Lisp Machines were high-end workstations based on memory chips with tag bit support for various reasons, as well as a _(RISC) _(CPU) specially microcoded to support infinite-precision arithmetic and other operations that made high-level dynamic languages such as  _(Lisp) and _(Prolog) execute much faster and more safely than on ordinary machines. The primary purpose of this architecture was to allow the systems programmers to concentrate on developing high-level, well-integrated environments and tools, which succeeded in some sense. However, the economics of this architecture rapidly became untenable, and the companies that produced them went out of business.

<ul class="links">
<li>_("Symbolics Lisp Machine Museum"|http://www.sts.tu-harburg.de/~r.f.moeller/symbolics-info/symbolics.html) by Ralf Mller
<li>_("A few things I know about LISP Machines"|http://fare.tunes.org/LispM.html) by _(Fare)
</ul>
