Path: utzoo!utgpu!attcan!uunet!mcrware!jejones From: jejones@mcrware.UUCP (James Jones) Newsgroups: comp.arch Subject: Re: RCA 1802 (was: PC history) Summary: sexy MPUs--the 1802 is not alone! Keywords: history, pc, RCA, 1802 Message-ID: <719@mcrware.UUCP> Date: 4 Aug 88 15:34:17 GMT References: <5458@ecsvax.uncecs.edu> <1876@looking.UUCP> <753@applix.UUCP> <3884@sequent.UUCP> Organization: Microware Systems Corp., Des Moines, Ia. Lines: 11 In article <3884@sequent.UUCP>, jjb@sequent.UUCP (Jeff Bob Berkowitz) writes: > For many years, the 1802 was the ONLY choice for a wide variety of specialized > applications .... > also, the only processor with a SEX instruction ("SEt X", yes it's true :-). I respectfully differ. The 6809 has a SEX instruction ("Sign EXtend", i.e. propagate the MSB of the B register into the A register giving a 16-bit quantity in the double accumulator D.) :-) Cheers, James Jones