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-IBM 4704 to USB keyboard converter
-==================================
-This firmware converts IBM 4704 keyboard protocol to USB HID.
-
-Keyboard initialization process takes a few seconds at start up. During that you will hear buzzer from the keyboard. **You need to plug USB cable after hooking up your keyboard to the converter.**
-
-
-Update
-------
-2015/09/07  Added keymap for Alps 102-key. Thanks, tai @ geekhack!
-2015/05/05  Added keymaps for 107-key, 77-key and 50-key. Thanks, orihalcon @ geekhack!
-2015/05/19  Fixed a protocol handling bug.
-
-
-
-Supported Keyboard
-------------------
-### IBM capacitive switch models:
-- 6019273 Model 100 50-key (grid layout)      http://kishy.ca/?p=894
-- 6019284 Model 200 62-key Alpha(60% layout)  http://kishy.ca/?p=894
-- 6019303 Model 300 77-key Expanded Alpha     http://deskthority.net/photos-f62/ibm-6019303-t8502.html
-- 6020218 Model 400 107-key Full key          http://kishy.ca/?p=894
-
-### Alps switch(vintage Green) models:
-
-- 5954339 Japanese 102-key    http://deskthority.net/post87127.html#p87127
-- 6112883 Japanese 102-key    http://geekhack.org/index.php?topic=52888.msg1194489#msg1194489
-- 6112884 Japanese 102-key    http://geekhack.org/index.php?topic=50437.msg1193047#msg1193047
-- 6341739 Chinese 102-key     http://geekhack.org/index.php?topic=52888.msg1176566#msg1176566
-
-
-Connector
----------
-Keyboard Plug from front:
-
-    DSUB-9
-    -------------
-    \ N 2 3 4 5 /
-     \ N N N N /
-      ---------
-    2   GND
-    3   VCC 5V
-    4   DATA
-    5   CLOCK
-    N   No connection/No pin.
-
-
-Connection
-----------
-In case of using ATMega32U4(Teensy2.0):
-
-1. Supply power with VCC and GND.
-2. Connect CLOCK to PD1 and DATA to PD0. You can change pin with config.h.
-3. Optionally you may need pull-up register. 1KOhm probably work.
-
-
-Build Firmware
---------------
-Just run `make`:
-
-    $ make
-
-To select keymap:
-
-    $ make KEYMAP=[plain|...]
-
-
-Keymap
-------
-Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create file named `keymap_<name>.c` and see keymap document(you can find in top README.md) and existent keymap files.
-
-Use `KEYMAP_ALPS102()` to define your keymap for Alps models.