About: Exec (Amiga)

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Exec is the kernel of AmigaOS. It is a 13 KB multitasking microkernel which enabled pre-emptive multitasking in as little as 256 KB of memory (as supplied with the first Amiga 1000s). Exec provided functions for multitasking, memory management, and handling of interrupts and dynamic shared libraries.

Attributes	Values
rdf:type	Thing software schema:CreativeWork work wikidata:Q386724 Software yago:WikicatOperatingSystemKernels yago:Kernel113137010 yago:NaturalObject100019128 yago:Object100002684 yago:PhysicalEntity100001930 yago:PlantPart113086908 yago:Whole100003553
rdfs:label	Exec (Amiga) (en)
rdfs:comment	Exec is the kernel of AmigaOS. It is a 13 KB multitasking microkernel which enabled pre-emptive multitasking in as little as 256 KB of memory (as supplied with the first Amiga 1000s). Exec provided functions for multitasking, memory management, and handling of interrupts and dynamic shared libraries. (en)
foaf:name	Exec (en)
name	Exec (en)
dcterms:subject	Operating system kernels Amiga APIs CBM software Microkernels
Wikipage page ID	16906611 (xsd:integer)
Wikipage revision ID	1092162696 (xsd:integer)
Link from a Wikipage to another Wikipage	Carl Sassenrath PowerPC Pre-emptive multitasking Message passing Memory protection Operating system kernels Hyperion Entertainment Dynamic linker Library (computing) Proprietary software Command-line interface Commodore Amiga Computer multitasking Memory management Motorola 68000 Motorola 68000 series Linus Torvalds Linux kernel Closed source Kernel (operating system) Microkernel Address space Amiga AmigaOS AmigaOS 4 Amiga 1000 Exception handling Central processing unit Source code Round-robin scheduling Interrupt Atari TOS Amiga APIs CBM software Microkernels Kibibyte SunOS Inter-process communication Operating system Random-access memory Shared libraries Memory management unit Scheduling (computing)
Link from a Wikipage to an external page	https://web.archive.org/web/20100624020307/http:/www.cunningham-lee.com/misc/amiga_exec.html
sameAs	Exec (Amiga) Exec (Amiga) Exec (Amiga) Exec (Amiga) Exec (Amiga)
source model	Closed source
ui	Command-line interface
update model	Compile from source code (en)
working state	Current (en)
dbp:wikiPageUsesTemplate	dbt:Infobox_OS dbt:Portal dbt:Reflist dbt:Short_description dbt:Start_date_and_age dbt:URL dbt:AmigaOS dbt:Microkernel
developer	Carl Sassenrath
family	AmigaOS
kernel type	Microkernel
language	English (en)
latest release date	2021-01-12 (xsd:date)
latest release version	4.100000 (xsd:double)
license	Proprietary software
released	1985-07-23 (xsd:date)
supported platforms	Motorola 68000 series Amiga
has abstract	Exec is the kernel of AmigaOS. It is a 13 KB multitasking microkernel which enabled pre-emptive multitasking in as little as 256 KB of memory (as supplied with the first Amiga 1000s). Exec provided functions for multitasking, memory management, and handling of interrupts and dynamic shared libraries. It acts as a scheduler for tasks running on the system, providing pre-emptive multitasking with prioritized round-robin scheduling. Exec also provides access to other libraries and high-level inter-process communication via message passing. Other comparable microkernels have had performance problems because of the need to copy messages between address spaces. Since the Amiga has only one address space, Exec message passing is quite efficient. The only fixed memory address in the Amiga software (address 4) is a pointer to exec.library, which can then be used to access other libraries. Exec was designed and implemented by Carl Sassenrath. (en)
marketing target	AmigaOS
gold:hypernym	Kernel
prov:wasDerivedFrom	wikipedia-en:Exec_(Amiga)?oldid=1092162696&ns=0
page length (characters) of wiki page	7012 (xsd:nonNegativeInteger)
latest release date	2021-01-12 (xsd:date)

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