{
  signal: [
    {name: 'clk', wave: 'p...|....'},
    {},
    ['input port',
      {name: 'addr',  wave: 'x3x.|....', data: ['A0']},
      {name: 'data',  wave: 'xxx.|....', data: ["D0"]},
      {name: 'rw',    wave: 'x0x.|....'},
      {name: 'valid', wave: '010.|....'},
    ],

     {}, {},

    ['output port',
      {name: 'addr',  wave: 'x...|.3x.', data: ['A0']},
      {name: 'data',  wave: 'x...|.8x.', data: ['D0']},
      {name: 'rw',    wave: 'x...|.0x.'},
      {name: 'valid', wave: '0...|.10.'},
    ],

     {}, {},

  ],
  head: {text: 'Read Transaction'},
  config: {hscale: 1}
}