{"id":18415626,"url":"https://github.com/obijuan/z80-fpga","last_synced_at":"2025-04-07T12:31:45.078Z","repository":{"id":145165956,"uuid":"203238589","full_name":"Obijuan/Z80-FPGA","owner":"Obijuan","description":"Z80 CPU for OpenFPGAs, with Icestudio","archived":false,"fork":false,"pushed_at":"2024-06-06T17:10:57.000Z","size":4671,"stargazers_count":77,"open_issues_count":3,"forks_count":18,"subscribers_count":7,"default_branch":"master","last_synced_at":"2025-03-22T17:44:20.789Z","etag":null,"topics":["fpga","fpga-soc","ice40","icestudio","z80"],"latest_commit_sha":null,"homepage":null,"language":"Assembly","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"gpl-3.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/Obijuan.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":"2019-08-19T19:40:26.000Z","updated_at":"2025-03-22T08:30:09.000Z","dependencies_parsed_at":"2024-11-06T03:54:47.875Z","dependency_job_id":"72cac1a1-46b1-4527-bf12-f9e0bc009d74","html_url":"https://github.com/Obijuan/Z80-FPGA","commit_stats":null,"previous_names":[],"tags_count":5,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Obijuan%2FZ80-FPGA","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Obijuan%2FZ80-FPGA/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Obijuan%2FZ80-FPGA/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Obijuan%2FZ80-FPGA/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/Obijuan","download_url":"https://codeload.github.com/Obijuan/Z80-FPGA/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":247653083,"owners_count":20973753,"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":["fpga","fpga-soc","ice40","icestudio","z80"],"created_at":"2024-11-06T03:54:37.276Z","updated_at":"2025-04-07T12:31:42.599Z","avatar_url":"https://github.com/Obijuan.png","language":"Assembly","funding_links":[],"categories":[],"sub_categories":[],"readme":"![](https://github.com/Obijuan/Z80-FPGA/raw/master/wiki/project-logo.png)\n\n# Z80-FPGA\nZ80 CPU for OpenFPGAs, with Icestudio\n\n* Based on the [iceZ0mb1e project](https://github.com/abnoname/iceZ0mb1e) by abnoname and the [TV80 CPU](https://opencores.org/project,tv80,overview)\n\n## Quick start\n\n* Open the **z80-soc-16KB-Boot.ice** file with Icestudio\n* Connect the Alhambra-II board (or compatible) and upload the design\n* After 1 min aprox. the LEDs will show the value 0xAA\n* Let's upload a program test: open a terminal\n* Move to the roms folder\n* Execute the following line:\n```\npython3 z80-loader.py 05-counter.bin\n```\n* After 2 seconds you will see a binary counter running on the LEDs\n\n* If you want to assemble that example, execute the following comands:\n\n```\nz80asm -o 05-counter.bin 05-counter.s\n```\n\n## UART and pushbutton\n\nThe **z80-soc-16KB-Boot-uart.ice** file adds the following:\n\n* TX/RX Uart mapped in ports 0x10 (Data) and 0x11 (Status). The Data port is for transmitting (out) and receiving (in)\n* Input port 0x00. The SW2 button can be read from the bit 0 of port 0x00\n\nHave a look at this examples for more details:\n* 08-button-seq.s\n* UART-*.s\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fobijuan%2Fz80-fpga","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fobijuan%2Fz80-fpga","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fobijuan%2Fz80-fpga/lists"}