IBM System/370 145 Manual page 229

I
executed on a Model 40
0]:'
50, the alternate library should be
used ..
Whenever a new program that is to execute on both systems is added to
a library or if the Model 145 hardware configuration changes, the user
must consider whether or not polrtability is affected. (Not~ that
program products are portable fl::-om one system to another only under
special licensing agreements.)
60: 25 TRANSITION TO DOS VERSIOt~
!
A system generation must be performed using DOS Release 25 Extended,
26, or 27 in order to obtain a ~;upervisor that supports new Model 145 Be
mode features. Restoration of i:he OOS Version 3 (Releases 25 Extended
and 26) distribution tapes to disk, and generation of a DOS Version 3
supervisor can be done on a Sys1:em/360 or a System/370 model to generate
a Version 3 supervisor for a Sy::;tem/ 370 or a System/360 model.
Restoration of the DOS Version I~ (Release 27) distribution tapes to
disk, and generation of a DOS VE~rsion 4 supervisor can be done on a
System/370 model only and no1; on any System/360 model. A DOS· Version 4
supervisor supports System/310 models only and will not operate on a
System/360.
The existing system generation job stream can be used, modified to
reflect the Model 145 hardware <::onfiguration and the use of integrated
emulator programs, as appro.pria1:e. Additional supervisor options can
be
selected as well.
A DOS Version 4 operating system generated for the Model 145 includes
the following:
• MCAR and CCH routines to handle expanded machine check
interruptions. RMSR is inc]Luded t9 handle error recording and OLTEP
is present also (unless explicitly excluded).
• Support of the new I/O .devi<:es (3211 Printer, 3330-series disk
storage, 3803/3420 tape sub~;ystem, 3411/3410 tape subsystem, 3505
card reader, 3525 card punch) and the new Model 145 console
specified
• Support of the interval
timE~r
and/or the time of day clock, if
requested
• Support of certain new
SystE~mI'370
instructions by Assembler D .( 14K
variant>
• The required interface to integrated emulator programs
In general, the new supervisor will be larger than the one currently
in use because of the automatic inclusion of MCAR, CCH, RMSR, and OLTEP
routines and user selection! of additional options. (The minimum DOS
Version 4 supervisor size for the Model 145 is 14K.) This increase will
be less for DOS supervisors thai: currently contain the optional MCRR,
OBR, and SDR routines. A large]~ supervisor and the availability of
additional processor storage in the Model 145 will cause partition
starting addresses to change.
'~herefore,
existing user-written,
nonrelocatable DOS programs havE~ to be link-edited relative to the new
partition starting addresses and placed in a new core image library. If
relocatable modules for these nonrelocatable programs are not available,
reassembly of the source modules, as well as link editing of the
resulting relocatable modules, is required. Existing user-written,
self-relocatable DOS program phases can be copied directly from the old
core image library to a new one •.
A Guide to the IBM System/310 Model 145 219