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A control store is the part of a CPU's control unit that stores the CPU's microprogram. It is usually accessed by a microsequencer. A control store implementation whose contents are unalterable is known as a Read Only Memory (ROM) or Read Only Storage (ROS); one whose contents are alterable is known as a Writable Control Store (WCS).

Attributes	Values
rdfs:label	Control store (en)
rdfs:comment	A control store is the part of a CPU's control unit that stores the CPU's microprogram. It is usually accessed by a microsequencer. A control store implementation whose contents are unalterable is known as a Read Only Memory (ROM) or Read Only Storage (ROS); one whose contents are alterable is known as a Writable Control Store (WCS). (en)
sameAs	Control store
dbp:wikiPageUsesTemplate	dbt:CPU_technologies dbt:Cite_book dbt:Cite_journal dbt:Reflist dbt:Wikibooks
Subject	Firmware Instruction processing
Link from a Wikipage to an external page	http://www.bitsavers.org/pdf/mit/whirlwind/R-series/R-127_Whirlwind_I_Computer_Block_Diagrams_Volume_1_Sep47.pdf http://www.bitsavers.org/pdf/mit/whirlwind/R-series/R-127_Whirlwind_I_Computer_Block_Diagrams_Volume_2_Sep47.pdf http://doi.ieeecomputersociety.org/10.1109/MAHC.1988.10039 https://web.archive.org/web/20210815014917/http:/bitsavers.org/pdf/mit/whirlwind/R-series/R-127_Whirlwind_I_Computer_Block_Diagrams_Volume_1_Sep47.pdf https://web.archive.org/web/20210815015419/http:/bitsavers.org/pdf/mit/whirlwind/R-series/R-127_Whirlwind_I_Computer_Block_Diagrams_Volume_2_Sep47.pdf
gold:hypernym	Part
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/Control_store?oldid=1065718368&ns=0
Wikipage page ID	6559 (xsd:integer)
page length (characters) of wiki page	13142 (xsd:nonNegativeInteger)
Wikipage revision ID	1065718368 (xsd:integer)
Link from a Wikipage to another Wikipage	Programmable logic array Very Large Scale Integration X86 Whirlwind I Xeon Xerox Star Burroughs B1700 Central processing unit FreeBSD Firmware Instruction processing Digital Equipment Corporation Direct-access storage device PDP-10 PDP-11 Power-on reset Lisp machine Clock rate Clock signal Control unit Microcode Microsequencer Minicomputer Data General Eclipse MV/8000 Flash memory IBM System/360 IBM System/360 Model 30 IBM System/360 Model 40 IBM System/360 Model 50 IBM System/360 Model 65 IBM System/360 Model 67 IBM System/370 IEEE Annals of the History of Computing Pentium Pro Symbolics Field-effect transistor HP 2100 Institute of Electrical and Electronics Engineers Intel Core 2 Transformer read-only storage VAX Varian Data Machines Mentec International Ltd MIT Laboratory for Information and Decision Systems Multiprocessing Race condition Video RAM (dual-ported DRAM) Read-only memory Read–write memory Reconfigurable computing Rekursiv dbr:BCROS dbr:Cjip dbr:Imsys
has abstract	A control store is the part of a CPU's control unit that stores the CPU's microprogram. It is usually accessed by a microsequencer. A control store implementation whose contents are unalterable is known as a Read Only Memory (ROM) or Read Only Storage (ROS); one whose contents are alterable is known as a Writable Control Store (WCS). (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Control_store
is rdfs:seeAlso of	Burroughs B1700
is Wikipage redirect of	Writable control store Writable microcode Patchable microcode
is Link from a Wikipage to another Wikipage of	NVAX Nord-100 Burroughs B1700 Glossary of computer hardware terms Diode matrix History of general-purpose CPUs Computer program High-level language computer architecture History of the floppy disk Assembly language Microcode Microsequencer Data General Firmware IBM System/360 Model 85 IBM System/370 Model 148 IBM System/38 Index of computing articles HP FOCUS Instruction set architecture

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