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M0110/M0110A to USB keyboard converter
======================================
This firmware converts the protocol of Apple Macintosh keyboard **M0110**, **M0110A** and **M0120** into USB. Target of this project is USB AVR controller **ATmega32U4**. Using this converter you can revive these retro keyboards with modern computer.
Pictures of **M0110 + M0120** and **M0110A**.
- M0110A support was contributed by [skagon@github](https://github.com/skagon).
- M0120 also is supported. keys(+ * / and ,) on M0120 are recognized as cursor keys.
Update
------
- 2013/08: Change port for signals `PF` to `PD`
- 2013/09: Change port again, it uses inversely `PD0` for data and `PD1` for clock line now.
Building Hardware
-----------------
You need **4P4C** cable and **ATMega32U4** board like PJRC [Teensy]. Port of the MCU `PD1` is assigned to `CLOCK` line and `PD0` to `DATA` by default, you can change pin configuration with editing `config.h`.
[](http://i.imgur.com/4G2ZOeg.jpg)
### 4P4C phone handset cable
Note that original cable used with Mac is **straight** while phone handset cable is **crossover**.
<http://en.wikipedia.org/wiki/Modular_connector#4P4C>
Close-up picture of handset cable. You can see one end of plug has reverse color codes against the other. Click to enlarge.
[](http://i.imgur.com/3S9P1mY.jpg?1)
[Teensy]: http://www.pjrc.com/teensy/
### Socket Pinout
- <http://pinouts.ru/Inputs/MacKeyboard_pinout.shtml>
### Pull-up Resistor
You may need pull-up resistors on signal lines(`CLOCK`, `DATA`) in particular when you have long or coiled cable. **1k-10k Ohm** will be OK for this purpose. In that case the converter may not read signal from keyboard correctly without pull-up resistors.
Building Firmware
-----------------
To compile firmware you need AVR GCC. 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 -f Makefile clean
$ make -f Makefile
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 & M0120
#### *Default Layer*
,---------------------------------------------------------. ,---------------.
| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs| |Clr| -|Lft|Rgt|
|---------------------------------------------------------| |---------------|
|Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \| | 7| 8| 9| Up|
|---------------------------------------------------------| |---------------|
|Caps | A| S| D| F| G| H| J| K| L| ;| '|Enter | | 4| 5| 6| Dn|
|---------------------------------------------------------| |---------------|
|Shift | Z| X| C| V| B| N| M| ,| ,| /|Shift | | 1| 2| 3| |
`---------------------------------------------------------' |-----------|Ent|
|Ctl|Gui | Space |Alt |Ctl| | 0| .| |
`-----------------------------------------------' `---------------'
- `Space` and `Enter` also work as `Fn` layer switch key when holding down.
#### *Function Layer(WASD/HHKB)*
,---------------------------------------------------------. ,---------------.
|Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Delet| |Nlk| -|Lft|Rgt|
|---------------------------------------------------------| |---------------|
|Caps |Hom| Up|PgU| | | | |Psc|Slk|Pau|Up |Ins| \| | 7| 8| 9| Up|
|---------------------------------------------------------| |---------------|
|Caps |Lef|Dow|Rig| | | | |Hom|PgU|Lef|Rig|Enter | | 4| 5| 6| Dn|
|---------------------------------------------------------| |---------------|
|Shift |End| |PgD| | | | |End|PgD|Dow|Shift | | 1| 2| 3| |
`---------------------------------------------------------' |-----------|Ent|
|Ctl|Gui | Space |Alt |Ctl| | 0| .| |
`-----------------------------------------------' `---------------'
### M0110A
#### *Default Layer*
,---------------------------------------------------------. ,---------------.
| `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs| |Clr| =| /| *|
|---------------------------------------------------------| |---------------|
|Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | | 7| 8| 9| -|
|-----------------------------------------------------' | |---------------|
|Caps | A| S| D| F| G| H| J| K| L| ;| '|Enter | | 4| 5| 6| +|
|---------------------------------------------------------| |---------------|
|Shift | Z| X| C| V| B| N| M| ,| ,| /|Shft| Up| | 1| 2| 3| |
|---------------------------------------------------------| |-----------|Ent|
|Ctrl |Gui | Space | \|Lft|Rgt|Dwn| | 0| .| |
`---------------------------------------------------------' `---------------'
- `Space` and `Enter` also work as `Fn` layer switch key when holding down.
- `Backslash(\)` also works as `Alt` when holding down.
#### *Function Layer(WASD/HHKB)*
,---------------------------------------------------------. ,---------------.
|Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Delet| |Nlk| =| /| *|
|---------------------------------------------------------| |---------------|
|Caps |Hom| Up|PgU| | | | |Psc|Slk|Pau|Up |Ins| | | 7| 8| 9| -|
|-----------------------------------------------------' | |---------------|
|Caps |Lef|Dow|Rig| | | | |Hom|PgU|Lef|Rig|Enter | | 4| 5| 6| +|
|---------------------------------------------------------| |---------------|
|Shift |End| |PgD| | | | |End|PgD|Dow|Shif|PgU| | 1| 2| 3| |
|---------------------------------------------------------| |-----------|Ent|
|Ctrl |Gui | Space | \|Hom|End|PgD| | 0| .| |
`---------------------------------------------------------' `---------------'
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 `<Command>+H` simultaneously to get help.
- Command: `Shift+Option+Command`(`Shift+Alt+Gui` or `Shift+Alt+Control`)
|
