i3 EtherLan User Manual
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EtherLan User GuideCMOS Lock machine protection software in Flash ROMAll i3 EtherLan cards are now supplied with CMOS Lock software installed in FlashROM. This provides the system manager with a range of protection options for thecomputer, and is fully described in a separate manual supplied with the card.Other software protocols in Flash ROMWe can also supply upgrade discs for the installation of any of a number of additionalnetworking protocols into the Flash ROM of your Z3 EtherLan cards. The most commonlyrequested protocols are AppFS client, ClassShare client and Acorn Access+. The first twoof these are available on a site-wide basis for a nominal handling charge. Access+ issupplied under license from Acorn; a license fee is payable and the upgrade is serialised toeach card which you need to upgrade.Some older third-party protocols such as NetGain and BootP can also be supplied tospecial order. These require the older (DCI-2) release of the Acorn networking protocols.Virus ProtectionIf you are prepared to disconnect your computers' floppy disc drives, virus protection ofyour system will be considerably enhanced. Software can then only be introduced onto thenetwork by authorised individuals using a computer with a floppy disc drive, probably onewhich is in a secure location. All other computers may have their floppy disk drivesdisconnected or even removed2 . The AUN software will 'boot' entirely from the FlashROM and can be updated over the network. You should also configure these computers tohave no floppy drive as this will speed their booting; this can be done through the!Configure application. Once this has been done the CMOS Lock software can be used toprevent anyone other than the system manager changing the configuration.Network DiagnosticsWhen used on twisted pair networks the i3 EtherLan card supports diagnostic features toaid detection and correction of common faults. The card automatically detects and correctspolarity reversal on the incoming twisted pair link (typically this fault is caused by a wiringerror). Although the link will work the software records and reports the fault condition.Additionally, a twisted pair link is continuously checked for a connection to the remotehub. If the link becomes broken the driver software reports this.1 Self Test and Cable CheckOn power on or after a computer reset the software on the i3 EtherLan card performs a selftest and cable check. The self test checks the on-board buffer memory, controller chip(DMA, CRC generation and checking, address recognition, serialiser/deserialiser, transmitand receive paths, etc.) and network interface. The cable check will determine whetherthere is a properly terminated cable attached to the card. Fault conditions such as no cableor unterminated cable will be diagnosed. A star (*) command is also provided to force sucha check on the currently-selected interface connection.Packaging2 Please check with Acom Computers Ltd, your dealer or distributor to ensure that you are authorised to make specificmodifications to your computer without invalidating its warranty or safety features.- 3 -ELANUG:214, Issue 2.1 |
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