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‎.devcontainer/Dockerfile

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FROM wokwi/builder-clang-wasm
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USER root
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RUN apk add gcompat libc6-compat
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# Install arduino-cli:
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RUN wget -O /tmp/cli.tar.gz \
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https://downloads.arduino.cc/arduino-cli/arduino-cli_latest_Linux_64bit.tar.gz && \
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tar -C /usr/local/bin -zxvf /tmp/cli.tar.gz && \
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rm /tmp/cli.tar.gz
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RUN arduino-cli core update-index && arduino-cli core install arduino:avr

‎.devcontainer/devcontainer.json

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{
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"name": "Wokwi-chips clang ",
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"dockerFile": "Dockerfile",
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"customizations": {
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"vscode": {
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"extensions": [
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"Wokwi.wokwi-vscode",
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"ms-vscode.makefile-tools"
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]
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}
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}
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}

‎.github/workflows/build.yaml

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name: Build Chip
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on:
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push:
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workflow_dispatch:
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jobs:
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build:
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name: Build
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runs-on: ubuntu-22.04
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steps:
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- name: Check out repository
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uses: actions/checkout@v4
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- name: Build chip
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uses: wokwi/wokwi-chip-clang-action@main
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with:
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sources: "src/main.c"
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- name: Copy chip.json
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run: sudo cp chip.json dist
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- name: 'Upload Artifacts'
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uses: actions/upload-artifact@v3
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with:
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name: chip
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path: |
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dist/chip.json
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dist/chip.wasm
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release:
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name: Release
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needs: build
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if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
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runs-on: ubuntu-latest
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steps:
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- name: Download compiled chip
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uses: actions/download-artifact@v3
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with:
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name: chip
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path: chip
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- name: Create a zip archive
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run: cd chip && zip -9 ../chip.zip chip.*
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env:
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ZIP_VERSION: ${{ github.ref_name }}
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- name: Upload release
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uses: ncipollo/release-action@v1
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with:
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artifacts: chip.zip
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token: ${{ secrets.GITHUB_TOKEN }}
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generateReleaseNotes: true

‎.gitignore

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dist

‎.vscode/extensions.json

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{
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"recommendations": [
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"wokwi.wokwi-vscode"
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]
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}

‎.vscode/settings.json

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{
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"makefile.launchConfigurations": [
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{
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"cwd": "/workspaces/cd74act00/dist",
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"binaryPath": "/workspaces/cd74act00/dist/chip.wasm",
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"binaryArgs": []
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}
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]
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}

‎LICENSE

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MIT License
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The MIT License (MIT)
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Copyright (c) 2024 wokwi-custom-chips
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Copyright (c) 2022 Uri Shaked
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.

‎Makefile

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# SPDX-FileCopyrightText: © 2022 Uri Shaked <uri@wokwi.com>
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# SPDX-License-Identifier: MIT
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SOURCES = src/main.c
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TARGET = dist/chip.wasm
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testFileName = logic
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.PHONY: all
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all: $(TARGET) dist/chip.json
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.PHONY: clean
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clean:
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rm -rf dist
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dist:
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mkdir -p dist
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$(TARGET): dist $(SOURCES) src/wokwi-api.h
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clang --target=wasm32-unknown-wasi --sysroot /opt/wasi-libc -nostartfiles -Wl,--import-memory -Wl,--export-table -Wl,--no-entry -Werror -o $(TARGET) $(SOURCES)
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dist/chip.json: dist chip.json
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cp chip.json dist
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.PHONY: test
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test:
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cd test && arduino-cli sketch new $(testFileName) && arduino-cli compile -e -b arduino:avr:uno $(testFileName)
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‎README.md

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# cd74act00
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# CD74ACT00
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## QUAD 2-INPUT POSITIVE-NAND GATES Custom Chip for Wokwi
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Custom chip that emulates the cd74act00 IC for [Wokwi](https://wokwi.com/).
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The actual source code for the chip lives in [src/main.c](src/main.c), and the pins are described in [chip.json](chip.json).
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## chip functionalities explained in DOCS
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[docs](docs/README.md)
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## Building
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The easiest way to build the project is to open it inside a Visual Studio Code dev container, and then run the `make` command.
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## Testing
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You can test this project using the [Wokwi extension for VS Code](https://marketplace.visualstudio.com/items?itemName=wokwi.wokwi-vscode). Open the project with Visual Studio Code, press "F1" and select "Wokwi: Start Simulator".
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If you want to make changes to the test project firmware, edit [test/logic/logic.ino](test/update/sketch.ino), and then run `make test` to rebuild the .hex file. You'll need the [arduino-cli](https://arduino.github.io/arduino-cli/latest/installation/), which is already installed in the dev container.
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## License
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This project is licensed under the MIT license. See the [LICENSE](LICENSE) file for more details.

‎cd74act00.zip

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‎chip.json

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{
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"version": 1,
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"license": "MIT",
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"docs": "https://github.com/wokwi/inverter-chip/blob/main/docs/README.md",
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"name": "cd74act00",
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"author": "Algovoid",
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"pins": [
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"1A",
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"1B",
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"1Y",
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"2A",
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"2B",
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"2Y",
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"GND",
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"3Y",
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"3A",
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"3B",
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"4Y",
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"4A",
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"4B",
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"VCC"
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],
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"controls" :[]
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}

