if ((muram[fm_idx].alloc + size) >= muram[fm_idx].top) {
muram[fm_idx].alloc = save;
printf("%s: run out of ram.\n", __func__);
if ((muram[fm_idx].alloc + size) >= muram[fm_idx].top) {
muram[fm_idx].alloc = save;
printf("%s: run out of ram.\n", __func__);