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qmk_firmware/converter/m0110_usb
History
tmk ce8b1e5f13 m0110_usb: Change keymap and Makefile 10 years ago
..
Makefile
…
Makefile.teensy
…
Makefile.tmk_rev1 m0110_usb: Change keymap and Makefile 10 years ago
Makefile.tmk_rev2 m0110_usb: Change keymap and Makefile 10 years ago
README.md m0110_usb: Change keymap and Makefile 10 years ago
config.h
…
keymap_common.c
…
keymap_common.h m0110_usb: Change keymap and Makefile 10 years ago
keymap_default.c m0110_usb: Change keymap and Makefile 10 years ago
keymap_hasu.c
…
keymap_intl.c m0110_usb: Change keymap and Makefile 10 years ago
keymap_spacefn.c
…
led.c
…
matrix.c
…

README.md

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 like ATmega32U2 and ATmega32U4. Using this converter you can revive these retro keyboards with modern computer.

Read README of top directory too.

Pictures of M0110 + M0120 and M0110A.

M0110+M0120 M0110A

  • M0110A support was contributed by skagon@github.
  • 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.
  • 2014/06: Change keymaps
  • 2015/03: Add support for "International"(ISO) keyboard(keymap_intl.c)

Building Hardware

You need TMK converter or AVR dev 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.

M0110 Converter

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. 4P4C cable

Socket Pinout

Jack fig

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. Also KEYMAP option can be used to select keymap.

$ git clone git://github.com/tmk/tmk_keyboard.git (or download source)
$ cd m0110_usb
$ make -f Makefile.rev2 clean
$ make -f Makefile.rev2 [KEYMAP={default|intl|spacefn|hasu}]

Use Maefile.tmk_rev1 for TMK converter Rev.1, Makefile.teensy for Teensy instead.

Keymap

To create your own keymap copy existent keymap file to keymap_name.c and edit it.

Debug

You can use PJRC HID listen to see debug output. The converter has some functions for debug, press <Magic>+H simultaneously to get help.

  • Magic combo: Shift+Option+⌘ or Shift+Option+Ctrl(Shift+Alt+Gui or Shift+Alt+Control)