local group_osc1 = Group {
  name = "OSC1",
    Parameter {
    id = "ms1",
    name = "Multisound 1",
    number = 58,
    max_value = 15,
  },
    Parameter {
    id = "octave1",
    name = "Octave",
    number = 63,
    items = {"16'","8","4"},
    item_values = {0,1,2},
  },
  Parameter {
    id = "level1",
    name = "Level",
    number = 0,
    max_value = 100,
  },
    Parameter {
    id = "bit_res",
    name = "Bit Resolution",
    number = 62,
    items = {"6 bit","7 bit","8 bit","10 bit","12 bit"},
    item_values = {0,1,2,3,4},
  },
  Parameter {
    id = "sync",
    name = "Sync",
    number = 61,
    items = {"Off","On"},
    item_values = {0,1},
  },
    Parameter {
    id = "osc_bend_range",
    name = "Osc Bend Range",
    number = 60,
    max_value = 12,
  },
}
local group_osc2 = Group {
 name = "OSC2",
    Parameter {
    id = "ms2",
    name = "Multisound 2",
    number = 59,
    max_value = 15,
  },
    Parameter {
    id = "octave2",
    name = "Octave",
    number = 64,
    items = {"16'","8","4"},
    item_values = {0,1,2},
  },
  Parameter {
    id = "level2",
    name = "Level",
    number = 1,
    max_value = 100,
  },
  Parameter {
    id = "interval",
    name = "Interval",
    number = 66,
    max_value = 11,
  },
  Parameter {
    id = "detune",
    name = "Detune",
    number = 65,
    max_value = 63,
  },
    Parameter {
    id = "noise",
    name = "Noise Level",
    number = 3,
    max_value = 63,
  },
}
local group_autobend = Group {
  name = "AUTOBEND",  
  Parameter {
    id = "bend_select",
    name = "Bend Select",
    number = 71,
    items = {"Off","Osc1","Osc2","Both"},
    item_values = {0,1,2,3},
  },
  Parameter {
    id = "Bend_mode",
    name = "Bend Polarity",
    number = 72,
    items = {"Down","Up"},
    item_values = {0,1},
  },
  Parameter {
    id = "Bend_time",
    name = "Bend Time",
    number = 73,
    max_value = 31,
  },
  Parameter {
    id = "Bend_intensity",
    name = "Bend Intensity",
    number = 2,
     max_value = 127,
  },
   Parameter {
    id = "autoBend_intensity",
    name = "Vel Sens Intensity",
    number = 27,
     max_value = 63
  },
}
local group_keyassign = Group {
  name = "KEY ASSIGN",
    Parameter {
    id = "assign",
    name = "Assign",
    number = 76,
    items = {"Poly2","Poly1","Unison"},
    item_values = {0,1,2},
  },
    Parameter {
    id = "voices",
    name = "Voices",
    number = 77,
    items = {"2","4","6","8"},
    item_values = {0,1,2,3},
  },
    Parameter {
    id = "unisondetune",
    name = "Unison Detune",
    number = 74,
    max_value = 7,
  },
}  
local group_ddl1 = Group {
  name = "DIGITAL DELAY 1",
  Parameter {
    id = "delay1time",
    name = "Delay Time",
    number = 46,
        value_callback = function(parameter) 
        local synth_definition = parameter.synth_definition 
        local msb = math.floor(parameter:value() / 127) 
        if parameter:value() < 128 
        then parameter.number = 0 
        return parameter:value() 
        else parameter.number = msb 
        return parameter:value() - ( msb * 127 ) 
     end 
end
  },
  Parameter {
