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Revision as of 22:47, 10 October 2009 edit Guy Harris (talk \| contribs) Extended confirmed users 74,169 edits So who suggests that DOS/360 was version 6 of BOS/360? ← Previous edit		Latest revision as of 03:57, 1 January 2024 edit undo BD2412 (talk \| contribs) Autopatrolled, IP block exemptions, Administrators 2,370,259 edits m →‎Origin: clean up spacing around commas and other punctuation fixes, replaced: ,p → , p Tag: AWB
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Line 1: {{Short description\|Early IBM System/360 operating system}} ~~{{Cleanup\|date=January 2007}}~~ {{Infobox OS ~~{{Unreferenced\|date=January 2007}}~~ \| name = Basic Operating System/360 (BOS/360)<!-- Name of program or distribution --> \| logo = IBM logo.svg \| logo caption = \| logo size = 120px \| logo alt = \| screenshot = <!-- filename only (no wikilink, no Image:/File:) --> \| caption = \| screenshot_size = \| screenshot_alt = \| collapsible = \| version of = <!-- For articles about releases of operating systems ONLY --> \| developer = [[IBM]] General Products Division (GPD)<!-- Name of main developer or sponsor--> \| family = <!-- "Unix-like" or "Microsoft Windows" --> \| working state = Discontinued<!-- "Current", "Discontinued" (operating systems), or "No longer supported" (releases) --> \| source model = <!-- "Open source", "Closed source", or "Shared source" --> \| released = {{Start date and age\|1965\|10}} \| discontinued = <!-- DON'T use this for articles about releases of operating systems --> \| RTM date = <!-- {{Start date and age\|YYYY\|MM\|DD\|df=yes/no}} ONLY for articles about OS releases --> \| GA date = <!-- {{Start date and age\|YYYY\|MM\|DD\|df=yes/no}} ONLY for articles about OS releases --> \| latest release version = \| latest release date = \| latest preview version = \| latest preview date = <!-- {{Start date and age\|YYYY\|MM\|DD\|df=yes/no}} --> \| marketing target = [[IBM mainframes\|IBM mainframe computers]] \| programmed in = \| language = [[English language\|English]]<!-- Supported human languages (English, French, Italian, Arabic, ...) --> \| update model = <!-- APT, Windows Update, etc. --> \| package manager = <!-- dpkg, rpm, Windows installer, etc. --> \| supported platforms = [[IBM System/360\|System/360]]<!-- IA-32, x64, Itanium, ARM, etc. --> \| kernel type = <!-- Hybrid, Monolithic, Microkernel, Exokernel, Nanokernel, etc. --> \| userland = \| ui = \| license = [[Proprietary software\|Proprietary]] \| preceded by = \| succeeded by = \| website = <!-- {{URL\|www.example.org}} --> \| support status = <!-- For articles about releases of operating systems ONLY --> \| other articles = \| prog_language = }} {{History of IBM mainframe operating systems\|misc}}▼ '''~~BOS~~Basic Operating System/360''' ~~(Basic~~ ~~Operating System~~('''BOS/360''') was an early [[IBM System/360]] [[operating system]].▼ == Origin == ▲{{History of IBM mainframe operating systems}} BOS was one of four System/360 Operating System versions developed by the IBM General Products Division (GPD) in [[Endicott, New York]] to fill a gap at the low end of the System/360 line when it became apparent that OS/360 was not able to run on the smallest systems. [[IBM Basic Programming Support\|BPS (Basic Programming support)]] was designed to run on systems with a minimum of 8 KB of main storage and no disk. BOS was intended for disk systems with at least 8 KB and one [[IBM 2311\|2311]] disk drive.<ref>{{cite book \|last1=IBM Corporation \|title=IBM System/360 Basic Operating System Programmer's Guide \|date=Sep 1967 \|url=http://bitsavers.org/pdf/ibm/360/bos_bps/C24-3372-6_BOSpgmr_Sep67.pdf \|access-date=Jan 24, 2022}}</ref> [[DOS/360 and successors\|DOS and TOS]] were developed from BOS for systems with at least 16 KB and either disks (DOS) or [[Magnetic tape\|tape drives]] only (TOS). ▲'''BOS/360''' (Basic Operating System/360) was an early [[IBM]] [[operating system]]. BOS was released in October 1965, nearly two years before OS/360,<ref>Pugh, Emerson, et al. "IBM's 360 and Early 370 Systems". MIT Press, 1991, p. 331</ref> thus BOS was the only disk based operating system available at launch for a machine that was marketed as disk based. It came in 2 versions, 4K BOS and 8K BOS. The latter evolved into [[DOS/360]] which some{{who}} suggest was really version 6 of BOS. BOS in turn was preceded by BPS, Basic Programming Support. The first 360s to be shipped were the models 30 and 40. BOS was the first disk based operating system{{Fact\|date=June 2008}} and was released in early 1965. 