addrmap top {
    reg {
        field {
            sw=rw; hw=na;
        } hw_enable[7:0] = 0xFF;

        field {
            sw=rw; hw=na;
        } hw_mask[15:8] = 0x00;

        field {
            sw=rw; hw=na;
        } hw_clr[16:16] = 0;

        field {
            sw=rw; hw=na;
        } hw_set[17:17] = 0;

        field {
            sw=rw; hw=na;
        } hw_we[18:18] = 0;

        field {
            sw=rw; hw=na;
        } hw_wel[20:20] = 1;
    } hw_ctrl;


    reg {
        field {
            sw=r; hw=w;
            we; hwclr; hwset;
        } f[7:0] = 0x11;
    } r1;
    r1.f->hwenable = hw_ctrl.hw_enable;


    reg {
        field {
            sw=r; hw=w;
            we; hwclr; hwset;
        } f[7:0] = 0x22;
    } r2;
    r2.f->hwmask = hw_ctrl.hw_mask;


    reg {
        field {
            sw=rw; hw=w;
        } f[7:0] = 0x33;
    } r3;
    r3.f->hwenable = hw_ctrl.hw_enable;
    r3.f->hwclr = hw_ctrl.hw_clr;
    r3.f->hwset = hw_ctrl.hw_set;
    r3.f->we = hw_ctrl.hw_we;

    reg {
        field {
            sw=rw; hw=w;
        } f[7:0] = 0x44;
    } r4;
    r4.f->wel = hw_ctrl.hw_wel;

    reg {
        signal {} f_next_value[8];
        signal {} f_we;
        field {
            sw=rw; hw=w;
            next = f_next_value;
            we = f_we;
        } f[7:0] = 0x55;
    } r5;
};