addrmap top {
    reg {
        field {
            sw=r; hw=r; counter;
            incrthreshold;
            decrthreshold;
        } count[4] = 0;
    } threshold_via_bool @ 0x0;


    reg {
        field {
            sw=r; hw=r; counter;
            incrthreshold = 10;
            decrthreshold = 5;
        } count[4] = 0;
    } threshold_via_const @ 0x4;


    reg {
        field {
            sw=r; hw=r; counter;
        } count[4] = 0;
    } threshold_via_ref @ 0x8;

    reg {
        field {
            sw=rw; hw=na;
        } min[4] = 0x4;
        field {
            sw=rw; hw=na;
        } max[4] = 0xB;
    } threshold_control @ 0xC;
    threshold_via_ref.count -> decrthreshold = threshold_control.min;
    threshold_via_ref.count -> incrthreshold = threshold_control.max;
};