tmk_keyboard

Keyboard firmwares for Atmel AVR and Cortex-M

tmk 1d5bbb55f2 Fix legacy keymap support - need to define USE_LEGACY_KEYMAP to use legacy keymap		11 年前
..
Makefile	Add serial_uart.c and use it for PC98	11 年前
README	New keymap of PC98	11 年前
config.h	Fix legacy keymap support	11 年前
keymap.c	Fix keymap for new framework	11 年前
led.c	Add initial files for PC98	11 年前
matrix.c	Add serial_uart.c and use it for PC98	11 年前

PC98 to USB keyboard protocol converter
=======================================
Target MCU is ATMega32u4 but other USB capable AVR will also work.


Connector
---------

    8Pin mini DIN
       ___ ___
      /  |_|  \
     / 8  7  6 \
    | 5    4  3 |
     \_ 2   1 _/
       \_____/  
     (receptacle)


Wiring: You can change this with ediging config.h.

    Pin mini DIN        MCU
    ----------------------------------
    1  ~RST             PD1
    2   GND             GND
    3  ~RDY             PD4
    4   RXD             PD2
    5  ~RTY             PD5
    6   NC                 
    7   NC                 
    8   5V              VCC




Protocol
--------
Singnal: Asynchronous, Positive logic, 19200baud, Least bit first
Frame format: 1-Start bit(Lo), 8-Data bits, Odd-Parity, 1-Stop bit

This converter uses software method for testing purpose. AVR UART engine will work better.




Build Firmware
--------------
Just use 'make'

    $ cd pc98_usb
    $ make

Then, load the binary to MCU with your favorite programmer.



Other PC98 converter projects and resource
------------------------------------------
PC98 to USB
http://davy.nyacom.net/kbd98usb/

PC98 to PS/2
http://www.tsp.ne.jp/~sawada/mago/c_gka98at.htm
http://www.tsp.ne.jp/~sawada/mago/src/gka98at.asm

PC98 keyboard commands
http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt


Inhibit repeating key:
0x9C, 0x70

README