tv_out->in = xmalloc(tv_out->nreg*tv_out->regsz);
tv_out->out = xmalloc(tv_out->nrout*tv_out->regsz);
for (i = 0; i < tv_out->nreg; i++) {
tv_out->in = xmalloc(tv_out->nreg*tv_out->regsz);
tv_out->out = xmalloc(tv_out->nrout*tv_out->regsz);
for (i = 0; i < tv_out->nreg; i++) {