struct vectorised {
        bool isvector:1;
        int  vew:2;
        int  predidx:7;
        bool enabled:1;
    }

    struct vectorised fp_vec[32], int_vec[32];

    for (i = 0; i < len; i++) // from VBLOCK Format
       tb = int_vec if CSRvec[i].type == 0 else fp_vec
       idx = CSRvec[i].regkey // INT/FP src/dst reg in opcode
       tb[idx].elwidth  = CSRvec[i].elwidth
       tb[idx].regidx   = CSRvec[i].regidx  // indirection
       tb[idx].isvector = CSRvec[i].isvector // 0=scalar
       tb[idx].enabled  = true;