{"id":29027485,"url":"https://github.com/devl/caveat","last_synced_at":"2025-06-26T06:05:43.879Z","repository":{"id":34937600,"uuid":"39009696","full_name":"DevL/CAVEAT","owner":"DevL","description":"Completely Asinine Virtual Executing Assembly Thingy","archived":false,"fork":false,"pushed_at":"2015-07-19T17:19:18.000Z","size":120,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2023-03-24T12:20:51.748Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Elixir","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/DevL.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE.txt","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2015-07-13T12:06:02.000Z","updated_at":"2015-07-13T12:06:11.000Z","dependencies_parsed_at":"2022-09-01T06:01:17.047Z","dependency_job_id":null,"html_url":"https://github.com/DevL/CAVEAT","commit_stats":null,"previous_names":[],"tags_count":null,"template":null,"template_full_name":null,"purl":"pkg:github/DevL/CAVEAT","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/DevL%2FCAVEAT","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/DevL%2FCAVEAT/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/DevL%2FCAVEAT/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/DevL%2FCAVEAT/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/DevL","download_url":"https://codeload.github.com/DevL/CAVEAT/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/DevL%2FCAVEAT/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":262010859,"owners_count":23244415,"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":[],"created_at":"2025-06-26T06:05:43.269Z","updated_at":"2025-06-26T06:05:43.863Z","avatar_url":"https://github.com/DevL.png","language":"Elixir","funding_links":[],"categories":[],"sub_categories":[],"readme":"# CAVEAT\n\n## Machine concepts\n\n* Central Unit\n  * Decodes and dispatches instructions\n* Registers\n  * 16 32-bit general purpose registers\n  * Separate program counter? 32-bit special register\n* Load/Store architecture\n* Instruction set\n  * RISC\n  * Fixed instruction length: 32-bit\n  * Instructions can be handled by separate nodes\n  * Instructions can be overloaded\n  * Instruction format: 8-bit opcode, 24-bit operand segment interpreted by the instruction\n    * immediate value, e.g. memory address\n    * 2 registers (4-bit + 4-bit) + immediate value (16-bit)\n    * etc\n  * Default instruction set includes 16 load and 16 store instructions where the source/target\n    register is implicitly encoded in the opcode itself. This leaves 224 other instructions.\n* Memory Management Unit\n  * Maps a 24-bit address space to \"chips\" and \"controllers\"\n  * An address can be mapped to multiple \"chips\"\n  * Writing to an unmapped address is a no-op\n  * Reading from an unnamed address returns 0\n  * Writing to a multi-mapped address writes to all mapped chips at that address\n  * Reading from a multi-mapped address ORs the return value from all mapped chips\n\n### Chips / Controllers\n\n* Memory chip (stores and retrieves a value)\n* \"Video\" chip - output graphics\n* \"Keyboard\" chip - returns input\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdevl%2Fcaveat","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdevl%2Fcaveat","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdevl%2Fcaveat/lists"}