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Topic: Supervisor mode

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	Supervisor mode - Wikipedia, the free encyclopedia
		The idea of having two different modes to operate in comes from "with more control comes more responsibility" - a program in supervisor mode is trusted to never fail, because if it does, the whole computer system may crash.
		In a monolithic kernel, the kernel runs in supervisor mode and the applications run in user mode.
		In user-mode it would be necessary to utilise a system call into kernel-space (running in supervisor mode) where trusted code in the operation system will perform the needed task.
	en.wikipedia.org /wiki/Supervisor_mode (294 words)

	Microcomputer development system - Patent 4847805
		The mode selector 11 is controlled by a mode selector controller 12, which generates a mode selection signal 17 in response to a signal from the supervisor 1 via the supervisor bus 13.
		The supervisor 1 accesses the memory 2 via the supervisor bus 13; and on the other hand, the common emulation chip 4 accesses the memory 2 via the control program memory access bus 15 and the emulation chip bus 14.
		If a signal which puts the microcomputer development system from the supervisor mode to the emulation mode is then outputted to the supervisor bus 13, the signal is received by the mode selector controller 12.
	www.freepatentsonline.com /4847805.html (3453 words)

	LabeLase Producer - Main Form
		Supervisor Password - This menu item will activate the Change Password form that allows the supervisor to change the password that activates the supervisor mode of operation.
		The Maintenance menu is only available when in the Supervisor mode of operation and provides several features that aid in the setup of the printer and diagnosis of any problems you may encounter.
		These settings are available whether in operator or supervisor modes.
	www.infosight.com /labelaseproducer/mainform.htm (1976 words)

	SGI TPL (Hardware: Developer/R10K_UM - - Supervisor Mode Operations) (Site not responding. Last check: 2007-10-25)
		Supervisor mode is designed for layered operating systems in which a true kernel runs in processor Kernel mode, and the rest of the operating system runs in Supervisor mode.
		In Supervisor mode, when SX = 0 in the Status register and the most-significant bit of the 32-bit virtual address is set to 0, the suseg virtual address space is selected; it covers the full 231 bytes (2 Gbytes) of the current user address space.
		In Supervisor mode, when SX = 0 in the Status register and the three most-significant bits of the 32-bit virtual address are 1102, the sseg virtual address space is selected; it covers 229-bytes (512 Mbytes) of the current supervisor address space.
	techpubs.sgi.com /library/tpl/cgi-bin/getdoc.cgi/hdwr/bks/SGI_Developer/books/R10K_UM/sgi_html/t5.Ver.2.0.book_331.html (518 words)

	Supervisor mode -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-25)
		In a monolithic (The choicest or most essential or most vital part of some idea or experience) kernel, the kernel runs in supervisor mode and the applications run in user mode.
		Other types of ((computer science) software that controls the execution of computer programs and may provide various services) operating systems, like those with an (additional info and facts about exokernel) exokernel or (additional info and facts about microkernel) microkernel do not necessarily share this behavior.
		In user-mode it would be nessasary to utilise a (An instruction that interrupts the program being executed and passes control to the supervisor) system call into kernel-space (running in supervisor mode) where trusted code in the operation system will perform the needed task.
	www.absoluteastronomy.com /encyclopedia/s/su/supervisor_mode.htm (377 words)

	[No title] (Site not responding. Last check: 2007-10-25)
		I'll continue to speak of the privileged mode as "supervisor" and the nonprivileged mode as "user"; on the VAX, what I am calling "supervisor mode" is what the hardware docs speak of as "kernel mode".
		Every memory access from user mode must pass the protection checks set up in the MMU (or the access is denied and an exception occurs) and then the lookup table turns it into a physical address.
		If the register pointed to memory that not even supervisor mode could access, the window trap code would get an invalid access and it would either kill the user process or panic the system, depending on how carefully the MMU trap handler checks things.
	leet.k-r4d.com /cownews/supervisor (1587 words)

	Supervisor mode (Site not responding. Last check: 2007-10-25)
		In computer terms, supervisor mode is a hardware-mediated flag which can be changed by code running insystem-level software.
		DOS and other simple operating systems run in supervisor mode permanently, meaning thatdrivers can be written directly into software.
		In user-mode it would be nessasary to utilise a system call into kernel-space (running in supervisor mode) where trusted code in the operation system willperform the needed task.
	www.therfcc.org /supervisor-mode-209797.html (273 words)

	Supervisor mode (Site not responding. Last check: 2007-10-25)
		The idea having two different modes to operate in from "with more control comes more responsibility" a program in supervisor mode is trusted never fail because if it does the computer system may crash.
		In user-mode it be nessasary to utilise a system call into kernel-space (running in supervisor mode) trusted code in the operation system will the needed task.
		A great performance by Depeche Mode (on their 1993-94 Devotional Tour, listed by Q Magazine as "the most debauched rock tour ever") that was beautifully filmed by Anton Corbijn.DM are at their over-the-top best and surrounded by Corbijn's opulen...
	www.freeglossary.com /Supervisor_mode (650 words)

