RF (IV) 3/15/72 RF (IV) NAME rf -- RF11-RS11 fixed-head disk file DESCRIPTION This file refers to the concatenation of both RS-11 disks. It may be either read or written, although writing is inherently very dangerous, since a file system resides there. The disk contains 2048 256-word blocks, numbered 0 to 2047. Like the other block-structured de- vices (TC, RK) this file is addressed in blocks, not bytes. This has two consequences: seek calls refer to block numbers, not byte numbers; and se- quential reading or writing always advance the read or write pointer by at least one block. Thus successive reads of 10 characters from this file actually read the first 10 characters from successive blocks. FILES /dev/rf0 SEE ALSO tc(IV), rk(IV) BUGS The fact that this device is addressed in terms of blocks, not bytes, is extremely unfortunate. It is due entirely to the fact that read and write pointers (and consequently the arguments to seek) are single-precision numbers.