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a rose wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 history 2 overview 3 references toggle the table of contents a rose add languages add links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia embedded operating system this article has multiple issues please help improve it or discuss these issues on the talk page learn how and when to remove these messages this article needs more citations please help improve this article by adding citations to reliable sources unsourced material may be challenged and removed find sources a rose news newspapers books scholar jstor november 2023 learn how and when to remove this message this article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations please help improve this article by introducing more precise citations november 2023 learn how and when to remove this message this article may contain original research please improve it by verifying the claims made and adding inline citations statements consisting only of original research should be removed october 2016 learn how and when to remove this message learn how and when to remove this message operating system a rose developer apple computer os family macintosh embedded operating systems working state historic initial release february 1988 38 years ago 1988 02 supported platforms macintosh coprocessor platform for macintosh motorola 68000 a rose apple real time operating system environment is a small embedded operating system that runs on apple computer s macintosh coprocessor platform an expansion card for the macintosh the idea was to offer a single overdesigned hardware platform on which third party vendors could build practically any product reducing the otherwise heavy workload of developing a nubus based expansion card however the mcp cards were expensive limiting the appeal of the concept a rose had very little use apparently limited solely to apple s own networking cards for serial i o ethernet token ring and twinax 1 greenspring computers developed the rm1260 which is an industrypack ip carrier card with a 68000 cpu running a rose and is intended for the data acquisition market history edit apple released this a rose based ethernet nubus card with a motorola 68000 processor a rose and the mcp originated in august 1987 during the development of the macintosh ii while working on various networking products for the new system the developers realized that the existing classic mac os would make any serious card difficult to create due to large latencies and the difficulty of writing complex device drivers their solution was to make an intelligent nubus card that was essentially an entire computer on a card containing its own motorola 68000 processor working space in ram mirrored in the main system and its own basic operating system the first version of the system was ready for use in february 1988 a rose was internally called mr dos multitasking realtime distributed operating system but microsoft the developer of ms dos did not appreciate the name and put pressure on apple to change it citation needed eric m trehus a qa engineer on the token ring card running a rose reportedly said a rose by any other name is still mr dos citation needed a rose is infamous for its esoteric purpose which is generally not understood by mac end users and for causing many mac emulators such as basilisk ii to produce a system error at boot time overview edit a rose is very small at 28 kb with a 6 kb kernel a rose supports pre emptive multitasking with round robin scheduling of tasks with a 110 microsecond context switch time and only 20 microseconds of latency guaranteed interrupt response time the system s task is primarily to move data around and start and stop tasks on the cards and the entire api contains only ten calls a rose is a message passing system and the main calls made its programs are send and receive messages are short including only 24 bytes of user data and sent asynchronously to find the appropriate endpoint its name server allows the applications to bind their names to their task ids allowing them to move in the system and be found dynamically the os has several routines for finding starting and stopping tasks on other cards one of which is a virtual card representing the host computer to coordinate communications and provide a mechanism for talking with the host s cpu a cut down copy of a rose also runs inside the mac os in the form of a system extension or init known as prep device drivers for a rose cards are inits and started up automatically after starting they find the prep stub and use the normal a rose communications channel it provides to communicate with the cards for instance the apple tokentalk nb card installs its driver as an init and optionally installs the prep stub assuming it had not been installed before on startup the driver finds the prep stub and asks it to enumerate the tokentalk cards installed in the machine and optionally uploads code or settings to them from that point on prep handles the communications with the card handing off the results to the tokentalk driver references edit maurer joseph inside the macintosh coprocessor platform and a rose mactech retrieved november 25 2023 v t e operating systems by apple apple ii iii lisa apple ii apple dos prodos gs os apple iii sos lisa lisa os macworks mac classic mac os system 1 systems 2 3 and 4 system 5 system 6 system 7 mac os 8 mac os 9 macos history nextstep openstep rhapsody mac os x server 1 0 public beta core darwin xnu mac os x 10 0 cheetah 10 1 puma 10 2 jaguar 10 3 panther 10 4 tiger 10 5 leopard 10 6 snow leopard 10 7 lion os x 10 8 mountain lion 10 9 mavericks 10 10 yosemite 10 11 el capitan macos 10 12 sierra 10 13 high sierra 10 14 mojave 10 15 catalina 11 big sur 12 monterey 13 ventura 14 sonoma 15 sequoia 26 tahoe 27 golden gate other projects shipped a rose a ux aix for apple network servers mae mklinux poweropen environment cancelled star trek pink copland nukernel vanguard ios derivatives ios iphone os 1 2 3 ios 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 26 27 ipados 13 14 15 16 17 18 26 27 others tvos visionos watchos audioos bridgeos others newton os ipod software list category retrieved from https en wikipedia org w index php title a rose oldid 1350422255 categories embedded operating systems apple inc software apple inc operating systems 1988 software hidden categories articles with short description short description matches wikidata articles needing additional references from november 2023 all articles needing additional references articles lacking in text citations from november 2023 all articles lacking in text citations articles that may contain original research from october 2016 all articles that may contain original research articles with multiple maintenance issues short description is different from wikidata all articles with unsourced statements articles with unsourced statements from july 2015 articles with unsourced statements from september 2017 this page was last edited on 21 april 2026 at 21 27 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy 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