembly","elf","i386","i386-elf","kernel","osdev","pascal","x86","x86-kernel"],"latest_commit_sha":null,"homepage":null,"language":"Pascal","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/danirod.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}},"created_at":"2019-12-25T19:53:19.000Z","updated_at":"2022-04-12T18:43:32.000Z","dependencies_parsed_at":null,"dependency_job_id":"5156ab47-0a68-47dc-958a-e6a799b61fd8","html_url":"https://github.com/danirod/jacqueline","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/danirod/jacqueline","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/danirod%2Fjacqueline","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/danirod%2Fjacqueline/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/danirod%2Fjacqueline/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/danirod%2Fjacqueline/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/danirod","download_url":"https://codeload.github.com/danirod/jacqueline/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/danirod%2Fjacqueline/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":261199951,"owners_count":23123914,"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","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","elf","i386","i386-elf","kernel","osdev","pascal","x86","x86-kernel"],"created_at":"2024-10-14T01:50:27.701Z","updated_at":"2025-06-21T21:38:02.231Z","avatar_url":"https://github.com/danirod.png","language":"Pascal","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Jacqueline\n\nJacqueline is an experimental bootloader written in Pascal (Free Pascal dialect)\nwritten for the i386 architecture, **just because**. Note that, unlike\n[NativeOS][1], I have no plans to further develop Jacqueline once the system\n_compiles_ and I'm able to start the image using an emulator.\n\n## Why Pascal?\n\nEven while Pascal wasn't written with low-level programming in mind, it is\nnonetheless possible to do low-level systems programming with the Free Pascal\ndialect, as it supports features that are present in other low-level languages\nsuch as C, C++ or even Rust in unsafe mode, such as:\n\n* Pointers, using the `^` operator (such as `var intptr: ^integer`).\n* Memory addresses, using the `@` operator (let `var foo: integer`, then\n  `@foo` yields the memory address of `foo` as an `^integer`.\n* Inline assembly interfacing, through the `asm` keyword, à la C. In fact,\n  I find more intuitive to move data between registers and variables in\n  Free Pascal than in GNU C.\n\nFree Pascal is able to generate standard object files (*.o), encoded in popular\nexecutable file formats such as PE and ELF, and thus, it is possible to make\nobject files written originally in diverse languages such as C, Pascal or\nAssembly to interface each other.\n\n## Setting up\n\n### Requirements\n\n* An i386-elf toolchain (required for compiling the Assembly code and linking\n  the final kernel image).\n* A Free Pascal distribution with 32 bit support (i.e., ppc386 is provided).\n* BSD make or GNU make.\n* QEMU to run the kernel.\n\n### How to\n\n`make qemu`\n\n\n[1]: https://github.com/danirod/nativeos\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdanirod%2Fjacqueline","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdanirod%2Fjacqueline","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdanirod%2Fjacqueline/lists"}