MPE/iX Quick Reference Guide (32650-90881)

Chapter 3 89
Intrinsics Descriptions
Descriptions of the Intrinsics Available in MPE/iX
FSETMODE
NM and CM callable.
Controls the following access modes of files or devices:
• Issuing carriage return and line feed to terminal after a terminal read.
• Reporting tape automatic error recovery.
• Guaranteeing chronological order of user program write requests.
• Blocking program execution until physical completion of write requests.
I16V U16V
FSETMODE( filenum,modeflags );
FSPACE
NM and CM callable.
Moves a record pointer forward or backward on a magnetic tape or disk file, spaces
physical records on magnetic tape files and logical records on disk files.
I16V I16V
FSPACE( filenum,displacement );
FUNLOCK
NM and CM callable.
Dynamically unlocks a file's global resource identification number (RIN) that was locked
with the FLOCK intrinsic.
I16V
FUNLOCK( filenum );
FUPDATE
NM and CM callable.
Updates (writes) a logical record in a disk file.
I16V UDS I16V
FUPDATE( filenum,buffer,length );
FWRITE
NM and CM callable.
Writes a logical or physical record or portion of a record from the stack to a file on any
device.
I16V UDS I16V U16V
FWRITE( filenum,buffer,length,controlcode );