addrmap vdc_if {
    name = "Video display controller";

    default hw = r;
    default sw = rw;
    default regwidth = 32;
    default precedence = hw;

    reg {
        name = "Control and status register";

        field {
            desc = "Enable video DAC output";
        } DACEN[0:0] = 0;

        field {
            desc = "Video DAC output is active";

            hw = w;
            sw = r;
        } DACON[1:1] = 0;

        field {
            desc = "Enable double buffering";
        } DOUBLEBUFF[2:2] = 0;
    } CTRL @ 0x00;

    reg {
        name = "Output resolution geometry";

        field {
            desc = "Vertical lines minus one";
        } LINES[15:0];

        field {
            desc = "Line length in words minus one";
        } LENGTH[31:16];
    } GEOMETRY @ 0x04;

    reg {
        name = "Buffer stream access and format";

        field {
            desc = "Horizontal stride";
        } HSTRIDE[15:0];
    } STREAM @ 0x08;

    reg {
        name = "Base address of the primary buffer";

        field {
            desc = "Base address in words";

            hw = rw;
            precedence = sw;

            we;
        } ADDR[31:2];
    } FRONT @ 0x0c;

    reg {
        name = "Back buffer";

        field {
            desc = "Base address in words";

            hw = rw;
            precedence = sw;

            we;
            swmod;
        } ADDR[31:2];
    } BACK @ 0x10;

    reg {
        name = "Retired back buffer";

        default hw = w;
        default sw = r;

        field {
            desc = "Base address in words";
        } ADDR[31:2];
    } RETIRE @ 0x14;
};