{signal: [
  {name: 'clk',     wave: 'P...'},
  {name: 'rst',     wave: '01..'},
  {},
  {name: 'wb_cyc',   wave: '0.1.'},
  {name: 'wb_stb',   wave: '0.10'},
  {name: 'wb_we',    wave: 'x.1x'},
  {name: 'wb_adr[31:0]',   wave: 'x.3x', data: ['h..3']},
  {name: 'wb_sel[3:0]',   wave: 'x.3x', data: ['1']},
  {name: 'wb_stall', wave: 'x.0x'},
  {},
  {name: 'axi_avalid', wave: '0..1'},
  {name: 'axi_awaddr[31:0]', wave: 'x..3', data: ['h..3']},
  {name: 'axi_wvalid', wave: '0..1'},
  {name: 'axi_wstrb[3:0]',  wave: 'x..3', data: ['1']}
]}