Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!ittvax!dcdwest!sdcsvax!sdcrdcf!hplabs!sri-unix!MKrigel.ES@XEROX.ARPA From: MKrigel.ES@XEROX.ARPA Newsgroups: net.micro.apple Subject: Re: Weird opcodes Message-ID: <1901@sri-arpa.UUCP> Date: Thu, 12-Jul-84 08:22:00 EDT Article-I.D.: sri-arpa.1901 Posted: Thu Jul 12 08:22:00 1984 Date-Received: Sun, 15-Jul-84 09:59:01 EDT Lines: 11 HALT AND BRANCH? Actually the halt and branch instruction is common to many computers. It is used to set a primative break point (obviously); kinda' like a forced program PAUSE. I have the same instruction on a couple of mini-computers at work. It is vary handy when the operator must put some information into the switch register of a computer and somehow signal the CPU to continue processing. Marc