converter/sun_usb/README

   1 Sun to USB keyboard protocol converter
   2 ======================================
   3
   4 TODO
   5 ----
   6 AVR UART engine expect positive logic while Sun keyboard signal is inverted serial.
   7 To use AVR UART engine you need inverter in front of RX and TX pin.
   8 Otherwise you can software serial routine to communicate the keyboard.
   9
  10
  11 Hardware
  12 --------
  13 Target MCU is ATMega32u4 but other USB capable AVR will also work.
  14 You can use PJRC Teensy as dev board.
  15     http://www.pjrc.com/teensy/
  16
  17 Connector
  18   8Pin mini DIN
  19      ___ ___
  20     /  |_|  \
  21    / 8  7  6 \
  22   | 5    4  3 |
  23    \_ 2   1 _/
  24      \_____/
  25    (receptacle)
  26
  27 Wiring:
  28 Pin mini DIN        Teensy
  29 ----------------------------------
  30 1   GND             GND
  31 2   GND             GND
  32 3   5V
  33 4   RX/TX(Mouse)
  34 5   RX              PD2
  35 6   TX              PD3
  36 7   GND             GND
  37 8   5V              VCC
  38
  39
  40
  41 Firmware
  42 --------
  43 Build:
  44     $ cd sun_usb
  45     $ make
  46
  47 And load the binary to MCU with your favorite programmer.
  48 If you use Teensy you can load with PJRC Teensy Loader tool.
  49     http://www.pjrc.com/teensy/loader.html
  50
  51
  52 *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
  53
  54
  55 X68000 Keyboard Protocol
  56 ========================
  57 http://kyoutan.jpn.org/uts/pc/pic/x68key/
  58
  59
  60 Connector
  61 ---------
  62 Mini DIN 7pin(female connector on computer side)
  63        7 6 5
  64        o o o
  65     4 o  =  o 3
  66         o o
  67         2 1
  68
  69     Mini-DIN
  70     -------------
  71     pin1   +5V
  72     pin2   MOUSE
  73     pin3   RXD
  74     pin4   TXD
  75     pin5   READY
  76     pin6   REMOTE
  77     pin7   GND
  78
  79
  80 Signaling
  81 ---------
  82 - TXD,RXD
  83     Asynchronous, 2400baud, 1-startbit(L), 8-databit, 1-stopbit(H)
  84
  85 - READY
  86     ready/not ready(1/0)
  87
  88
  89 Data from keyboard
  90 ------------------
  91 bit 7       make/break flag(0/1)
  92 bit 6-0     following scan code
  93
  94
  95 Data from computer
  96 ------------------
  97 - LED contorol ON/OFF(0/1)
  98     bit 7   1(fixed)
  99     bit 6   全角
 100     bit 5   ひらがな
 101     bit 4   INS
 102     bit 3   CAPS
 103     bit 2   コード入力
 104     bit 1   ローマ字
 105     bit 0   かな
 106
 107 - Repeat delay
 108     bit 7   0(fixed)
 109     bit 6   1(fixed)
 110     bit 5   1(fixed)
 111     bit 4   0(fixed)
 112     bit 3-0 delay
 113     REPEAT_DELAY = 200+delay*100 ms
 114     default: 500ms
 115
 116 -  Repeat time
 117     bit 7   0(fixed)
 118     bit 6   1(fixed)
 119     bit 5   1(fixed)
 120     bit 4   1(fixed)
 121     bit 3-0 time
 122     REPEAT_TIME = 30+time^2*5 ms
 123     default: 110ms
 124
 125
 126 Scan Codes
 127 ----------
 128 ,---. ,---.    ,-------------------,    ,-------------------.  ,-----------. ,---------------.
 129 | 61| | 62|    | 63| 64| 65| 66| 67|    | 68| 69| 6A| 6B| 6C|  | 5A| 5B| 5C| | 5D| 52| 53| 54|
 130 `---' `---'    `-------------------'    `-------------------'  `-----------' `---------------'
 131 ,-----------------------------------------------------------.  ,-----------. ,---------------.
 132 | 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E| 0F|  | 36| 5E| 37| | 3F| 40| 41| 42|
 133 |-----------------------------------------------------------|  |------------ |---------------|
 134 |  10 | 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| 1C|     |  | 38| 39| 3A| | 43| 44| 45| 46|
 135 |------------------------------------------------------. 1D |  `---=====---' |---------------|
 136 |  71  | 1E| 1F| 20| 21| 2l| 23| 24| 25| 26| 27| 28| 29|    |   ___| 3C|___  | 47| 48| 49| 4A|
 137 |-----------------------------------------------------------|  | 3B|---| 3D| |-----------|---|
 138 |  70    | 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34|   70 |  `---| 3E|---' | 4B| 4C| 4D|   |
 139 `-----------------------------------------------------------|  .---=====---. |-----------| 4E|
 140        | 5F| 55 | 56 |     35     | 57 | 58 | 59 | 60|         |  72 |  73 | | 4F| 50| 51|   |
 141        `---------------------------------------------'         `-----------' `---------------'