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<title>DEC Multia</title>

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</style><table class="infobox hproduct vevent"><caption class="infobox-title fn summary">Multia</caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"></span></td></tr><tr><th scope="row" class="infobox-label">Manufacturer</th><td class="infobox-data"><a href="Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a></td></tr><tr><th scope="row" class="infobox-label"><a href="Central_processing_unit" title="Central processing unit">CPU</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">

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<ul><li><a href="Alpha_21066" class="mw-redirect" title="Alpha 21066">Alpha 21066</a></li>

<li><a href="Alpha_21066A" class="mw-redirect" title="Alpha 21066A">Alpha 21066A</a></li>

<li><a href="Pentium_(original)" title="Pentium (original)">Pentium</a></li></ul>

</div></td></tr><tr><th scope="row" class="infobox-label"><a href="Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data"><a href="Windows_NT" title="Windows NT">Windows NT</a></td></tr><tr><th scope="row" class="infobox-label">Website</th><td class="infobox-data"><a rel="nofollow" class="external text" href="http://web.archive.org/web/19961226033959/http://www.digital.com/info/multia/">digital.com/info/multia</a> at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a> (archived 1996-12-26)</td></tr></tbody></table>

<p>The <b>Multia</b>, later re-branded the <b>Universal Desktop Box</b>, was a line of desktop computers introduced by <a href="Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a> on 7 November 1994. The line is notable in that units were offered with either an <a href="Alpha_AXP" class="mw-redirect" title="Alpha AXP">Alpha AXP</a> or <a href="Pentium_(original)" title="Pentium (original)">Intel Pentium</a> processor as the <a href="Central_processing_unit" title="Central processing unit">CPU</a>, and most hardware other than the <a href="Backplane" title="Backplane">backplane</a> and CPU were interchangeable. Both the Alpha and Intel versions were intended to run <a href="Windows_NT" title="Windows NT">Windows NT</a>.

</p><p>The Multia had a compact case that left little room for expansion cards and restricted air flow, which can cause premature hardware failure due to overheating if not properly cared for. Enthusiasts remedy this by placing the Multia vertically instead of horizontally, allowing the heated air to escape via vents at the top, although this still requires preventing the Multia from overheating due to other factors, e.g. environmental.

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<div class="mw-heading mw-heading2"><h2 id="Hardware_specifications">Hardware specifications</h2></div>

<p>The Alpha Multias included either an <a href="Alpha_21064#Alpha_21066" title="Alpha 21064">Alpha 21066</a> or <a href="Alpha_21064#Alpha_21066A" title="Alpha 21064">Alpha 21066A</a> microprocessor running at 166 MHz or 233 MHz respectively, and came with 16 or 24 MB of <a href="Random-access_memory" title="Random-access memory">RAM</a> as standard (expandable to 128 MB officially, but in practice 256 MB). Because the 21066 was a budget version of the <a href="Alpha_21064" title="Alpha 21064">Alpha 21064</a> processor, it had a narrower (64-bit versus 128-bit) and slower bus and thus performance was roughly equivalent to a Pentium running at 100 MHz for integer operations, but superior in floating-point; furthermore, the standard RAM capacity was a severe restriction on the performance of these workstations. The Alpha-based Multias came with the TGA (DEC 21030) <a href="Graphics_adapter" class="mw-redirect" title="Graphics adapter">graphics adapter</a>.

</p><p>Standard peripherals on both Alpha and Intel models included a <a href="SCSI" title="SCSI">SCSI</a> host adapter, DEC 21040 <a href="Ethernet" title="Ethernet">Ethernet</a> controller, two <a href="PCMCIA" title="PCMCIA">PCMCIA</a> slots, two <a href="RS-232" title="RS-232">RS-232</a> ports, a bi-directional <a href="Parallel_port" title="Parallel port">parallel port</a>, a 2.5 in or 3.5 in <a href="SCSI" title="SCSI">SCSI</a> or <a href="Advanced_Technology_Attachment" class="mw-redirect" title="Advanced Technology Attachment">ATA</a> <a href="Hard_disk" class="mw-redirect" title="Hard disk">hard disk</a> (340 MB to 1.6 GB), <a href="PS/2_connector" class="mw-redirect" title="PS/2 connector">PS/2</a> keyboard and mouse ports, and a <a href="Peripheral_Component_Interconnect" title="Peripheral Component Interconnect">PCI</a> slot (on models with 2.5-inch hard disks).

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<div class="mw-heading mw-heading2"><h2 id="Models">Models</h2></div>

<p>Multia models comprised:

</p>

<ul><li>Alpha Multia (codenamed <i>QuickSilver</i>):

<ul><li><b>VX40</b>: 166 MHz 21066, optional floppy disk drive and external <a href="SCSI" title="SCSI">SCSI</a></li>

<li><b>VX41</b>: 166 MHz 21066 upgradable to 233 MHz 21066A</li>

<li>Intel Multia (codenamed <i>Minerva</i>):

<ul><li><b>VX51</b>: 100 MHz Pentium (P54)</li></ul></li></ul>

<p>In 1996, Digital began offering the Alpha Multia without Windows NT and renamed the line the "Universal Desktop Box" (nicknamed "UDB"). Prices were quite low, such that for the first time many enthusiasts and hobbyists could afford an Alpha AXP-based computer. The Multia or UDB can run <a href="Windows_NT" title="Windows NT">Windows NT</a> for Alpha through <a href="Windows_NT_4.0" title="Windows NT 4.0">Windows NT 4.0</a> Service Pack 6 (although <a href="Windows_2000" title="Windows 2000">Windows 2000</a> was never officially released for the Alpha platform, Windows 2000 Beta was released and in fact runs on the Multia), and both <a href="Linux" title="Linux">Linux</a> and <a href="NetBSD" title="NetBSD">NetBSD</a> are available for the Multia. Additionally, both <a href="Digital_UNIX" class="mw-redirect" title="Digital UNIX">Digital UNIX</a> and <a href="OpenVMS" title="OpenVMS">OpenVMS</a> can be configured to run on the Multia (with certain limitations), although initially such operating systems were disabled from running on the budget Multia line.

