ipc_unit          709 src/dps8/dps8_cable.c                            & ipc_unit [unit_idx], dsk_iom_cmd); // XXX mtp_iom_cmd?
ipc_unit         1629 src/dps8/dps8_disk.c #define IPC_UNIT_IDX(uptr) ((uptr) - ipc_unit)
ipc_unit         1637 src/dps8/dps8_disk.c UNIT ipc_unit[N_IPC_UNITS_MAX] = {
ipc_unit         1738 src/dps8/dps8_disk.c     ipc_unit,              /* Units               */
ipc_unit           23 src/dps8/dps8_disk.h extern UNIT ipc_unit [N_IPC_UNITS_MAX];