tmk 796defa86c Fix deprecated 'prog_*' typedef - Issue #34 há 12 anos atrás
..
Makefile 353a9b56e6 Fix BOOTLOADER_SIZE setting há 12 anos atrás
README fea6792f16 New keymap of PC98 há 12 anos atrás
config.h 1d5bbb55f2 Fix legacy keymap support há 12 anos atrás
keymap.c 796defa86c Fix deprecated 'prog_*' typedef - Issue #34 há 12 anos atrás
led.c f68c5bf0d3 Add initial files for PC98 há 12 anos atrás
matrix.c c6d88d2795 Rename file layer_switch to action_layer há 12 anos atrás

README

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