{"id":21966926,"url":"https://github.com/laci1953/rtm-z80","last_synced_at":"2025-04-05T21:08:03.879Z","repository":{"id":47327717,"uuid":"393986399","full_name":"Laci1953/RTM-Z80","owner":"Laci1953","description":"Retro Tiny Multitasking system for Z80 based computers","archived":false,"fork":false,"pushed_at":"2025-02-01T06:48:49.000Z","size":39888,"stargazers_count":129,"open_issues_count":0,"forks_count":10,"subscribers_count":10,"default_branch":"main","last_synced_at":"2025-03-29T20:08:52.610Z","etag":null,"topics":["assembly","multitasking","rc2014"],"latest_commit_sha":null,"homepage":"","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/Laci1953.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,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2021-08-08T14:42:07.000Z","updated_at":"2025-03-17T08:33:01.000Z","dependencies_parsed_at":"2025-02-01T07:24:00.912Z","dependency_job_id":"66a2c29c-146e-47fe-b8af-17c84db5ad01","html_url":"https://github.com/Laci1953/RTM-Z80","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Laci1953%2FRTM-Z80","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Laci1953%2FRTM-Z80/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Laci1953%2FRTM-Z80/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Laci1953%2FRTM-Z80/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/Laci1953","download_url":"https://codeload.github.com/Laci1953/RTM-Z80/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":247399877,"owners_count":20932876,"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","multitasking","rc2014"],"created_at":"2024-11-29T13:19:13.088Z","updated_at":"2025-04-05T21:08:03.853Z","avatar_url":"https://github.com/Laci1953.png","language":"C","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Retro Tiny Multitasking kernel for Z80 - RTM/Z80\n\n(last update on 28 Oct 2023)\n\nRTM/Z80 is a multitasking kernel, built for Z80 based computers, written in Z80 assembly language, providing its users with an Application Programming Interface (API) accessible from programs written in the C language and the Z80 assembly language.\n\nIt is intended to be a simple and easy to use learning tool, for those who want to understand the tips and tricks of the multitasking software systems.\n\nCurrent version is 2.6 \n\nRTM/Z80 can be used on the following environments:\n\n• Z80SIM Z80 simulator (e.g. on Windows, under CygWin)\n\n• Z80ALL standalone homebrew Z80 computer (25MHz Z80, 4 x 32KB RAM, KIO, VGA, PS/2, DS1302)\n\n• RC2014 homebrew Z80 computer, using the following hardware configuration options:\n\n  o SC108(Z80 + 2x64KB RAM) + SC110(CTC+SIO) , or\n  \n  o SC114(Z80 + 2x64KB RAM) + SC110(CTC+SIO), or\n  \n  o any Z80 board + 64/128KB RAM + SC110(CTC+SIO) , or\n  \n  o any Z80 board + 512KB RAM+512KB ROM Memory Module + SC110(CTC+SIO)\n\n• RCBUS based homebrew Z80 computer, using the following hardware configuration options:\n\n  o SC706(Z80) + (SC707 / SC714 RAM) + ( SC716(SIO) + SC718(CTC) ) / SC725(CTC+SIO) \n\n• any CPU Z80 board supporting IM2 + any 64KB RAM board + any CTC board + any SIO ( or KIO board ) (in this case, the I/O ports must be set in the source code, see manual, chapter Porting RTM/Z80 to other hardware)\n\nThe mandatory hardware requirements: 64KB RAM, support of Z80 Interrupt Mode 2, CTC, SIO or KIO.   \n\nNew in v2.4 : improved communications I/O support\n\nsee DEMO folder for getxfile, putxfile (XMODEM compatible)\n\nNew in v2.5 : KIO support added\n\nNew in v2.6 : Z80ALL version added, \n\nVGA display support added for Z80ALL, \n\nVGA System status display added for Z80ALL, \n\nPS/2 keyboard support added for Z80ALL, \n\nextra 2x32KB RAM support added for Z80ALL,\n\nreal time clock DS1302 support added for Z80ALL\n\n# Games executed under RTM/Z80 \n\nRTMDEMO - 2 concurrent games (DEMO folder)\n\nBIRDS - the 'birds, eagle \u0026 kite' game (DEMO folder)\n\n# System status display\n\n ( only for Z80ALL version )\n\n(running)\n![running](https://github.com/Laci1953/RTM-Z80/assets/87603175/7e8091fa-14ae-4b71-8cef-8817297eeeb6)\n\n(after shutdown)\n![after shutdown](https://github.com/Laci1953/RTM-Z80/assets/87603175/38a87e94-a176-43e1-b21b-9fbceba6ebad)\n\nFor Z80ALL, the \"RTM/Z80 system status\", displayed in real time during the execution of a multitasking application, is very useful for:\n\n- assessing the dynamic memory load ( is it dangerously close to the maximum capacity? )\n- viewing the task execution dynamics ( the tasks active \u003c---\u003e waiting switching )\n- learning about the system load ( how long, in %, stays the system idle - is the % dangerously low  ? )\n- learning about the tasks stack size ( is the remaining space in stack dangerously low ? )\n\nUsing the real-time VGA system status display, a multitasking application can be fine-tuned, in an efficient way.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flaci1953%2Frtm-z80","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flaci1953%2Frtm-z80","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flaci1953%2Frtm-z80/lists"}