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qmk_firmware/converter/pc98_usb
tmk 5808317b69
Fix keymap for new framework
12 years ago
..
Makefile Add serial_uart.c and use it for PC98 12 years ago
README New keymap of PC98 12 years ago
config.h Fix software serial configure 12 years ago
keymap.c Fix keymap for new framework 12 years ago
led.c Add initial files for PC98 12 years ago
matrix.c Add serial_uart.c and use it for PC98 12 years ago

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