IBM System/370 145 Manual page 164

3330-series disk storage (Version 4 only}. Strings of 3330-series
drives attached via 3830 Storage Control and/or Integrated Storage
Control are supported for the same system control and system service
functions as is 2314 disk storage, including support by DOS POWER II.
That is, the 3330-series is supported as a system residence, system
input and system output device, and by the linkage editor, librarian,
and System utility Programs (370N-UT-491l. The DOS sort/Merge program
product (5143-SM1) includes support of the 3330-series as an input,
output, and work unit.
Data management (SAM, ISAM, DAM, QTAM) support of the 3330-series as
an I/O device, functionally identical to that available for the 2314, is
provided by Assembler 0 (14K variant). ANS Full COBOL Version 3 Release
2, ANS subset COBOL Release 2, PL/I Optimizing Compiler, FORTRAN IV
Library Option 1, and RPG II also support the 3330-series for functions
similar to those provided for the 2314.
The rotational position sensing facility is not supported. That is,
SET SECTOR and READ SECTOR commands are not included in 3330-series
channel programs. Block multiplexing is not supported, and a channel
with 3330-series drives connected operates in selector mode. Therefore,
only one data transfer channel program can be in operation on the
channel at a time. However, stand-alone seek operations can be
overlapped with one another and with one data transfer operation, as for
a 2314, when the seek overlap option is present in the DOS supervisor.
Sixteen-drive addressing is supported to accommodate the attachment
of two strings of drives to Model 2 of 3830 Storage Control or to
Integrated Storage Control.
The 2305 facility. The 2305 is not supported.
3211 Printer. This printer is supported :for the same functions as
the 1403 Printer. POWER II support of the 3211 is provided also. New
parameters are added to some of the existing Assembler Language macros
to support new features of the 3211. The 18 additional print positions
are supported by the Assembler Language, ANS Full COBOL Version 3, and
ANS
Subset COBOL. Forms Control Buffer and Universal Character Buffer
loading for the 3211 are handled in the same way. The DOS operating
system includes a standard image for the UCB and one for the FCB, which
are loaded at IPL. If a job step requires a different image, ·the user
must execute an IBM'-supplied buffer load utility program (SYSBUFLD)
as
a
previous job step in order to load the FCB and/or the UCB. No provision
has been made for loading the FCB or UCB during execution of a job step.
User-defined UCS images must
be
loaded from a core image library. FCB
images can
be
loaded from cards or a core image library.
If a command retry indication is present, the 3211 error recovery
routine supports retry of an operation that failed. This option must be
requested by the user in the
DTF for the 3211 Printer.
ASCII-mode tapes. The capability of processing ASCII-mode tapes on
the Model 145, using DOS, is provided by the follOwing program products:
• ANS Full COBOL Compi1er V3 and Object-Time Library
• ANS
Subset COBOL Compiler and Library
• PL/I Optimizing Compiler
• PL/I Transient and Resident Libraries
• FORTRAN IV Library Option 1
• ASCII Magnetic Tape Utilities
• Tape and Disk Sort/Merge
• RPG
II
An
initialize tape utility is provided that can be used to write an
ASCII (or EBCDIC) mode standard volume label on a tape. ASCII-mode
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A Guide to the IBM System/310 Model 145