    id = "feedback1",
    name = "Feedback",
    number = 47,
    max_value = 15,
  },
  Parameter {
    id = "Mga_intensity1",
    name = "MG-A Intensity",
    number = 49,
    max_value = 63,
  },
  Parameter {
    id = "Mgb_intensity1",
    name = "MG-B Intensity",
    number = 50,
    max_value = 63,
  },
  Parameter {
    id = "effect_level1",
    name = "Effect Level",
    number = 48,
    max_value = 15,
  },
}
local group_aftertouch = Group {
  name = "AFTERTOUCH",
  Parameter {
    id = "Osc_MG",
    name = "Osc MG Intensity",
    number = 36,
    max_value = 15,
  },
  Parameter {
    id = "VCF",
    name = "MG VCF Cutoff",
    number = 37,
    max_value = 15,
  },
  Parameter {
    id = "VCA",
    name = "VCA Level",
    number = 39,
    max_value = 15,
  },
   Parameter {
    id = "vcfslot",
    name = "VCF Parameter Slot",
    number =38,
    items = {"MG","Cutoff"},
    item_values = {0,1},
  },
}
local group_vcf = Group {
  name = "VCF",
   Parameter {
    id = "mode",
    name = "Mode",
    number =4,
    items = {"12db","24db"},
    item_values = {0,1},
  },  
  Parameter {
    id = "vcf_cutoff_freq",
    name = "Cutoff",
    number = 6,
    max_value = 127,
  },
  Parameter {
    id = "vcf_resonance",
    name = "Resonance",
    number = 8,
    max_value = 63,
  },
  Parameter {
    id = "vcf_keyboard_track",
    name = "KBD Track",
    number = 9,
    max_value = 63,
  },
  Parameter {
    id = "polarity",
    name = "Polarity",
    number = 5,
    items = {"-","+"},
    item_values = {0,1},
  },
  Parameter {
    id = "EG_intensity",
    name = "EG Intensity",
    number = 7,
    max_value = 63,
  },
  Parameter {
    id = "vcf_attack_time",
    name = "Attack",
    number = 13,
    max_value = 63,
  },
  Parameter {
    id = "vcf_decay_time",
    name = "Decay",
    number = 14,
    max_value = 63,
  },
  Parameter {
    id = "vcf_break_point",
    name = "Break Point",
    number = 15,
    max_value = 63,
  },
  Parameter {
    id = "vcf_slope",
    name = "Slope",
    number = 16,
    max_value = 63,
  },
  Parameter {
    id = "vcf_Sustain",
    name = "Sustain",
    number = 17,
    max_value = 63,
  },
 Parameter {
    id = "vcf_Release",
    name = "Release",
    number = 18,
    max_value = 63,
  },
  Parameter {
    id = "vcf_velocity_sensco",
    name = "Vel Sens Cutoff",
    number = 28,
    max_value = 63,
  },
    Parameter {
    id = "vcf_velocity_sensat",
    name = "Vel Sens Attack",
    number = 29,
    max_value = 63,
  },
    Parameter {
    id = "vcf_velocity_sensde",
    name = "Vel Sens Decay",
    number = 30,
    max_value = 63,
  },
    Parameter {
    id = "vcf_velocity_senssl",
    name = "Vel Sens Slope",
    number = 31,
    max_value = 63,
  },
}
local group_vcfmod = Group {
  name = "VCF MOD",
    Parameter {
    id = "vcf_mg_freq",
    name = "MG Frequency",
    number = 10,
    max_value = 63,
  },
    Parameter {
    id = "vcf_mg_delay",
    name = "MG Delay",
    number = 11,
    max_value = 63,
  },
    Parameter {
    id = "vcf_mg_inten",
    name = "MG Intensity",
    number = 12,
    max_value = 63,
  },
}

