1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
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 ... (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|
`-----------------------------------------------'
You can register Esc by hitting(press&release) Fn0 quickly.
#### *HHKB/WASD cursor Layer(Fn0)*
,---------------------------------------------------------.
|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 cursor Layer(Fn0)*
,---------------------------------------------------------. ,---------------.
|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| -|
|-----------------------------------------------------' | |---------------|
|Fn0 |Lef|Dow|Rig| | | | |Hom|PgU|Lef|Rig|Return| | 4| 5| 6| +|
|---------------------------------------------------------| |---------------|
|Shift |End| |PgD| |VoD|VoU|Mut|End|PgD|Dow|Shif|Up | | 1| 2| 3| |
|---------------------------------------------------------| |-----------|Ent|
|Ctrl |Alt | Space | \|Lft|Rgt|Dn | | 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 `Alt+Gui+H` simultaneously to get help.
These function is totally undocumented, tentative, inconsistent and buggy.
Arrow Keys
----------
Dedicated arrow keys of the M0110A are transmitting the same scancodes as the keypad but also,
its [=], [/], [*] and [+] keys (hereafter referred to as "calc" keys) are not assigned new
scancodes but, instead, transmit a sequence of scancodes which emulates the [Shift] key press,
followed by the same scancode sequence of the arrow keys!
The problem with that approach is that, while in most cases it's easy to distinguish between
a user-generated [Shift] key event (press or release) followed by an arrow or a calc key and
a simulated [Shift] key event generated upon a calc key event, when the user is typing fairly
fast, it is possible that the two events become indistinguishable, and produce undesired results
-- nothing major, though, just one or two stray characters or cursor movements; it will NOT
format your drives, kill your cat or make your wife run away with the pizza boy.
|
