IBM System/370 145 Manual page 233

data can be printed on the console (using display mode) or printed
out with the stand-alone
SERllW
program. The operator can re-IPL and
attempt to continue operations or the CE can perform diagnostic
procedures.
• Any
control program that con1t.ains a recovery routine will ent.er the
routine and attempt execution.
As
stated in section 10:05, these
routines access model-depend4~nt data and will not operate correctly.
In addition, the logout data stored when the interruption occurred
will have destroyed the code located in locations 128 to 511.
Results are unpredictable.
Therefore" control programs containing non-Model 145 recovery
routines should be run with the :~ystem set to stop after logging when
machine checks occur.
For the following reasons, i t is advantageous for Model '145 users to
install an operating system that includes recovery management support
designed specifically for the Model 145:
• The number of re-IPL's
neces~:;ary
because of machine malfunctions can
be
reduced. Many hardware eJrrors can be corrected either by Model
145 hardware recovery procedures or RMS routines. The latter ensure
the continuation of system operation whenever possible if the error
cannot be corrected. This in particularly important during online
operations. In Model 145 syntems without RMS routines, recovery is
provided only for correctablE~ CPU errors and single-bit processor
and control storage errors. Other errors will necessitate a re·IPL.
• Status information recorded by
RMS
routines will assist the customer
engineer in the diagnosis of machine malfunctions. This data will
be of greatest benefit in diagnosing intermittent errors.
• DOS users who install a DOS nupervisor that includes Model 145 RMS
will also have the advantagefi of integrated emulation. {CS/30 and
CS/40 cannot be executed on a Model 145.)
• Versions of OS control programs that include Model 145 RMS are the
only ones that include support. of new Model 145 CPU features, block
multiplexer channels, new dil~ect access devices, and integrated
emulators.
A Guide to the IBM System/370 Modlel 145
223