addrmap top {
    reg {
        enum test_enum {
            zero = 2'b00;
            one = 2'b01;
            two = 2'b10;
            three = 2'b11;
        };
        field {
            sw = rw; hw = r;
            is_signed = false;
            encode = test_enum;
        } unsigned_enum[2] = 0;
        field {
            sw = rw; hw = r;
            is_signed;
            encode = test_enum;
        } signed_enum[2] = 0;
    } r1;
};