affected by the ratio of virtual storage used to real storage available
SECTION 70: COMPARISON TABLES
These tables have been included for quick reference. The first compares hardware features of the System/360 Model 65 and System/370 Models 165. 165 II. and 168. The second compares OS MFT, MVT. VS1. and VS2 support of the Model 168.
82 A Guide to the IBM System/370 Model 168
10:05: COMPARISON TABLE OF HARDWARE FEATURES OF THE SYSTEM/360 MODEL 65 AND SYSTEM/310 MODELS ~, ~ II, AND ~
2. Decimal arithmetic Standard 3. Floating-point standard
arithmetic
4. Extended precision Not available floating-point
Hardware Feature
Hardware Feature
co
...
'"
00
Hardware Feature
IV. OPERATOR CONSOLE DEVICES
V. I/O DEVICES
00 certain instructions in ANS
Full COBOL Version 3 (CLCL.
Hardware Feature OS MFT and MVT b. LOAD REAL ADDRESS Not supported
PURGE TLB
RESET REFERENCE BIT SET CLOCK
COMPARATOR SET CPU TIMER STORE CLOCK
COMPARATOR STORE CPU TIMER STORE THEN AND
SYSTEM MASK STORE THEN OR
SYSTEM MASK
C. Interval timer Supported for timing facilities, except for time of day
D. Time of day clock Supported for time of day E. Clock comparator and CPU timer Not supported
F. Expanded machine check Supported by MCH interruptions
G. Monitoring feature supported by GTF and an Assembler mnemonic H. Program event recording
I. Interruption for SSM instruction
J. Compatibility features II. STORAGE
A. Real storage sizes (1024K to 4096K) B. Byte-oriented operands
C. Store and fetch protection
Not supported Not supported All are supported
All are supported Programmers can use the byte alignment hardware facility in Assembler programs
Store protect only is supported
All are supported Same as OS/VSl by the System Assembler
Same as MFT and MVT Not supported
Same as MFT and MVT supported for time of day Not supported supported for timing facilities
except for time of day Same as MFT and MVT Same as MFT and MVT Same as OS MFT and MVT Same as OS MFT and MVT Supported by Dynamic
Support System supported
All are supported
All are supported Same as MFT and MVT
store protect only is supported
Supported by Dynamic Support System
Supported
All are supported
All are supported Same as MFT and MVT
Store and fetch protection are supported for all regions
3: o
B. Block multiplexer and selector Supported ehannels
RPS and multiple requesting are supported. multiple requesting are supported.
INDEX (Sections 01 to 70)
address space, definition 31
alter/display mode for the 3066 Model 2 61 architecture design 1
ASCII/EBCDIC mode 7 basic control mode
compatibility with Systern/360 7 programming systems support 88-90 buffer row deletion 18
buffer storage 23-26 change bit 61
channel dual I/O bus 28
channel indirect data addressing 64 channel masking changes for EC mode 11 channel program translation 65
channel retry 18 channels 28
clock comparator 17,19 command retry 18
comparison table, Model 65, 165, 165 II, and 168 hardware features 83-81 comparison table, OS MFT, MVT, VS1,
and VS2 support of the Model 168 88-90 compatibility
BC mode with System/360 1 Model 165 with Model 168 8 control registers 10
control storage read-only 9,10 writable 10 CPU
access times 23 cooling 4
cycle time 10
extended logout area 19 cycle time
control storage 23 CPU 10
local storage 23 processor storage 21 CPU timer 11,19
OAT hardware (see dynamic address translation) dynamic address translation
addresses translated 61,62 functions 38-40
instruction nullification 63
segment table origin address saving 59 time to perform 56
translation lookaside buffer 56 translation process 56,58
translation tables 54 execution unit 10
extended control mode description 11-16
programming systems support 8 external page storage 49
A Guide to the IBM System/310 Model 168 91
features optional 30 standard 29
fixed processor storage locations model-dependent 14
model-independent 13 imprecise interruptions 10 indirect data address list 64 indirect data address word 64 interleaving 21
instruction nullification 63
Instruction processing Damage interruption 18 instruction unit 10
instructions buffering 10
changes to for EC mode 14 list of standard 29
Integrated Storage Control feature 81 internal performance 1
interruptions
machine check 18,19
page translation exception 50,58 segment translation exception 58 SSM instruction 15
interval timer 17
I/O devices for the Model 168 81 LOAD REAL ADDRESS instruction 56 local storage 10
logical storage 21 long-term fixing 51 machine check code 20
machine check interruptions 18,19 main storage (see processor storage) Model 165 II 9,10,11,16,18,24,29,31,56 monitoring feature, description 16
monolithic technology for processor storage 6 motor generator set 4
nonpaged mode of program operation 52 optional features 30
OS MFT and MVT 1,8
OS/VS1 and OS/VS2 1,8,19 page 49,53
page fault 50 paqe frame 49 page-in 49
_ _ _ _ _ ... .£- 'In
pOYC-VUL. -.:7
page replacement algorithm 51 page table 49,54,51
page translation exception 50,58 paged mode of program operation 52 paging 49
paging device 49
performance in a virtual storage environment 66-80 factors affecting 10
increasing 11
relationship to virtual storage size 73
92 A Guide to the IBM System/370 Model 168
processor storage access time 21 cycle time 21 reconfiguration 21 sizes 21
technology 6
program event recording
comparison with monitoring feature 16 description 15
programming systems support of the Model 168 OS MFT and MVT 88-90
OS/VS1 and OS/VS2 88-90 PSW
BC mode format 12 change for EC mode 11 EC mode format 12 PURGE TLB instruction 59 RAS features 18-19
read-only storage 9,10 real storage 35
reconfiguration, processor storage 21 reference bit 61
RESET REFERENCE BIT instruction 61 segment 49,53
segment table 49,54,57
segment table origin address saving 59 segment translation exception 58
SET CLOCK COMPARATOR instruction 17 SET CPU TIMER instruction 1-'
SET SYSTEM MASK instruction interruption 15 short-term fixing 51
slot 49
standard features 29 storage
buffer 23 control 10
external page 49 interleaving 21 local 10
processor (main) 21 protect key expansion 12 real 35
reconfiguration 21 ripples 23
virtual (See virtual storage) storage control unit 21
storage protect key 12,61
STORE CLOCK COMPARATOR instruction 17 STORE CPU TIMER instruction 11
store status function 29
STORE THEN AND SYSTEM MASK instruction 16 STORE THEN OR SYSTEM MASK instruction 16 STO-stack 59
system console 4,29,61 system highlights 1-3
system space requirements 4 system technology 5,6
thrashing condition 70
translation lookaside buffer 56 virtual equals real mode 52
Virtual Machine Facility/370 1,8,40
A Guide to the IBM System/370 Model 168 93
virtual machines 40 virtual storage
advantages 41-41 definition 35 organization 53 need for 31
relationship between size and performance 13 resources required to support 61
virtual storage address fields 55 virtual storage page 48
writable control storage 10 3066 Model 2 System Console 4,29
3061 Model 2 Power and Coolant Distribution Unit 4
94 A Guide to the IBM System/310 Model 168