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Topic: NVRAM

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	NationMaster - Encyclopedia: NVRAM
		NVRAM is a subgroup of the more general class of non-volatile memory types, the difference being that NVRAM devices offer random access, as opposed to sequential access like hard disks.
		A huge advance in NVRAM technology was the introduction of the floating-gate transistor, which led to the introduction of erasable programmable read-only memory, or EPROM.
		Here's a way to modify NVRAM IDPROM info on a Sun 3/80 (people have to do this because of the usual battery problem, as with the sun4c machines) This may not be the most elegant procedure, but this should allow you to modify the NVRAM IDPROM info on a sun 3/80.
	www.nationmaster.com /encyclopedia/NVRAM (0 words)

	SUN NVRAM/hostid FAQ
		Usually, when the NVRAM gets corrupted in this way, this is a symptom that the battery embedded in the NVRAM chip has run out and you need to replace the chip.
		The ethernet address in NVRAM is the default address for all ethernet interfaces.
		The NVRAM chips are SGS-Thomson Timekeeper (formerly Mostek) chips.
	www.squirrel.com /sun-nvram-hostid.faq.html (6177 words)

	How to Clear NVRAM (Site not responding. Last check: )
		NVRAM can occasionally become corrupt and resetting it back to factory default settings can be a first step in troubleshooting.
		NOTE: The NVRAM switch in the up position clears the memory, but will not hold the configuration after the power is cycled.
		Return the NVRAM switch to the down position (failure to return the switch to the down position will cause the unit to return to factory defaults each time the STHI is rebooted).
	www.enterasys.com /support/techtips/tk0109-9.html (1160 words)

	[No title]
		Resetting the NVRAM (when Stop-N doesn't do it) You might want to do this to recover from the loss of an NVRAM password (in full security mode) or if you mess up your nvramrc.
		Replacing the NVRAM chip is a relatively simple matter, the only trick is to set the appropriate values in the Sun PROM monitor using the q command then boot the operating system to kick-start the clock.
		Once it is programmed, you can copy it's contents to the NVRAM's on the I/0 boards by using the command: copy-clock-tod-to-io-boards You can also program a blank or corrupt NVRAM on a board by copying a valid copy from another board.
	www.squirrel.com /squirrel/sun-nvram-hostid.faq (0 words)

	Fixing a Sun NVRAM chip
		So fix your NVRAM using this guide only if you have soldering skills and are not faint of heart.
		You'll need the NVRAM with the empty battery, two 1.5Volt batteries (even used ones are okay), a soldering iron, some wire, a saw or Dremel tool and a knife.
		When taking out the NVRAM, carefully note on which side the dot is! The NVRAM should be reinserted the same way it came out.
	www.giga.nl /computers/nvram (611 words)

	Replacing a SparcStation NVRAM Battery — toojays.net (Site not responding. Last check: )
		From the Sun NVRAM FAQ, I discovered that it might be possible for me to attach a new battery to the old NVRAM, saving me from having to order a new one.
		On one side of the NVRAM, there is some resin which covers the contacts between the battery and the main chip.
		I put the NVRAM upside down in a vice, and used a high speed drill in a drill press to bore into it.
	shared.nidelven-it.no /toojays/portal/tech/sparcstationnvram (378 words)

	New Computers Based On Non-Volatile Random Access Memory
		Using NvRam as a solid state disk is an easy way to realize many of it's benefits without any changes to the operating system.
		A device driver may configure the NvRam so all or a portion of it appears as a disk to the operating system.
		NvRam disk emulators will be too small to hold an XP installation for quite some time.
	www.techneon.com /paper/nvram.html (1956 words)

	NVRAM Battery Fix FAQ
		Fixing NVRAM is not a difficult task if you have the right tools.
		This FAQ assumes that your NVRAM battery is dead and the data in the NVRAM is invalid.
		This is for folks who need to replace their NVRAM chip in a sun4c/m/u machine and don't want to bother with XOR calculations or the details above with mkp.
	www.bhargavaz.net /nvram/nvram.html (1001 words)

	Mac PRAM, NVRAM, CUDA/PMU & Battery Tutorial
		When Mac users are having problems with their Mac, troubleshooting suggestions are frequently made to: "Zap the PRAM", "Zap the NVRAM", "Reset the CUDA (or PMU)", or "Replace the internal memory battery".
		NVRAM is found on Macs that have a PCI bus.
		Some of it deals with the computer's PRAM and NVRAM, but one of the most easily apparent piece of information it maintains is the date and time.
	www.geocities.com /texas_macman/pram.html (4809 words)

