SEEK (II) 3/15/72 SEEK (II) NAME seek -- move read/write pointer SYNOPSIS (file descriptor in r0) sys seek; offset; ptrname / seek = 19. DESCRIPTION The file descriptor refers to a file open for reading or writing. The read (resp. write) pointer for the file is set as follows: if ptrname is 0, the pointer is set to offset. if ptrname is 1, the pointer is set to its current location plus offset. if ptrname is 2, the pointer is set to the size of the file plus offset. SEE ALSO -- DIAGNOSTICS The error bit (c-bit) is set for an undefined file descriptor. BUGS A file can conceptually be as large as 2**20 bytes. Clearly only 2**16 bytes can be addressed by seek. The problem is most acute on the large special files.