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Sun to USB keyboard protocol converter
======================================
TODO
----
AVR UART engine expect positive logic while Sun keyboard signal is inverted serial.
To use AVR UART engine you need inverter in front of RX and TX pin.
Otherwise you can software serial routine to communicate the keyboard.
Hardware
--------
Target MCU is ATMega32u4 but other USB capable AVR will also work.
You can use PJRC Teensy as dev board.
http://www.pjrc.com/teensy/
Connector
8Pin mini DIN
___ ___
/ |_| \
/ 8 7 6 \
| 5 4 3 |
\_ 2 1 _/
\_____/
(receptacle)
Wiring:
Pin mini DIN Teensy
----------------------------------
1 GND GND
2 GND GND
3 5V
4 RX/TX(Mouse)
5 RX PD2
6 TX PD3
7 GND GND
8 5V VCC
Firmware
--------
Build:
$ cd sun_usb
$ make
And load the binary to MCU with your favorite programmer.
If you use Teensy you can load with PJRC Teensy Loader tool.
http://www.pjrc.com/teensy/loader.html
* * * * * * * * * * * * * * * * * *
X68000 Keyboard Protocol
========================
http://kyoutan.jpn.org/uts/pc/pic/x68key/
Connector
---------
Mini DIN 7pin(female connector on computer side)
7 6 5
o o o
4 o = o 3
o o
2 1
Mini-DIN
-------------
pin1 +5V
pin2 MOUSE
pin3 RXD
pin4 TXD
pin5 READY
pin6 REMOTE
pin7 GND
Signaling
---------
- TXD,RXD
Asynchronous, 2400baud, 1-startbit(L), 8-databit, 1-stopbit(H)
- READY
ready/not ready(1/0)
Data from keyboard
------------------
bit 7 make/break flag(0/1)
bit 6-0 following scan code
Data from computer
------------------
- LED contorol ON/OFF(0/1)
bit 7 1(fixed)
bit 6 全角
bit 5 ひらがな
bit 4 INS
bit 3 CAPS
bit 2 コード入力
bit 1 ローマ字
bit 0 かな
- Repeat delay
bit 7 0(fixed)
bit 6 1(fixed)
bit 5 1(fixed)
bit 4 0(fixed)
bit 3-0 delay
REPEAT_DELAY = 200+delay*100 ms
default: 500ms
- Repeat time
bit 7 0(fixed)
bit 6 1(fixed)
bit 5 1(fixed)
bit 4 1(fixed)
bit 3-0 time
REPEAT_TIME = 30+time^2*5 ms
default: 110ms
Scan Codes
----------
,---. ,---. ,-------------------, ,-------------------. ,-----------. ,---------------.
| 61| | 62| | 63| 64| 65| 66| 67| | 68| 69| 6A| 6B| 6C| | 5A| 5B| 5C| | 5D| 52| 53| 54|
`---' `---' `-------------------' `-------------------' `-----------' `---------------'
,-----------------------------------------------------------. ,-----------. ,---------------.
| 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E| 0F| | 36| 5E| 37| | 3F| 40| 41| 42|
|-----------------------------------------------------------| |------------ |---------------|
| 10 | 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| 1C| | | 38| 39| 3A| | 43| 44| 45| 46|
|------------------------------------------------------. 1D | `---=====---' |---------------|
| 71 | 1E| 1F| 20| 21| 2l| 23| 24| 25| 26| 27| 28| 29| | ___| 3C|___ | 47| 48| 49| 4A|
|-----------------------------------------------------------| | 3B|---| 3D| |-----------|---|
| 70 | 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34| 70 | `---| 3E|---' | 4B| 4C| 4D| |
`-----------------------------------------------------------| .---=====---. |-----------| 4E|
| 5F| 55 | 56 | 35 | 57 | 58 | 59 | 60| | 72 | 73 | | 4F| 50| 51| |
`---------------------------------------------' `-----------' `---------------'
|
