converter/x68k_usb/README

   1 X68000 to USB keyboard protocol converter
   2 =========================================
   3 SHARP X68000 is a hobby computer released in Japan.(1987-93)
   4 http://en.wikipedia.org/wiki/Sharp_X68000
   5
   6 X68000 keyboard has ALPS linear switches.
   7 - DSETK0016CE01   green linear
   8 - DSETK0022CE02   yellow linear
   9 - DSETK0023CE03   yellow linear
  10
  11
  12 Hardware
  13 --------
  14 Target MCU is ATMega32u4 but other USB capable AVR will also work.
  15 You can use PJRC Teensy as development board.
  16     http://www.pjrc.com/teensy/
  17
  18 Wiring:
  19     Mini-DIN            Teensy
  20     -----------------------------------------------------
  21     pin1   +5V          VCC
  22     pin2   MOUSE        -
  23     pin3   RXD          PD2(RXD)
  24     pin4   TXD          PD3(TXD) NOTE: Not supported yet.
  25     pin5   READY        -
  26     pin6   REMOTE       -
  27     pin7   GND          GND
  28
  29
  30 Firmware
  31 --------
  32 Build:
  33     $ cd x68k_usb
  34     $ make
  35
  36 And load the binary to MCU with your favorite programmer.
  37 If you use Teensy you can load with PJRC Teensy Loader tool.
  38     http://www.pjrc.com/teensy/loader.html
  39
  40
  41 *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
  42
  43
  44 X68000 Keyboard Protocol
  45 ========================
  46 http://kyoutan.jpn.org/uts/pc/pic/x68key/
  47
  48
  49 Connector
  50 ---------
  51 Mini DIN 7pin(female connector on computer side)
  52        7 6 5
  53        o o o
  54     4 o  =  o 3
  55         o o
  56         2 1
  57
  58     Mini-DIN
  59     -------------
  60     pin1   +5V
  61     pin2   MOUSE
  62     pin3   RXD
  63     pin4   TXD
  64     pin5   READY
  65     pin6   REMOTE
  66     pin7   GND
  67
  68
  69 Signaling
  70 ---------
  71 - TXD,RXD
  72     Asynchronous, 2400baud, 1-startbit(L), 8-databit, 1-stopbit(H)
  73
  74 - READY
  75     ready/not ready(1/0)
  76
  77
  78 Data from keyboard
  79 ------------------
  80 bit 7       make/break flag(0/1)
  81 bit 6-0     following scan code
  82
  83
  84 Data from computer
  85 ------------------
  86 - LED control ON/OFF(0/1)
  87     bit 7   1(fixed)
  88     bit 6   全角
  89     bit 5   ひらがな
  90     bit 4   INS
  91     bit 3   CAPS
  92     bit 2   コード入力
  93     bit 1   ローマ字
  94     bit 0   かな
  95
  96 - Repeat delay
  97     bit 7   0(fixed)
  98     bit 6   1(fixed)
  99     bit 5   1(fixed)
 100     bit 4   0(fixed)
 101     bit 3-0 delay
 102     REPEAT_DELAY = 200+delay*100 ms
 103     default: 500ms
 104
 105 -  Repeat time
 106     bit 7   0(fixed)
 107     bit 6   1(fixed)
 108     bit 5   1(fixed)
 109     bit 4   1(fixed)
 110     bit 3-0 time
 111     REPEAT_TIME = 30+time^2*5 ms
 112     default: 110ms
 113
 114
 115 Scan Codes
 116 ----------
 117 ,---. ,---.    ,-------------------,    ,-------------------.  ,-----------. ,---------------.
 118 | 61| | 62|    | 63| 64| 65| 66| 67|    | 68| 69| 6A| 6B| 6C|  | 5A| 5B| 5C| | 5D| 52| 53| 54|
 119 `---' `---'    `-------------------'    `-------------------'  `-----------' `---------------'
 120 ,-----------------------------------------------------------.  ,-----------. ,---------------.
 121 | 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E| 0F|  | 36| 5E| 37| | 3F| 40| 41| 42|
 122 |-----------------------------------------------------------|  |------------ |---------------|
 123 |  10 | 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| 1C|     |  | 38| 39| 3A| | 43| 44| 45| 46|
 124 |------------------------------------------------------. 1D |  `---=====---' |---------------|
 125 |  71  | 1E| 1F| 20| 21| 2l| 23| 24| 25| 26| 27| 28| 29|    |   ___| 3C|___  | 47| 48| 49| 4A|
 126 |-----------------------------------------------------------|  | 3B|---| 3D| |-----------|---|
 127 |  70    | 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34|   70 |  `---| 3E|---' | 4B| 4C| 4D|   |
 128 `-----------------------------------------------------------|  .---=====---. |-----------| 4E|
 129        | 5F| 55 | 56 |     35     | 57 | 58 | 59 | 60|         |  72 |  73 | | 4F| 50| 51|   |
 130        `---------------------------------------------'         `-----------' `---------------'
 131
 132
 133
 134 LED Special Functions
 135 ---------------------
 136 http://homepage2.nifty.com/m_kamada/docs/unlistedx68k.htm#keyboard
 137
 138 1. Random Illumination
 139     Plug in with pressing F1, F2 and F3.
 140
 141 2. Sequential Illumination
 142     Plug in with pressing 記号入力(52), 登録(53) and HELP.
 143
 144 3. Scan code Display
 145     Plug in with pressing かな(5A), ローマ字(5B) and コード入力(5C).
 146     You can see its scan code on LEDs by pressing a key.
 147    +---------------------------------------------------+
 148    |bit|6   |5       |4  |3   |2         |1       |0   |
 149    |---+----+--------+---+----+----------+--------+----|
 150    |LED|全角|ひらがな|INS|CAPS|コード入力|ローマ字|かな|
 151    +---------------------------------------------------+