MEMORY
{
    A: start = 0, size = 8, file = %O, fill = yes, fillval = $33;
    B: start = 8, size = 8, file = %O, fill = yes, fillval = $44;
}
SEGMENTS
{
    A:  load = A, type = ro;
    B:  load = B, type = ro;
    AO: load = A, type = overwrite, start = 6;
    BO: load = B, type = overwrite, start = 8+6;
}