IBM System/370 Guide

• Support of the interval timer and time of day clock
• Support of the new instructions by Assembler F
• The required interface to the integrated emulator specified at
system generation, if any
If integrated emulator programs are to be used, the steps outlined
in Section 40 must be taken in order to convert from current emulation
procedures to Model 165 emulation.
EXISTING PROCESSING PROGRAMS AND JOB CONTROL
IBM-supplied OS program products and Type I processing programs
(language translators, utilities. etc.) will run on the System/310
Model 165 without alteration. Subject to the exceptions stated in
Section 10:05, user-written OS processing programs that operate on
Models 65 and 15 will also execute correctly on the Model 165.
Modification and reassembly of existing user-written OS processing
programs is not required unless new processing is to be added or
existing processing is to be altered.
Modification of the job control for these processing programs is
required if I/O device type is changed, say from 1403 to 3211. if
direct access space allocation changes. if a DCB parameter is to be
altered. etc. I/O device type changes do not necessitate processing
program alterations unless device-dependent macros have been used,
data organization is changed, or a DCB parameter specified in the
program is to be altered.
CONVERSION TO 3330 AND 2305 FACILITIES
Conversion from current direct access devices to the 3330 facility
involves the same procedures as are required now to change from one
disk device to another, say from 2311's to a 2314. Existing disk data
sets can be placed on 3336 Disk Packs by using an IBM-supplied utility
in most cases. Assuming that data organization is not changed,
consideration should be given to altering the block size used and the
amount of space allocated to the data set. The location and size of
each type area in an ISAM data set should be altered, taking into
account 3336 Disk Pack characteristics. These changes can be made
in job control statements.
Sequentially organized data sets (processed by QSAM or BSAM) and
partitioned data sets can be copied from the source direct access
device directly to the 3330 facility by use of the OS IEHMOVE utility.
Or they can be copied to tape and then to the 3330 facility by use
of the same utility (if the source direct access device type is not
present in the Model 165 configuration).
Indexed sequential data sets can be copied directly from the source
direct access device to the 3330 facility by use of the IEBISAM utility.
Alternately, they can be unloaded to tape and then reloaded by means
of the same utility. Changes to space allocation, etc., can be made
via job control statements.
Direct organization (BDAM) data sets can be copied on a track-to-
track basis from the source direct access device to the 3330 facility
by using IEHMOVE or copied to tape and then to the 3330 facility.
If more records are to be placed on a 3330 track than are on a source
device track, the existing reorganization program can be used to
transfer the data to the 3330 facility, and the program may have to
be changed. Reprogramming of the randomizing routine used in the
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IBM System/370 Specifications

General

Brand	IBM
Model	System/370
Category	Server
Language	English