4K BOS was for machines with 8 or 16K of core storage and as its name implies, assembled a Supervisor of about 4K. With very few exceptions, all of the early 360s (but not the model 20) shipped with 2, 3 or more 2311 disk drives.{{Fact\|date=June 2008}} Thus BOS was the only disk based operating system available at launch for a machine that was marketed as disk based. The Supervisor was IPL'd and the date and time were entered by the operator on the console typewriter. == Components == The operating system disk contained a source language library, a macro library and a core image library. The macro library included all the options for the supervisor, which was assembled by the 360 assembly language compiler, the only language available at the time, although [[RPG programming language\|RPG]] came a little later. The other crucial component was the Job Controller, which was fed by punched cards using [[Job Control Language\|JCL]] (Job Control Language). Most BOS users upgraded to DOS and added more core, typically to 32K or even a gargantuan (for the time) 64K. DOS was the first System/360 operating system to introduce multi-programming. It could be configured with 2 foreground partitions, typically used for spooling while the main [[JOB Stream]] ran in the background. BOS consisted of the following components: * Control programs: The [[Supervisory program\|supervisor]]. [[Job Control Language\|Job control]] capable of running jobs sequentially from the card reader. ** The [[Initial Program Load#IBM Initial Program Load\|IPL]] loader. * System Service Programs: The [[Linkage editor\|Linkage Editor]]. The Librarian, supporting a core-image library, and optionally a macro library and a relocatable library. ** The "Load System Program," a [[sysgen]] program to build a disk-resident BOS system from cards. * IBM-supplied processing programs which could be installed with BOS: Language translators, an [[Assembler (computer programming)#Assembler\|Assembler]] and an [[IBM RPG\|RPG]] compiler. Compilers for [[FORTRAN IV]] and [[COBOL]] were added later. Autotest, a debugging aid. Sort/Merge. Utility programs for file-to-file copy between devices and formats. ** [[Remote job entry\|Remote Job Entry]] allowing the BOS system to submit jobs to a remote System/360 and receive output. * Data Management, consisting of supervisor support for Physical [[IOCS]], and macros for Logical IOCS which could be incorporated into the user's processing programs. == IBM 1070 Process Communication Supervisor == {{IBM operating systems}}▼ The [[IBM 1070]] Process Communication Supervisor was a dedicated [[Industrial control system\|process control system]] that ran as an extension under BOS "Relying on the BOS supervisor to handle ordinary physical and logical I/O operations (i. e., for cards, disk, etc.), the PC supervisor is specialized to the process control aspects of the user's program."<ref>{{cite book\|last=IBM Corporation\|title=IBM System/360 Basic Programming Support and Basic Operating System/360 Programming Systems Summary (C24-3420-0).\|year=1965\|url=http://www.bitsavers.org/pdf/ibm/360/bos_bps/C24-3420-0_BPS_BOS_Programming_Systems_Summary_Aug65.pdf}}</ref> ~~{{FOLDOC}}~~ == References == [[Category:IBM Mainframe computer operating systems]]▼ {{Reflist}} == Further reading == *Pugh, Emerson W.; Johnson, Lyle R.; Palmer, John H. (1991). [https://books.google.com/books?id=MFGj_PT_clIC&q=IBM%27s+360 ''IBM's 360 and Early 370 Systems''], Cambridge : MIT Press. (pp. 321–345) ▲{{IBM operating systems}} {{DEFAULTSORT:BOS 360}} ~~{{operating-system-stub}}~~ ▲[[Category:IBM ~~Mainframe computer~~mainframe operating systems]] [[Category:Discontinued operating systems]] [[Category:Assembly language software]] [[Category:1965 software]]