converter/pc98_usb/README

   1 PC98 to USB keyboard protocol converter
   2 =======================================
   3 Target MCU is ATMega32u4 but other USB capable AVR will also work.
   4
   5
   6 Connector
   7 ---------
   8
   9     8Pin mini DIN
  10        ___ ___
  11       /  |_|  \
  12      / 8  7  6 \
  13     | 5    4  3 |
  14      \_ 2   1 _/
  15        \_____/
  16      (receptacle)
  17
  18
  19 Wiring: You can change this with editing config.h.
  20
  21     Pin mini DIN        MCU
  22     ----------------------------------
  23     1  ~RST             PD1
  24     2   GND             GND
  25     3  ~RDY             PD4
  26     4   RXD             PD2
  27     5  ~RTY             PD5
  28     6   NC
  29     7   NC
  30     8   5V              VCC
  31
  32
  33
  34
  35 Protocol
  36 --------
  37 Signal: Asynchronous, Positive logic, 19200baud, Least bit first
  38 Frame format: 1-Start bit(Lo), 8-Data bits, Odd-Parity, 1-Stop bit
  39
  40 This converter uses software method for testing purpose. AVR UART engine will work better.
  41
  42
  43
  44
  45 Build Firmware
  46 --------------
  47 Just use 'make'
  48
  49     $ cd pc98_usb
  50     $ make
  51
  52 Then, load the binary to MCU with your favorite programmer.
  53
  54
  55
  56 Other PC98 converter projects and resource
  57 ------------------------------------------
  58 PC98 to USB
  59 http://davy.nyacom.net/kbd98usb/
  60
  61 PC98 to PS/2
  62 http://www.tsp.ne.jp/~sawada/mago/c_gka98at.htm
  63 http://www.tsp.ne.jp/~sawada/mago/src/gka98at.asm
  64
  65 PC98 keyboard commands
  66 http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt
  67
  68
  69 Inhibit repeating key:
  70 0x9C, 0x70