converter/ibm4704_usb/README.md

   1 IBM 4704 to USB keyboard converter
   2 ==================================
   3 This firmware converts IBM 4704 keyboard protocol to USB HID.
   4
   5 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.**
   6
   7
   8 Supported Keyboard
   9 ------------------
  10 ### IBM capacitive switch models:
  11 - 6019273 Model 100 50-key (grid layout)      http://kishy.dyndns.org/?p=977
  12 - 6019284 Model 200 62-key Alpha(60% layout)  http://kishy.dyndns.org/?p=894
  13 - 6019303 Model 300 77-key Expanded Alpha     http://kbtalking.cool3c.com/article/23272
  14 - 6020218 Model 400 107-key Full key          http://kishy.dyndns.org/?p=980
  15
  16 ### Alps switch(vintage Green) models:
  17
  18 - 5954339 Japanese 102-key    http://deskthority.net/post87127.html#p87127
  19 - 6112883 Japanese 102-key    http://geekhack.org/index.php?topic=52888.msg1194489#msg1194489
  20 - 6112884 Japanese 102-key    http://geekhack.org/index.php?topic=50437.msg1193047#msg1193047
  21 - 6341739 Chinese 102-key     http://geekhack.org/index.php?topic=52888.msg1176566#msg1176566
  22
  23
  24 Connector
  25 ---------
  26 Keyboard Plug from front:
  27
  28     DSUB-9
  29     -------------
  30     \ N 2 3 4 5 /
  31      \ N N N N /
  32       ---------
  33     2   GND
  34     3   VCC 5V
  35     4   DATA
  36     5   CLOCK
  37     N   No connection/No pin.
  38
  39
  40 Connection
  41 ----------
  42 In case of using ATMega32U4(Teensy2.0):
  43
  44 1. Supply power with VCC and GND.
  45 2. Connect CLOCK to PD1 and DATA to PD0. You can change pin with config.h.
  46 3. Optionally you may need pull-up register. 1KOhm probably work.
  47
  48
  49 Build Firmware
  50 --------------
  51 Just run `make`:
  52
  53     $ make
  54
  55 To select keymap:
  56
  57     $ make KEYMAP=[plain|...]
  58
  59
  60 Keymap
  61 ------
  62 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.