2012-03-23 22:43:37 +06:00
|
|
|
X68000 to USB keyboard protocol converter
|
|
|
|
|
=========================================
|
|
|
|
|
SHARP X68000 is a hobby computer released in Japan.(1987-93)
|
|
|
|
|
http://en.wikipedia.org/wiki/Sharp_X68000
|
|
|
|
|
|
|
|
|
|
X68000 keyboard has ALPS linear switches.
|
|
|
|
|
- DSETK0016CE01 green linear
|
2013-06-21 11:25:09 +06:00
|
|
|
- DSETK0022CE02 yellow linear
|
2012-03-23 22:43:37 +06:00
|
|
|
- DSETK0023CE03 yellow linear
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Hardware
|
|
|
|
|
--------
|
|
|
|
|
Target MCU is ATMega32u4 but other USB capable AVR will also work.
|
2014-01-05 09:45:52 +06:00
|
|
|
You can use PJRC Teensy as development board.
|
2012-03-23 22:43:37 +06:00
|
|
|
http://www.pjrc.com/teensy/
|
|
|
|
|
|
|
|
|
|
Wiring:
|
|
|
|
|
Mini-DIN Teensy
|
|
|
|
|
-----------------------------------------------------
|
|
|
|
|
pin1 +5V VCC
|
|
|
|
|
pin2 MOUSE -
|
|
|
|
|
pin3 RXD PD2(RXD)
|
|
|
|
|
pin4 TXD PD3(TXD) NOTE: Not supported yet.
|
|
|
|
|
pin5 READY -
|
|
|
|
|
pin6 REMOTE -
|
|
|
|
|
pin7 GND GND
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Firmware
|
|
|
|
|
--------
|
|
|
|
|
Build:
|
|
|
|
|
$ cd x68k_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
|
|
|
|
|
------------------
|
2014-01-05 09:45:52 +06:00
|
|
|
- LED control ON/OFF(0/1)
|
2012-03-23 22:43:37 +06:00
|
|
|
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| |
|
|
|
|
|
`---------------------------------------------' `-----------' `---------------'
|
2013-06-21 11:25:09 +06:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
LED Special Functions
|
|
|
|
|
---------------------
|
|
|
|
|
http://homepage2.nifty.com/m_kamada/docs/unlistedx68k.htm#keyboard
|
|
|
|
|
|
|
|
|
|
1. Random Illumination
|
|
|
|
|
Plug in with pressing F1, F2 and F3.
|
|
|
|
|
|
|
|
|
|
2. Sequential Illumination
|
|
|
|
|
Plug in with pressing 記号入力(52), 登録(53) and HELP.
|
|
|
|
|
|
|
|
|
|
3. Scan code Display
|
|
|
|
|
Plug in with pressing かな(5A), ローマ字(5B) and コード入力(5C).
|
|
|
|
|
You can see its scan code on LEDs by pressing a key.
|
|
|
|
|
+---------------------------------------------------+
|
|
|
|
|
|bit|6 |5 |4 |3 |2 |1 |0 |
|
|
|
|
|
|---+----+--------+---+----+----------+--------+----|
|
|
|
|
|
|LED|全角|ひらがな|INS|CAPS|コード入力|ローマ字|かな|
|
|
|
|
|
+---------------------------------------------------+
|
