Owner`s manual

CHAPTER 2
WHAT DOES A SYSTEM
INITIALIZATION FILE DO?
Later chapters will treat each of the points below in detail. Briefly, however, the system
initialization command file does the following:
Defines how many jobs will run on your computer, and gives them names.
Performs any initialization required by the memory boards in your computer.
Defines the terminals on your computer to the monitor by identifying what
Input/Output interface boards the terminals are connected to, what terminal driver
and interface driver programs to use for each terminal, what baud rate the
terminals use, etc.
Defines the disk drives on your computer by telling the monitor what driver
programs to use, defining bitmaps for the devices, and arranging physical
unit/logical device combinations.
Defines any special devices on your computer (such as video cassette recorders,
serial printers, etc.), telling the monitor what device driver programs to use for the
devices, and whether the devices may be shared.
Tells the monitor what to load into system memory.
Tells the monitor what terminals to attach to which jobs.
Allocates memory to jobs.
Performs optional procedures such as setting up printer spoolers, running special
programs, mounting disks, etc.
System Operator’s Guide to the System Initialization Command File, Rev. 03