IBM System/370 145 Reference Summary page 130

Byte Bit
SYS - 05 (Also OD, 1D,2D,3D,15,25,35)
0
Machine-Check Interrupt Pending
1 Retry Routine
2 Machine Check Mark
0
3 SysO DOC Console (2)
4 LOG Present
5
'Sub-Block Protection Mode
6
ISelector Channel Start 1/0 Latch
7
Force Module 0 to Local Storage
.control Storage (LSCS) RS011
0
Enable Clear Switch
1
IMPL
2
Console-File Wait Bit
1
3 !sys 1 Meter Switch in CE Mode
4-~
00 = Unassigned
01 = Power On Reset
10 = Subsystem Load
,11 =System Load
6
!Error In Stop Word
7
1
1nstruction Processing Lath
RS012
0
Address Contents
1
CPU Interruption Force
2
SAR Interruption Force (Monitor)
2
3 Sys2 PSW Restart
4
EVA Latch
5
System Control Interruption
6
Timer Interruption Force
7
Reserved For Priority Interrupt
RS013 ·
0
Machine Check Priority Operation
1
Retry Priority Operation
2
CPU High-Priority Operation
3
3 H-Reg SX 1,2, and 3, or IFA High-Priority
Operation
4
SX2,3
(If
IFA Installed)
SX4 Only
(If
Installed)
5
Multiplexer Channel
6
IFA Low-Priority Operation
7
Store/Display and Logout
RH022
Ill
11.6