	Expodata Systems the UK's Premier Supplier of PC Diagnostics & Memory Testers (Site not responding. Last check: 2007-10-25)
		Entry to Supervisor Mode is by using the password that you selected during program installation.
		Supervisor Mode (always for one-day) is a useful mode when you need to reboot the computer several times to install or maintain the system.
		In Protection Mode (Auto Recovery), all changes that are made to the file system; deletions, modifications, additions, format, fdisk etc. are ignored when the system is rebooted.
	www.pctestpro.com /sheriff/sheriff2.htm (1105 words)

	Chips: Supervisor Mode
		So, in supervisor mode there is a special supervisor stack pointer and a supervisor status register.
		When the S bit is a 1, the processor is in supervisor mode and A7 refers to the supervisor stack pointer.
		When a reference is made to memory that isn't really there, an exception is generated and the operating system (sometimes known as the supervisor) loads in the proper memory from a secondary storage such as a hard disk.
	www.atarimagazines.com /startv1n3/SupervisorMode.html (1353 words)

	APS-8M - User's Guide, Rev. C - Section 5; Configuration
		Supervisor Mode commands can only be invoked by users who have logged in using a password that permits access to Supervisor Mode.
		On the other hand, passwords which are denied access to Supervisor Mode are not allowed to change configuration parameters, and are restricted to the ports specifically allowed by that password.
		When Supervisor Mode is disabled, the password will not permit access to configuration menus, and will only allow access to ports specifically permitted by the password definition.
	www.wti.com /guides/apsmc_05.htm (4216 words)

	CMS-16 / CMS-8 User's Guide, Rev. F - Section 5
		Section 8.4, and the Supervisor Password and User Passwords are discussed in the sections that follow.
		In this case, the only way to access the Supervisor Mode, is to reinitialize the CMS to default values as described in Section 4.3.
		The Supervisor Mode cannot be disabled at System SetUp Ports 1 and 2, or at the one inbound Network Port which always allows access to Supervisor Level commands, as described in Section 8.1.
	www.wti.com /guides/cms_f_05.htm (5300 words)

	APS-8M - User's Guide, Rev. B - Section 5; Configuration
		The Supervisor Password allows system administrators to invoke unit configuration commands, and the Port Passwords allow users to access specific ports in order to create connections between permitted ports or view port configuration parameters.
		Note however, that the Supervisor Mode cannot be disabled at Ports 1 and 2; these ports are designated as SetUp Ports, and are always allowed password protected access to Supervisor Level commands.
		The Supervisor Mode cannot be disabled at Ports 1 or 2.
	www.wti.com /guides/apsmb_05.htm (3198 words)

	[No title]
		KERNEL mode is the most privileged of the modes, allowing the execution of any instruction and the modification of any area in memory including the I/O page.
		SUPERVISOR mode is intended for use in the mapping and execution of programs to be shared by users while still providing protection from them.
		The execution mode is controlled by the state of bits 14 and 15 in the processor status word (PSW).
	www.ibiblio.org /pub/academic/computer-science/history/pdp-11/hardware/micronotes/numerical/micronote11.txt (1632 words)

	Method for a correlating virtual memory systems by redirecting access for used stock instead of supervisor stock during ...
		The supervisor stack zone, which is typically a few thousand bytes, for example 8K bytes, but could range to on the order of 32K bytes, located in physical memory, although its logical address is very near to the top of memory.
		Thus, the instruction is allowed to execute in supervisor mode under scrutiny, the trace routine is then switched back out of supervisor mode, and the processor is allowed to continue with other instructions in user mode.
		The supervisor stack exception frame is then changed in step 148 to the return address of the original trace vector, followed in step 150 by clearing the supervisor and trace mode bits from the supervisor stack exception frame.
	www.freepatentsonline.com /5063499.html (10645 words)

	68000 Exceptions and Interrupts
		A user may become a supervisor by setting the "supervisor" bit in the 68000 status register.
		The answer lies in the fact that the 68000 performs all its interrupts in supervisor mode, and exceptions are nothing but fancy user-called interrupts.
		You pass supexec the address of a routine that you would like executed in supervisor mode, and supexec worries about switching into supervisor mode, executing your code, and switching you out.
	www.atarimagazines.com /v5n3/ExceptionsInterrupts.html (1424 words)

	The 68000
		Supervisor Mode allows some additional instructions (i.e.; STOP RESET) and privileges and is intended for use by the operating system.
		The S bit (Supervisor State) controls the operating mode of the processor (S=0 for User Mode, S=1 for Supervisor Mode).
		Synchronous mode is used with older 68xx peripherals through the use of three control signals: E, Valid Peripheral Address (/VPA), and Valid Memory Address (/VMA).
	www.coe.uncc.edu /~sjkuyath/MC68000/pm1.htm (958 words)

	Supervisor ICs Monitor Battery-Powered Equipment - Maxim/Dallas
		The supervisor may only provide a power-on reset, or it may offer additional functions, such as backup-battery management, memory-write protection, low-line early warning, or a software watchdog.
		If the supervisor reset is high, for instance, and the µC tries to pull it low, the result may be an indeterminate logic level.
		Figure 8 connections allow both the supervisor and µC to assert valid resets to the system, and also ensure sufficient duration for the reset pulses (µC resets may be too short for some devices in the system).
	www.maxim-ic.com /appnotes.cfm/appnote_number/655 (2609 words)