	STMicroelectronics \| NVRAM \| Industrial Temperature Devices
		NVRAM Supervisor, 5V and 3V, selectable Power-fail Deselect voltage, controls up to four 1Mb or 4Mb (or larger) LPSRAMs, Reset Output, Battery Low Output
		NVRAM Supervisor 2.7 to 3.6V, POR-LVD, PFI/PFO, Battery Low Output, controls one 1Mb to 4Mb (or larger) LPSRAM
		NVRAM Supervisor, 5V, with selectable Power-fail Deselect voltage, controls one 1Mb to 4Mb (or larger) LPSRAM
	www.st.com /stonline/products/families/memories/nvram/nv_ind.htm (0 words)

	Clearing NVRAM through Advanced mode of SCU (System Configuration Utility)
		NVRAM will remain corrupt if you choose to use the maintenance switch instead of Advanced mode of SCU.
		Now that the image is restored, get the settings you need for the resources (especially ISA and EISA boards), then proceed to clear out NVRAM one more time, be sure to skip the preparation steps this time as you already have that information on floppy.
		Don't stop here, please run through clearing NVRAM and use the settings you found here to reconfigure; if you stop here, then you have not accomplished anything.
	www.cpqlinux.com /nvram.html (1296 words)

	Sun 3/80 NVRAM
		The Sun 3/80 was the first Sun which used a NVRAM instead of an EEPROM (to store the settings which can be viewed and changed by the "eeprom" command) and a PROM (machine type, serial number and ethernet address) to store the hardware settings.
		The NVRAM is sitting on the mainboard in the left rear corner.
		Put the NVRAM back into it's socket (look for the correct direction) and put the graphics card back into the slot.
	www.sun3zoo.de /en/nvram.html (1295 words)

	Embedded.com - Task scheduling, NVRAM support added to embedded database
		Endevco has released replacement sensors that provide a cost-effective way to update or upgrade existing vibration test cells with the company's accelerometers at a cost savings of 10% or more.
		One important enhancement to eXtremeDB 3.0 is improved task scheduling, which employs a fast new synchronization mechanism that minimizes expensive context switches, while using fewer CPU cycles to resolve resource contention.
		NVRAM is memory that is backed up by a battery so even if a device is turned off or loses its power source, the content of the memory remains.
	www.embedded.com /showArticle.jhtml?articleID=180202390 (636 words)

	"NVRAM" - Shopping.com
		NVRAM for Sun Blade 100, Sun Blade 150, Netra T1 AC200/DC200, Netra 120, Sun Fire V120 100-6889...
		Sun Nvram for Ultra 1 5 10 30 60 80 E220R E420R (P/ N 525 1430)
		Sun Enterprise 250 NVRAM (Barcode:525-1726) 525-1726 M48T59-70PC1 This is a New NVRAM with a...
	www.shopping.com /xCC-NVRAM--price_range_30_40 (563 words)

	NVRAM / Ethernet (167 UNIX)
		If the NVRAM chip ever needs to be replaced on the Motorola 167's, the system may boot up properly, but it is possible that Telnet or FTP may not work because the board will not know what Ethernet address it should have.
		To verify that the Ethernet address in the 167's NVRAM is correct, use the "cnfg" command as follows:
		To modify the NVRAM configuration information, find the correct values from the board itself.
	www.mts.com /rpc3/498_troubleshooting_guide/4_21.htm (460 words)

	NVRAM
		I'm confused, just what is NVRAM, I googled it and got all kinds of answers mostly talking about Sun products and routers, the sys does continue to boot but runs very sluggishly..
		NVRAM is memory on a chip that is supposed to retain its information after the system has been powered down, and receives its small amount of power needed to keep it from the CMOS battery installed in your motherboard.
		Since the BIOS relies on the settings stored in NVRAM in order to best handle the particular hardware you have, performance may not be optimized for stability and performance any longer.
	www.computerhaven.info /forum/tm.aspx?m=37747 (430 words)

	Williams Video Games CPU NVRAM Conversion @ www.robotron-2084.co.uk
		The daughterboards were designed to be fitted to dedicated games and so the unused portions of the NVRAM device are ignored, though you could bank switch the upper three (unused) address lines to give you up to 8 different sets of saved game data in a multigame environment.
		The NVRAM module should have the 4 holes (for Bubbles D4-D7) at the bottom and the notch in the NVRAM chip at the top as shown in the picture.
		Ensure that Q3, the transistor at the lower left side of the NVRAM Module does not foul it as sometimes they were left with long legs when installed at the factory.
	www.robotron-2084.co.uk /techwilliamscpunvram.html (1129 words)

	Files Reference - nvram Special File
		The nvram special file is used by machine-specific configuration programs to store or retrieve configuration and boot information using the nonvolatile RAM or ROM provided on the machine.
		The machine device driver supports the nvram special file as a multiplexed character special file.
		The read subroutine is supported after a successful open of the nvram special file with a channel name of base.
	www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/share/man/info/en_US/a_doc_lib/files/aixfiles/nvram.htm (654 words)

