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XT to USB keyboard converter
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This is a port of TMK's converter/xt_usb to QMK.
This firmware converts XT keyboard protocol to USB.(It supports Scan Code Set 1.)
Connect Wires
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1. Connect **Vcc** and **GND**.
2. Connect **Clock** and **Data** line. **Clock** is on `PD1`, **Data** on `PD0` by default. And optionally you can use `PB7` for **Reset**.(Compatible to Soarer's converter) To change pin configuration edit `config.h`.
3. You need pull-up resistor. **1K-10K Ohm** will be OK.
XT keyboard protocol resource
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https://github.com/tmk/tmk_keyboard/wiki/IBM-PC-XT-Keyboard-Protocol
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