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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.**
-
-
- Keyboard models
- ---------------
- IBM capacitive switch models:
- 6019273 Model 100 50-key (grid layout) http://kishy.dyndns.org/?p=977
- 6019284 Model 200 62-key Alpha(60% layout) http://kishy.dyndns.org/?p=894
- 6019303 Model 300 77-key Expanded Alpha http://kbtalking.cool3c.com/article/23272
- 6020218 Model 400 107-key Full key http://kishy.dyndns.org/?p=980
-
- 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.
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