What language was the "original" Postscript interpreter written in?

From	"luser.droog" <luser.droog@gmail.com>
Newsgroups	comp.lang.postscript
Subject	What language was the "original" Postscript interpreter written in?
Date	2012-11-16 18:03 -0600
Organization	unorganized
Message-ID	<k86k8q$1sl$1@dont-email.me> (permalink)

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I know Helmar was implementing array-"operators" very early in his
interpreter so that as much as possible could be built on top of a simpler
core. And ghostscript's docs express a an interest in replacing c-level
operators with higher-level ps equivalents in a similar drive towards
portability.

What is the subset of Postscript necessary to implement the rest of
Postscript using it? And what did Adobe use to create this core? M68000
Assembly? Or did they use C? or some weird custom Alto tool?

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What language was the "original" Postscript interpreter written in? "luser.droog" <luser.droog@gmail.com> - 2012-11-16 18:03 -0600
  Re: What language was the "original" Postscript interpreter written in? Don Lancaster <don@tinaja.com> - 2012-11-17 08:48 -0700
    Re: What language was the "original" Postscript interpreter written in? "luser.droog" <luser.droog@gmail.com> - 2012-11-19 00:56 -0600
      Re: What language was the "original" Postscript interpreter written in? luser- -droog <mijoryx@yahoo.com> - 2013-07-19 23:34 -0700

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