32v 1m mknod
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MKNOD(1M) UNIX Programmer's Manual MKNOD(1M)
mknod - build special file
/etc/mknod name [ c ] [ b ] major minor
_M_k_n_o_d makes a special file. The first argument is the _n_a_m_e of the entry. The second is b if the special file is block-type (disks, tape) or c if it is character-type (other devices). The last two arguments are numbers specifying the _m_a_j_o_r device type and the _m_i_n_o_r device (e.g. unit, drive, or line number).
The assignment of major device numbers is specific to each system. They have to be dug out of the system source file _c_o_n_f._c.