mirror of
https://github.com/qmk/qmk_firmware.git
synced 2025-09-10 17:15:43 +00:00
796defa86c
- Remove prog_char from xpritnf - Remove prog_macro_t from acton_macro avr-libc-1.8 removed 'prog_*' typedef because the usage of the __progmem__ attribute on a type is not supported in GCC. http://www.nongnu.org/avr-libc/changes-1.8.html
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