	CCNP Practical Studies: Layer 3 Switching (Site not responding. Last check: 2007-10-25)
		The second mode is native mode, where a single operating system (Cisco IOS) controls and configures both the Supervisor engine and MSFC and is considered the way of the future for the Cisco Catalyst 6000/6500 switch.
		Native mode represents the future direction of the Cisco Catalyst 6000/6500; however, it is important to note that at this time, native mode requires an MSFC to be installed alongside the Supervisor, and some line cards and features are not currently supported in native mode.
		When working with boot variables in native mode, it is important to understand that just as in hybrid mode, the supervisor engine and MSFC each possess their own bootstrap code and associated boot variables.
	www.ciscopress.com /articles/article.asp?p=102093&seqNum=5 (6356 words)

	SysWorks
		If you specify executive mode, but do not have SYSNAM privilege, a supervisor- mode logical name table is created.
		The parent table must have the same access mode or a higher level access mode than the one you are creating.
		The mode of the logical name must be the same or less privileged than the mode of the table in which you are placing the name.
	www.sysworks.com.au /swdoc_doc_dir/swdoc_command_ref_022.html (3500 words)

	phorum - uclinux - Re: Ported Linux on BF533 using user/supervisor mode?
		Yes, there is supervisor and user mode and HW memory protection.
		Hi,IÂ´m new with bf-533 and uclinux, and IÂ´m trying to run an application in which I want to modify some MMR, thatÂ´s why I need to be in supervisor mode, but I donÂ´t know how to switch from user mode to supervisor mode.
		Swich to supervisor mode issue a EXCPT x instruction or generate a HW/SW interrupt.
	www.blackfin.org /phorum/read.php?f=3&i=303&t=287 (292 words)

	supervisor mode - Definition of supervisor mode by Webster's Online Dictionary (Site not responding. Last check: 2007-10-25)
		supervisor mode - (Or "supervisor state") An execution mode on some processors which enables execution of all instructions, including privileged instructions.
		It may also give access to different a address space, to memory management hardware and to other peripherals.
		This is the mode in which the operating system usually runs.
	www.webster-dictionary.org /definition/supervisor%20mode (71 words)

	Alive 9 - sp (Site not responding. Last check: 2007-10-25)
		When you normally do a intro/demo what ever you are in the supervisor mode so the SSP is used...
		when an irq appears the 68k switches to the SSP (because irqs are always executed in supervisor mode) so A7 has a valid pointer to keep up all stuff...
		When you are done with your innerloop you need to switch back to to supervisor mode et voila...
	alive.atari.org /alive9/sp.php (450 words)

	[No title] (Site not responding. Last check: 2007-10-25)
		When Administrator Mode or Supervisor Mode is used, you can use your system as if there's no SHERIFF installed on your system.
		Compute is set supervisor mode and restarting the computer automatically returns the mode to Protection mode.
		In this mode, all user's work can be saved, deleted, modified or installed like as in the supervisor Mode until the user decides to restore the very original state for whatever reason.
	support.tangent.com /hardware/misc/hdshrf-pci.htm (416 words)

	HP OpenVMS systems documentation
		If you use the /ALL qualifier and do not specify a table, then all names in the process table (except names created by the command interpreter) are deassigned; that is, all names entered at the indicated access mode or an outer access mode are deassigned.
		When you deassign a logical name, any identical names created with outer access modes in the same logical name table are also deleted.
		Deletes only entries that were created in the specified mode or an outer (less privileged) mode.
	h71000.www7.hp.com /DOC/82FINAL/9996/9996pro_42.html (1491 words)

	Processor state after loading an image into the debugger
		When an ELF image (created by default by the SDT 2.50/2.51 linker) is loaded into an ARM debugger, the processor mode is changed to Supervisor mode automatically by the debugger.
		Plain binary images can be loaded into the debugger with 'getfile', and the processor mode is not changed (it would typically be Supervisor mode).
		In SDT 2.11/2.11a the processor mode was (incorrectly) changed to Supervisor mode.
	www.arm.com /support/faqdev/1320.html (467 words)

	Fonctions base de données GEMTOS (Site not responding. Last check: 2007-10-25)
		`func' is the address to a function which will be called in supervisor mode.
		Care must be taken when calling the operating system in supervisor mode.
		The AES must not be called while in supervisor mode.
	gemtos.free.fr /fonctions.php3?fonction=Supexec (56 words)

	sports.ca - Supervisor (Site not responding. Last check: 2007-10-25)
		An accountant for the Fox network TV show "Prison Break" was found dead at the landmark Drake Hotel, authorities said...
		VESTAL -- Peter Andreasen won't be sworn in as Vestal's town supervisor until Jan. 1, but he says his duties began when he won the Nov. 8 election.
		The mystery surrounding Libby Everett's living arrangements should be solved before the week is out, a Hinds County supervisor predicted Monday.
	www.sports.ca /Supervisor/reference/search (165 words)

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