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From: ftp@hpcvlo.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: Strange 8086 CPU clones.
Message-ID: <1610016@hpcvlo.HP.COM>
Date: Mon, 6-Jul-87 12:31:28 EDT
Article-I.D.: hpcvlo.1610016
Posted: Mon Jul  6 12:31:28 1987
Date-Received: Thu, 9-Jul-87 05:51:28 EDT
References: <3995@vrdxhq.UUCP>
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Lines: 3

Some versions of the 80x8x family of CPUs use the POP CS instruction as a
means of extending the CPU's instruction set.  I believe that the NEC Vx0
series of CPU's do this.  Other's actually implement the POP CS instruction.