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M0110/M0110A to USB keyboard converter
======================================
This firmware converts the protocol of Apple Macintosh keyboard M0110/M0110A into USB.
Target board of this project is [PJRC Teensy](http://www.pjrc.com/teensy/), though,
you can use other board with USB AVR like `ATmega32U4` and `AT90USB`.
M0110A support was contributed by [skagon@github](https://github.com/skagon).
Connection
----------
You need 4P4C plug and cable to connect Teensy or other AVR dev board into the keyboard.
Teensy port `PF0` is assigned for `CLOCK` line and `PF1` for `DATA` by default,
you can change pin configuration with editing *config.h*.
You can find 4P4C plugs on telephone handset cable. Note that it is *crossover* connection
while Macintosh keyboard cable is *straight*.
[](http://i.imgur.com/vJoVO.jpg)
In this pic:
1. `GND`(Black)
2. `CLOCK`(Red)
3. `DATA`(Green)
4. `+5V`(Yellow)
Not that wire colors may vary in your cable.
### Pinout
- <http://pinouts.ru/Inputs/MacKeyboard_pinout.shtml>
- <http://en.wikipedia.org/wiki/Modular_connector#4P4C>
### Pull-up Registor
You may need pull-up registors on signal lines(`CLOCK`, `DATA`) in particular
when you have long or coiled cable. 1k-10k Ohm will be OK for this purpose.
In some cases MCU can't read signal from keyboard correctly without pull-up resistors.
Building Frimware
-----------------
To compile firmware you need AVR GCC. You can use [WinAVR](http://winavr.sourceforge.net/) on Windows.
You can edit *Makefile* and *config.h* to change compile options and pin configuration.
$ git clone git://github.com/tmk/tmk_keyboard.git (or download source)
$ cd m0110_usb
$ make
and program your Teensy with [PJRC Teensy loader](http://www.pjrc.com/teensy/loader.html).
Keymap
------
You can change keymaps by editing *keymap.c*.
### M0110
#### *Default*
,---------------------------------------------------------.
| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs|
|---------------------------------------------------------|
|Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \|
|---------------------------------------------------------|
|Fn0 | A| S| D| F| G| H| J| K| L| ;| '|Return|
|---------------------------------------------------------|
|Shift | Z| X| C| V| B| N| M| ,| ,| /|Shift |
`---------------------------------------------------------'
|Ctr|Alt | Space |Gui |Ctr|
`-----------------------------------------------'
#### *HHKB/WASD Layer*
,---------------------------------------------------------.
|Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Delet|
|---------------------------------------------------------|
|Caps |Hom| Up|PgU| | | | |Psc|Slk|Pau|Up | |Ins|
|---------------------------------------------------------|
|Fn0 |Lef|Dow|Rig| | | | |Hom|PgU|Lef|Rig|Return|
|---------------------------------------------------------|
|Shift |End| |PgD| |VoD|VoU|Mut|End|PgD|Dow|Shift |
`---------------------------------------------------------'
|Ctr|Alt | Space |Gui |Ctr|
`-----------------------------------------------'
### M0110A
#### *Default*
,---------------------------------------------------------. ,---------------.
| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs| |Gui| =| /| *|
|---------------------------------------------------------| |---------------|
|Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | | 7| 8| 9| -|
|-----------------------------------------------------' | |---------------|
|Fn0 | A| S| D| F| G| H| J| K| L| ;| '|Return| | 4| 5| 6| +|
|---------------------------------------------------------| |---------------|
|Shift | Z| X| C| V| B| N| M| ,| ,| /|Shft|Up | | 1| 2| 3| |
|---------------------------------------------------------| |-----------|Ent|
|Ctrl |Alt | Space | \|Lft|Rgt|Dn | | 0| .| |
`---------------------------------------------------------' `---------------'
#### *HHKB/WASD/mousekey Layer*
,---------------------------------------------------------. ,---------------.
|Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Delet| |Nlk|Mb1|Mb3|Mb2|
|---------------------------------------------------------| |---------------|
|Caps |Hom| Up|PgU| | | | |Psc|Slk|Pau|Up | | | |MwD|McU|MwU|MwU|
|-----------------------------------------------------' | |---------------|
|Fn0 |Lef|Dow|Rig| | | | |Hom|PgU|Lef|Rig|Return| |McL|McD|McR|MwD|
|---------------------------------------------------------| |---------------|
|Shift |End| |PgD| |VoD|VoU|Mut|End|PgD|Dow|Shif|Up | |MwL|McD|MwR| |
|---------------------------------------------------------| |-----------|Mb2|
|Ctrl |Alt | Space |Ins|Lft|Rgt|Dn | | Mb1|Mb3| |
`---------------------------------------------------------' `---------------'
Debug
-----
You can use [PJRC HID listen](http://www.pjrc.com/teensy/hid_listen.html) to see debug output.
The converter has some functions for debug, press `Alt+Gui+H` simultaneously to get help.
These function is totally undocumented, tentative, inconsistent and buggy.
|
