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qmk_firmware/keyboards/converter/xt_usb/README.md

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Keyboard: Port of TMK XT USB Converter (#3619) * Converter: add XT USB converter from TMK * Converter: port TMK code for USB converter to QMK * Apply requested changes after code review by @drashna - use "pragma once" instead of include guards - use LAYOUT instead of KEYMAP - allow customisation with matrix_init_user() and matrix_scan_user() - set BOOTLOADER instead of BOOTLOADER_SIZE - Add XT_ENABLE to OPT_DEFS * Remove unnecessary lines
5 years ago
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  1. XT to USB keyboard converter
  2. ==============================
  3. This is a port of TMK's converter/xt_usb to QMK.
  4. 

  5. This firmware converts XT keyboard protocol to USB.(It supports Scan Code Set 1.)
  6. 

  7. 

  8. Connect Wires
  9. -------------
  10. 1. Connect **Vcc** and **GND**.
  11. 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`.
  12. 3. You need pull-up resistor. **1K-10K Ohm** will be OK.
  13. 

  14. 

  15. XT keyboard protocol  resource
  16. ------------------------------
  17. https://github.com/tmk/tmk_keyboard/wiki/IBM-PC-XT-Keyboard-Protocol