Files for linkage editor processing

You need the following files for linkage editor processing. Table 1 summarizes the function, and permissible device types, for each file.

Table 1. Files used for link-editing
File	Type	Function	Permissible Device Types
SYSIPT¹	Input	Additional object module input	Card readerMagnetic tapeDirect access
SYSLNK	Input	Object module input, normally the output of the assembler	Direct access
SYSLST²	Output	Diagnostic messagesInformative messagesLinkage editor map	PrinterMagnetic tapeDirect access
SYSLOG	Output	Operator messages	Display console
SYSRDR	Input	Control statement input	Card readerMagnetic tapeDirect access
IJSYS01 (SYS001)	Work file	Linkage editor work file	Direct access
User-specified Sublibrary	Library	Catalog sublibrary for the phase³ External reference and INCLUDE statement resolution⁴	Direct access
Notes: ¹ Object modules read from SYSIPT are written to SYSLNK ² If not provided, messages are written to SYSLOG ³ Required if the phase is to be cataloged ⁴ Required for additional object module input