addrmap top {
    default paritycheck;
    default sw=rw;
    default hw=na;

    reg my_reg {
        field {} f1[16] = 0;
        field {} f2[8] = 0;
        field {} f3 = 0;
    };

    my_reg r1 @ 0x000;
    my_reg r2[8] @ 0x1000;
};