New Features And Differences; Msos 5.1 New Features - Control Data 3170 Installation Handbook

1.4 NEW FEATURES AND DIFFERENCES
The following sections list the new features incorporated in MSOS 5. 1 and its product
set. differences between MSOS 4.2 and 5.0 and between MSOS 5.0 and 5. 1, which may
require modification of deck structures or recoding of programs, and changes in opera-
ting characteristics between MSOS 4.2 and 5. 1.
1.4.1 MSOS 5.1 NEW FEATURES
1. An assembly option, CLASSR. allows the interchange of class-R disk packs and the
files contained on the packs between any MSOS systems with the option selected.
In addition, the pack structure is compatible with the MASTER Operating System.
2. File labels on class-R packs are updated automatically when class-R files are used.
3. The online processor updates MSD, ID, and LABEL files when class - R packs are
placed online or taken offline.
4. Two new control cards have been added. The RRAT card functions are the same as
the RAT card. except that they define the resident allocation table as class R. The
RONL card requests the operator to mount a specified class-R pack.
5. Interrupt modes have been modified to allow both PI and P2 real-time interrupt
selection and to prevent reentrant use of the register save area table.
6. The CONTROL DATA@: 580 Line Printer has been added to the list of available units.
7. For the ALLOCATE and EXPAND functions, the default device type is the first
entry in the RAT, and the system device is used only as a last resort. provided
that the RRAT is not in effect.
8. The job control processor executes in bank 1 of extended core systems.
9. Seven additional processors have been added.
TIME
DATE
LDABSV50
PTIOV50
DRIVPT
MISC3
JOBCTL24
Called by COMPASS and ANSI FOR TRAN to obtain the
current time of day (deck Q. TIME on the COSY file)
Called by COMPASS and ANSI FORTRAN to obtain the
current date (deck Q. DATE on the COSY file)
Called by COMPASS to load and execute absolute tasks
from a file (SEPOINT in deck EXEC)
Paper tape user interface used in place of CIO calls to
read or write on paper tape (deck PTIOV50 on COSY file)
New paper tape driver (deck DRIVPT on COSy file)
Class- R file manager (deck MISC3 on COSy file)
RONL control card processor (deck JOBCTL24 on COSy
file)
10. Calls to the manual interrupt processor have been improved.
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