tlm_drive
struct tlm_drive *td_next;
if (!(dp = tlm_drive(l, d))) {
if (!(dp = tlm_drive(*lib, d)))
if ((drive = tlm_drive(l, d)) != NULL) {
dp = tlm_drive(l, d);
dp = tlm_drive(lib, drv);
extern tlm_drive_t *tlm_drive(int, int);