	What is NVRAM? - A Word Definition From the Webopedia Computer Dictionary
		One type of NVRAM is SRAM that is made non-volatile by connecting it to a constant power source such as a battery.
		Another type of NVRAM uses EEPROM chips to save its contents when power is turned off.
		In this case, NVRAM is composed of a combination of SRAM and EEPROM chips.
	www.webopedia.com /TERM/N/NVRAM.html (106 words)

	[Ewrt-devel] nvram variables (Site not responding. Last check: )
		And all a commit does is make the change to the NVRAM permanent so as to last through a reboot.
		When the box reboots, upon startup it reads the NVRAM variables and For example changing the gw via NVRAM won't change the routing table on the box.
		When you make the changes via the web interface, the backend is "smart enough" to not only commit the changes to NVRAM, but also run the route command, or whatever command it needs to to enact the change immediately.
	www.portless.net /pipermail/ewrt-devel/2004-August/000158.html (282 words)

	Nvram wakeup - VDR Wiki
		NVRAM WakeUp is a program that can read and write the wakeup time in the BIOS (via /dev/nvram on kernels >= 2.4.6 or via direct I/O).
		NVRAM WakeUp is not dependent on VDR, but was designed with VDR in mind.
		If everything fails and NVRAM WakeUp didn't recognised your board and guess_helper is of no use, there is another script included with NVRAM WakeUp that should always do it's job.
	www.linuxtv.org /vdrwiki/index.php/Nvram_wakeup (233 words)

	Introduction to Memory Types - RAM, ROM, SRAM, DRAM, PROM, EPROM, EEPROM, flash, NVRAM
		The third member of the hybrid memory class is NVRAM (non-volatile RAM).
		However, an NVRAM is physically very different from those devices.
		When the power is turned off, the NVRAM draws just enough power from the battery to retain its data.
	www.netrino.com /Publications/Glossary/MemoryTypes.php (1240 words)

	Documentation
		Starting with the first unoccupied slot closest to the top edge of the NVRAM adapter, align the SIMM over the slot and then tilt the top edge of the SIMM at a slight angle toward the top edge of the NVRAM adapter.
		The lithium batteries on the NVRAM adapter differ from the lithium battery used on the motherboard.
		The batteries for the NVRAM adapter and the motherboard cannot be interchanged.
	support.dell.com /support/edocs/stor-sys/spv7xxn/sm/cards.htm (1271 words)

	Pure Digital PV2 NVRAM Analysis
		NVRAM stands for non-volatile RAM and it is a section of memory that retains its contents even after power is lost.
		It can be implemented in a variety of ways -- it can be battery-backed RAM memory (like on PCs), or a EEPROM memory (Electronically Erasable Programable Read-Only Memory; typically low-density memory chips), or it can even be the FLASH memory used in memory cards.
		NVRAM can store a variety of small items of information.
	www.maushammer.com /systems/dakotadigital/lcd-nvram.html (508 words)

	NVRAM
		If you need your orginal Host ID and/or Ethernet address in the new NVRAM please include these with your order.
		NVRAM ships in 3 to 5 business days.
		NVRAM For: Ultra 1 (140/170), Ultra 2, Ultra-5, Ultra-10, Ultra-30, Ultra-60, Netra-T1405
	www.amessciences.com /nvram.html (166 words)

	Intel NetStructure® 6000 Switch - NVRAM Backup and Restore
		As part of the switch's fault tolerant structure, non-volatile RAM (NVRAM) is used to store configuration information for the switch.
		Use the path argument only to save the NVRAM to a file in a directory other than the default directory "/tftpboot".
		Use the path argument only if the NVRAM file was saved in a directory other than the default directory "/tftpboot".
	support.intel.com /support/express/switches/6000/sb/CS-012294.htm (368 words)

	Resetting your Mac's PRAM and NVRAM
		Your computer's PRAM and the NVRAM are reset to the default values.
		For information on when this is appropriate and for instructions on how to reset the PMU in your PowerBook computer, see Resetting PowerBook and iBook Power Management Unit (PMU).
		If your computer is Open Firmware-based and you are unable to reset NVRAM as described above, you may alternatively reset the NVRAM and Open Firmware settings using the steps in the Solution section of Message “To continue booting, type 'mac-boot' and press return”.
	docs.info.apple.com /article.html?artnum=2238 (0 words)

	VMTN Discussion Forums: deleting nvram file? ...
		I want to delete the new VM, but it is asking me about deleting the nvram file along with the.log files, which i'm guessing would be shared with the existing VM.
		The nvram file is in lack of a better word the VM's bios.
		i don't want to go ahead with this since that nvram file is in use by another VM (production).
	www.vmware.com /community/click.jspa?searchID=-1&messageID=428434 (0 words)

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