NetBSD/alpha is a true 64-bit system that fully implements the LP64 architecture, using 64-bit pointers and 64-bit long integers (standard integers are still 32 bits) in a linear four terabyte (4TB) address space. NetBSD/alpha was the first free OS to run on the Alpha and supports by far the largest number of alpha system types of any free OS. NetBSD runs on almost all of the existing alpha systems, including some of the more unusual ones with proprietary or legacy bus architectures, such as the large-scale 8400, all of the TURBOchannel systems, the 4100 series, and the EISA-only Jensen. NetBSD/alpha FAQ Notes on Supported System Models NetBSD/alpha History Developers and Development Funding Chris Demetriou's Alpha documentation references The NetBSD Diskless HOWTO NetBSD's port to Digital's Alpha (64-bit) machines &a.garbled; has uploaded binary packages for NetBSD-3.0/alpha from the pkgsrc-2006Q3 branch into . &a.garbled; has uploaded binary packages for NetBSD-2.0/alpha from the pkgsrc-2005Q2 branch into . 264DP, XP1000, DS10, DS20, API UP2000, UP2000+ and other Tsunami-based EV6 systems API UP1000 and UP1100 (AMD 751-based) EV6 systems DECpc AXP 150 (Jensen) DEC 3000/500-family systems (includes DEC 3000/400,600,700,800,900) DEC 3000/300-family systems Digital AlphaStation 200, 250, 255, and 400 systems Digital AXPpci systems (including UDB and Multia) EB64+-family systems (including Digital EB64+ and third-party AlphaPC 64 systems) EB66 Evaluation Board ALPHABook 1 Digital AlphaStation 500 and 600 systems EB164-family systems (including Digital EB164 and third-party AlphaPC 164 systems) Digital AlphaServer 8200 and 8400 systems Digital AlphaServer 4100 systems Digital AlphaServer 1000 systems Digital AlphaServer 1000A systems Digital AlphaServer 800 systems Digital Personal Workstation (``au'' series) Digital Server 330x systems