Page of GC20-1834-0 As Updated Aug. 1, 1979 by TNL GN25-0486 Multiple Service Record File The Service Record File (SRF) device (7443 diskette) supported by VM/370 allows the enhanced CPEREP program to be independent of processor model
and EC level for the 3031, 3032, and 3033 processors. Each 303X processor has a 3036 console. The 3036 console has two operating
stations, designated as the operator's console and the service support
console. Each operating station contains an SRF device. The SRF contains "frames" that consist of format and conversion information used
to display machine or channel dependent logout data on the service
support console or on the EREP Edit output. CPEREP uses the frames to
format MCH and CCH records for the 3032: and 3033 Processors: The frames are read from the SRF device by VM/370, formatted as records, and
placed at the beginning of VM's error recording cylinders.
For a detailed description of CPEREP's use of SRF frames, refer to
the OLTSEP and Error Recording Guide.
A 3033 Attached Processor configuration has two 3036 consoles. Each
of the four operating stations contains an SRF device. VM/370 will
support the specification of multiple SRF devices at system generation
on the RIOGEN macro. Each time the VM/370 error recording cylinders are
formatted, an attempt will be made to access each SRF in the list, and
to read frames from the device and place them on the error recording
cylinders. CPEREP processing will match the error records generated on
the main or attached processor with the frame records from that
processor's SRF device. It is recommended that the SRF addresses
specified be those of the SRFs in the service support consoles. All SRF devices may be specified. However, CP processing will ignore
inaccessible SRF devices.
For a detailed description of the system generation definition of SRF devices, refer to VM/170 Planning and System §Ylg!. , SRL AND PROGRAM LOGIC PUBLICATIONS The following publications contain information on VM/370 support of
Multiple SRFs: GC20-1801 Planning and System Generation Guide GC20-1808 System Messages GC20-1809 OLTSEP and Error Recording Guide GC20-1821 Operating Systems in a Virtual Machine SY20-1884 Data Areas and Control Block Logic SY20-1886 System Logic and Problem Determination Guide -- Volume 1 1-30.2 IBM VM/370 Release 6 Guide

, , , Page of GC20-1834-0 As Updated Auge 1979 by TNL GN25-0486 3031 AP Extened Control Program Support
The Extended Control-Program Support for VM/370 the 3031 main processor and the 3031 attached
This function is a subset of the same as the
currently. available on the processors. (ECPS:VM/370) supports
processor environment.
previous ECPS: VM/370 At initialization, the machine implemented instruction level of the
two processors in a 3031 attached processor system is tested. If the
levels of these two processors are different, the CP Assist and Extended Virtual Machine Assist portions of the ECPS subset for the 3031 is
disabled on both the main and attached processor. Otherwise, the
special 3031 ECPS package is activated.
The specific subset of functions supported are: • Control Program Assist
FREE RETURN FRET SHAREDPAGE
LINK STECPSVM PTRLK TRANBRNG PTRUL TRANLOCK • Extended Virtual Machine Assist STPT TCH • Virtual In terval Timer
There are changes to the SET CPASSIST command and the QUERY CPASSIST command for attached processor support. 1 The SET command now allows
processor distinction in the 3031 attached processor environment. The QUERY response indicates which processor (main or attached) has the
function enabled. Trace table entries are also modified to reflect
instructions assisted by ECPS (bit 0) and whether the assist occurred on
the main or attached processor (bit 1). SRL AND PROGRAM LOGIC PUBLICATIONS The following publications contain information on VM/370 support for 3031 AP Extended Control Program. GC20-1801 Planning and System Generation Guide GC2(}-1806 Operator's Guide GC20-1807 System Programmer's Guide GC20-1821 Operating Systems in a Virtual Machine SY20-1884 Data Areas and Control Block Logic SY20-1886 System Logic and Problem Determination Guide --Volume 1 Section 1. Summary of Changes to the VM/370 System 1-30.3