</p><p>The Alpha-based Multia came configured with the <a href="Advanced_RISC_Computing" class="mw-redirect" title="Advanced RISC Computing">ARC</a> <a href="Firmware" title="Firmware">firmware</a> console for running Windows NT, although <a href="System_Reference_Manual" class="mw-redirect" title="System Reference Manual">SRM</a> was also available. The Intel-based Multia used BIOS.

</p>

<ul><li><a href="DEC_Alpha" title="DEC Alpha">DEC Alpha</a></li>

<li><a href="Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

<ul><li><i>Multia MultiClient Desktop Service Information</i>, Third edition, part no. EK-MULTS-IN. C01, Digital Equipment Corporation, Maynard, MA, October 1995.</li></ul>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="http://web.archive.org/web/19961226033959/http://www.digital.com/info/multia/">Official website</a> at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a> (archived 1996-12-26)</li>

<li><a rel="nofollow" class="external text" href="http://www.brouhaha.com/~eric/computers/udb.html">Eric Smith's DEC UDB Information</a></li>

<li><a rel="nofollow" class="external text" href="http://www.netbsd.org/Ports/alpha/multiafaq.html">NetBSD/alpha Multia Frequently Asked Questions</a></li>

<li><a rel="nofollow" class="external text" href="http://www.obsolyte.com/dec/multia/">Obsolyte! DEC Multia Info Page</a></li></ul>

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</style><div id="Digital_Equipment_Corporation_computers590" style="font-size:114%;margin:0 4em"><a href="Digital_Equipment_Corporation" title="Digital Equipment Corporation">Digital Equipment Corporation</a> computers</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div><span typeof="mw:File"></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Programmed_Data_Processor" title="Programmed Data Processor">PDP</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0;background:transparent;color:inherit;"><div style="padding:0px"><table class="navbox-columns-table" style="border-spacing: 0px; text-align:left;width:100%;"><tbody><tr style="vertical-align:top"><td class="navbox-list" style="padding:0px;vertical-align:top;width:50%;"><div>

</div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="18-bit_computing" title="18-bit computing">18-bit</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="12-bit_computing" title="12-bit computing">12-bit</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="DECmate" title="DECmate">DECmate</a></li>

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</div></td><td class="navbox-list" style="border-left:2px solid #fdfdfd;padding:0px;vertical-align:top;width:50%;"><div>

</div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="36-bit_computing" title="36-bit computing">36-bit</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="DECSYSTEM-20" title="DECSYSTEM-20">DECSYSTEM-20</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="16-bit_computing" title="16-bit computing">16-bit</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="DEC_Professional" title="DEC Professional">DEC Professional</a></li></ul>

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</div></td></tr></tbody></table></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="VAX" title="VAX">VAX</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="MicroVAX" title="MicroVAX">MicroVAX</a></li>

<li><a href="VAXstation" title="VAXstation">VAXstation</a></li>

<li><a href="DEC_Firefly" title="DEC Firefly">Firefly</a></li>

<li><a href="VAXserver" title="VAXserver">VAXserver</a></li>

<li><a href="VAXft" title="VAXft">VAXft</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="X86" title="X86">x86</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Rainbow_100" title="Rainbow 100">Rainbow 100</a></li>

<li><a href="VAXmate" title="VAXmate">VAXmate</a></li>

<li><a href="DECpc" title="DECpc">DECpc</a></li>

<li><a href="DECstation#PC" title="DECstation">DECstation</a></li>

<li><a href="Digital_Personal_Workstation" title="Digital Personal Workstation">Digital Personal Workstation</a></li>

<li><a href="Digital_HiNote" title="Digital HiNote">HiNote</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="MIPS_architecture" title="MIPS architecture">MIPS</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="DECstation#MIPS" title="DECstation">DECstation</a></li>

<li><a href="DECsystem" title="DECsystem">DECsystem servers</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="DEC_Alpha" title="DEC Alpha">Alpha</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="DECpc_AXP_150" title="DECpc AXP 150">DECpc AXP 150</a></li>

<li><a href="AlphaServer" title="AlphaServer">AlphaServer</a></li>

<li><a href="AlphaStation" title="AlphaStation">AlphaStation</a></li>

<li><a href="Digital_Personal_Workstation" title="Digital Personal Workstation">Digital Personal Workstation</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Compaq_Professional_Workstation" title="Compaq Professional Workstation">Compaq Professional Workstation 1000 XP</a></li>

<li><a href="Itsy_Pocket_Computer" title="Itsy Pocket Computer">Itsy Pocket Computer</a></li>

<li><a href="Jupiter_project" title="Jupiter project">Jupiter project</a></li>

<li><a href="List_of_VAX_computers" title="List of VAX computers">List of VAX computers</a></li></ul>

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