IBM ESA/370 instruction set

E843960

CISC instruction set architecture IBM mainframe architecture computer instruction set architecture

The IBM ESA/370 instruction set is a mainframe computer architecture’s machine-language instruction set that extended IBM’s System/370 design with enhanced addressing and system capabilities for Enterprise Systems Architecture.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
IBM ESA/370 architecture	1
IBM ESA/370 instruction set canonical	1
IBM System/370 instruction set	1

How this entity was disambiguated

This entity first appeared as the object of triple T10155643 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: IBM ESA/370 instruction set
Context triple: [IBM 3090, compatibleWith, IBM ESA/370 instruction set]

A. IBM POWER instruction set
The IBM POWER instruction set is a RISC-based computer architecture developed by IBM for its high-performance POWER processors used in servers, workstations, and supercomputers.
B. IBM ESA/390 ISA
IBM ESA/390 ISA is a mainframe instruction set architecture that evolved from IBM’s System/370 line, supporting 31-bit addressing and advanced enterprise computing features used in IBM System/390 systems.
C. VM/370
VM/370 is IBM's pioneering virtual machine operating system that allowed multiple independent OS environments to run concurrently on System/370 mainframe hardware.
D. IBM System/370
IBM System/370 is a family of IBM mainframe computers introduced in the 1970s that extended and modernized the System/360 architecture while maintaining backward compatibility.
E. IBM System/360
IBM System/360 is a landmark family of mainframe computers introduced in the 1960s that standardized computer architecture and revolutionized business and scientific computing.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: IBM ESA/370 instruction set
Target entity description: The IBM ESA/370 instruction set is a mainframe computer architecture’s machine-language instruction set that extended IBM’s System/370 design with enhanced addressing and system capabilities for Enterprise Systems Architecture.

A. IBM POWER instruction set
The IBM POWER instruction set is a RISC-based computer architecture developed by IBM for its high-performance POWER processors used in servers, workstations, and supercomputers.
B. IBM ESA/390 ISA
IBM ESA/390 ISA is a mainframe instruction set architecture that evolved from IBM’s System/370 line, supporting 31-bit addressing and advanced enterprise computing features used in IBM System/390 systems.
C. VM/370
VM/370 is IBM's pioneering virtual machine operating system that allowed multiple independent OS environments to run concurrently on System/370 mainframe hardware.
D. IBM System/370
IBM System/370 is a family of IBM mainframe computers introduced in the 1970s that extended and modernized the System/360 architecture while maintaining backward compatibility.
E. IBM System/360
IBM System/360 is a landmark family of mainframe computers introduced in the 1960s that standardized computer architecture and revolutionized business and scientific computing.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	CISC instruction set architecture ⓘ IBM mainframe architecture ⓘ computer instruction set architecture ⓘ
architectureGeneration	successor to System/370 ⓘ
backwardCompatibleWith	IBM System/370 programs ⓘ
compatibleWith	System/370 instruction set ⓘ linked to: IBM System/370
designedFor	IBM mainframe computers ⓘ linked to: IBM mainframe enterprise computing ⓘ
developedBy	IBM ⓘ
extends	24-bit addressing of System/370 ⓘ IBM System/370 instruction set ⓘ linked to: IBM ESA/370 instruction set
follows	IBM System/370 instruction set ⓘ
hasAddressSize	31 bits ⓘ
hasRegisterCount	16 general-purpose registers ⓘ 4 floating-point registers (architecturally, 8 logical) ⓘ
hasWordSize	32 bits ⓘ
influenced	IBM ESA/390 instruction set ⓘ linked to: IBM ESA/390 ISA
introducedFeature	enhanced system control instructions ⓘ extended addressing facilities ⓘ improved support for large virtual address spaces ⓘ
marketedAs	Enterprise Systems Architecture/370 ⓘ linked to: IBM Enterprise Systems Architecture
partOf	IBM ESA/370 architecture ⓘ linked to: IBM ESA/370 instruction set IBM Enterprise Systems Architecture ⓘ
primaryUse	batch processing workloads ⓘ commercial transaction processing ⓘ
supports	31-bit addressing ⓘ I/O control instructions ⓘ branch and test instructions ⓘ channel-program control ⓘ control register manipulation instructions ⓘ diagnostic and service instructions ⓘ fixed-point arithmetic instructions ⓘ floating-point arithmetic instructions ⓘ interrupt handling instructions ⓘ logical and shift instructions ⓘ multiple addressing modes ⓘ privileged instructions ⓘ problem-state instructions ⓘ program status word manipulation ⓘ register-to-register instructions ⓘ storage protection mechanisms ⓘ storage-to-register instructions ⓘ storage-to-storage instructions ⓘ supervisor-state instructions ⓘ virtual memory management ⓘ virtual storage ⓘ
usedIn	IBM 3090 mainframe family ⓘ linked to: IBM 3090 IBM ES/9000 mainframe family ⓘ linked to: IBM ES/9000

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

IBM 3090 → compatibleWith → IBM ESA/370 instruction set ⓘ

IBM ESA/370 instruction set → partOf → IBM ESA/370 architecture ⓘ

linked to: IBM ESA/370 instruction set

IBM ESA/370 instruction set → extends → IBM System/370 instruction set ⓘ