‎diagram.json

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{
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"version": 1,
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"author": "Gojap",
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"editor": "wokwi",
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"parts": [
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{ "type": "chip-cd74act00", "id": "chip1", "top": -18.18, "left": 206.4, "attrs": {} },
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{
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"type": "wokwi-led",
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"id": "led1",
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"top": -99.6,
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"left": 90.2,
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"attrs": { "color": "blue" }
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},
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{
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"type": "wokwi-led",
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"id": "led2",
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"top": 34.8,
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"left": 90.2,
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"attrs": { "color": "yellow" }
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},
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{
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"type": "wokwi-dip-switch-8",
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"id": "sw1",
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"top": -32.5,
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"left": -56.1,
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"rotate": 90,
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"attrs": {}
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},
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{
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"type": "wokwi-led",
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"id": "led3",
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"top": 25.2,
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"left": 378.6,
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"attrs": { "color": "cyan", "flip": "1" }
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},
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{
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"type": "wokwi-led",
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"id": "led4",
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"top": -70.8,
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"left": 378.6,
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"attrs": { "color": "magenta", "flip": "1" }
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},
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{ "type": "wokwi-vcc", "id": "vcc2", "top": -162.44, "left": 153.6, "attrs": {} },
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{ "type": "wokwi-gnd", "id": "gnd1", "top": 134.4, "left": 201, "attrs": {} }
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],
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"connections": [
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[ "led2:A", "chip1:2Y", "green", [ "v0", "h76.8", "v-38.4" ] ],
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[ "led1:A", "chip1:1Y", "green", [ "v0", "h67.2", "v67.2" ] ],
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[ "sw1:1b", "chip1:1A", "green", [ "h0" ] ],
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[ "chip1:1B", "sw1:2b", "green", [ "h-19.2", "v-28.8" ] ],
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[ "sw1:1a", "sw1:2a", "red", [ "h-38.4", "v9.6" ] ],
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[ "sw1:2a", "sw1:3a", "red", [ "h-38.4", "v9.6" ] ],
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[ "sw1:4a", "sw1:3a", "red", [ "h-38.4", "v-9.6" ] ],
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[ "sw1:5a", "sw1:4a", "red", [ "h-38.4", "v-9.6" ] ],
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[ "sw1:8a", "sw1:7a", "red", [ "h-38.4", "v-9.6" ] ],
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[ "sw1:6a", "sw1:5a", "red", [ "h-38.4", "v-9.6" ] ],
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[ "sw1:7a", "sw1:6a", "red", [ "h-38.4", "v-9.6" ] ],
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[ "chip1:GND", "led2:C", "black", [ "h0", "v48", "h-105.6" ] ],
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[ "sw1:3b", "chip1:2A", "green", [ "h162.9", "v38.4" ] ],
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[ "chip1:2B", "sw1:4b", "green", [ "h-48", "v-38.4" ] ],
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[ "chip1:3A", "sw1:5b", "green", [ "h21.01", "v28.8", "h-182.4", "v-67.2" ] ],
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[ "sw1:6b", "chip1:3B", "green", [ "h134.1", "v57.6", "h201.6", "v-38.4" ] ],
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[ "sw1:7b", "chip1:4A", "green", [ "h124.5", "v67.2", "h230.4", "v-76.8" ] ],
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[ "sw1:8b", "chip1:4B", "green", [ "v0", "h124.5", "v57.6", "h240", "v-86.4" ] ],
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[ "chip1:4Y", "led4:A", "green", [ "h78.61" ] ],
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[ "chip1:3Y", "led3:A", "green", [ "v28.8", "h78.61" ] ],
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[ "led2:C", "led1:C", "green", [ "v0", "h-18.8", "v-134.4" ] ],
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[ "led4:C", "led3:C", "green", [ "v0", "h18.8", "v96" ] ],
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[ "led3:C", "led2:C", "green", [ "v38.4", "h-192.4" ] ],
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[ "vcc2:VCC", "chip1:VCC", "red", [ "v0", "h144" ] ],
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[ "vcc2:VCC", "sw1:1a", "red", [ "v0", "h-201.6" ] ],
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[ "gnd1:GND", "chip1:GND", "black", [ "v0" ] ]
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],
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"dependencies": {}
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}

‎docs/README.md

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# Wokwi CD74ACT00 Chip
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This is a custom chip for [Wokwi](https://wokwi.com/). It implements the CD74ACT00 IC.
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## Description
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The ‘ACT00 devices contain four independent 2-input NAND gates. Each gate performs the Boolean function
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of Y = NOT(A . B) or Y = NOT(A) + NOT(B) in positive logic.
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## Truth Table
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| INPUTS | OUTPUT |
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| ------ | ------- |
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| A | B | Y |
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| ---------- | ------- |
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| H | H | L |
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| L | X | H |
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| X | L | H |
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## Pin names
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| Name | Description |
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| ---- | ------------------------ |
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| 1A | Gate 1 Input signal A |
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| 1B | Gate 1 Input signal B |
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| 2Y | Gate 1 Output signal |
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| 2A | Gate 2 Input signal A |
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| 2B | Gate 2 Input signal B |
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| 2Y | Gate 2 Output signal |
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| 3A | Gate 3 Input signal A |
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| 3B | Gate 3 Input signal B |
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| 3Y | Gate 3 Output signal |
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| 4A | Gate 3 Input signal A |
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| 4B | Gate 4 Input signal B |
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| 4Y | Gate 4 Output signal |
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| GND | Ground |
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| VCC | Supply voltage |
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## Usage
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To use this chip in your project, include it as a dependency in your `diagram.json` file:
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```json
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"dependencies": {
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"chip-cd74act00": "github:wokwi/cd74act00@0.1.0"
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}
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```
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Then, add the chip to your circuit by adding a `chip-cd74act00` item to the `parts` section of diagram.json:
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```json
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"parts": {
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...,
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{ "type": "chip-cd74act00", "id": "chip1" }
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},
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```
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For a complete example, see [the inverter chip test project](https://wokwi.com/projects/398879430719023105).

‎sn74ahct1g32.zip

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