local group_ddl2 = Group {
  name = "DIGITAL DELAY 2",
  Parameter {
    id = "inputselect",
    name = "Input Select",
    number = 51,
    items = {"Direct","DDL1"},
    item_values = {0,1},
  },
  Parameter {
    id = "delay2time",
    name = "Delay Time",
    number = 52,
    value_callback = function(parameter) 
        local synth_definition = parameter.synth_definition 
        local msb = math.floor(parameter:value() / 127) 
        if parameter:value() < 128 
        then parameter.number = 0 
        return parameter:value() 
        else parameter.number = msb 
        return parameter:value() - ( msb * 127 ) 
     end 
end


  },
  Parameter {
    id = "feedback2",
    name = "Feedback",
    number = 53,
    max_value = 15,
  },
  Parameter {
    id = "Mga_intensity2",
    name = "MG-A Intensity",
    number = 55,
    max_value = 63,
  },
  Parameter {
    id = "Mgb_intensity2",
    name = "MG-B Intensity",
    number = 56,
    max_value = 63,
  },
  Parameter {
    id = "effect_leve2l",
    name = "Effect Level",
    number = 54,
    max_value = 15,
  },
    Parameter {
    id = "mod_invert",
    name = "Mod Invert",
    number = 57,
    items = {"Normal","Invert"},
    item_values = {0,1},
  },
}

local group_vca = Group {
  name = "VCA",
  Parameter {
    id = "env_attack_time",
    name = "Attack",
    number = 21,
    max_value = 63,
  },
  Parameter {
    id = "env_decay_time",
    name = "Decay",
    number = 22,
    max_value = 63,
  },
  Parameter {
    id = "env_break_point",
    name = "Break Point",
    number = 23,
    max_value = 63,
  },
  Parameter {
    id = "env_slope",
    name = "Slope",
    number = 24,
    max_value = 63,
  },
  Parameter {
    id = "env_Sustain",
    name = "Sustain",
    number = 25,
    max_value = 63,
  },
 Parameter {
    id = "env_Release",
    name = "Release",
    number = 26,
    max_value = 63,
  },
   Parameter {
    id = "env_level",
    name = "Total Level",
    number = 20,
    max_value = 63,
  },
  Parameter {
    id = "env_eglevel",
    name = "VSens EG Level",
    number = 32,
    max_value = 63,
  },
    Parameter {
    id = "env_egattack",
    name = "VSens Attack",
    number = 33,
    max_value = 63,
  },
    Parameter {
    id = "env_egdecay",
    name = "VSens Decay",
    number = 34,
    max_value = 63,
  },
    Parameter {
    id = "env_egslope",
    name = "VSens Slope",
    number = 35,
    max_value = 63,
  },
   Parameter {
    id = "velsense_osc_change",
    name = "VSens OSC Chg",
    number = 75,
    max_value = 31,
  },
    Parameter {
    id = "decay_kbd_track",
    name = "Decay Kbd Track",
    number = 19,
    display_min_value = -64,
    display_max_value = 63 
  },
}  
local group_bender = Group {
  name = "BENDER",
  Parameter {
    id = "JoystickVCFMode",
    name = "Joystick VCF Mode",
    number = 41,
    items = {"Off","On"},
    item_values = {0,1},
  },
    Parameter {
    id = "pbrange",
    name = "Pitch Bend Range",
    number = 40,
    max_value = 12,
  },
}
local group_eq = Group {
  name = "EQ",
  Parameter {
    id = "bass",
    name = "Bass",
    number = 43,
    max_value = 12,
  },
   Parameter {
    id = "treble",
    name = "Treble",
    number = 42,
    max_value = 12,
  },
}
local group_ddlfreq = Group {
  name = "DDL MG FREQUENCY",
  Parameter {
    id = "mgafreq",
    name = "A",
    number = 44,
    max_value = 63,
  },
  Parameter {
    id = "mgbfreq",
    name = "B",
    number = 45,
    max_value = 63,
  },
}  
local group_oscmod = Group {
  name = "OSC MOD",
  Parameter {
    id = "mgselect",
    name = "MG Select",
    number = 67,
    items = {"Off","Osc1","Osc2","Both"},
    item_values = {0,1,2,3},
  },
   Parameter {
    id = "mgfreq",
    name = "MG Frequency",
    number = 68,
    max_value = 31,
  },
  Parameter {
    id = "mgintens",
    name = "MG Intensity",
    number = 69,
    max_value = 15,
  },
   Parameter { 
    id = "mgdelay",
    name = "MG Delay",
    number = 70,
    max_value = 15,
  },  
}

return SynthDefinition {
  id = "korg_dss1b",
  name = "Korg DSS1b",
  author = "Daniel",
  content_height = 510,
  delay_between_midi_messages = 10,
  sysex_message_template = {0xF0, 0x42, 0x30, 0x0B, 0x41, "nn", "vv", 0xF7},
  Section {
  
  name = "Main",
    group_osc1,
    group_osc2,
    group_oscmod,  
    group_vca,
    group_vcfmod, 
    group_vcf,
    group_eq, 

      
  },
  Section {
    name = "Delay",
     group_ddlfreq,
     group_ddl1,
     group_ddl2,
     group_autobend,
     group_bender,
     group_aftertouch,
     group_keyassign 
    
  }
}