Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site decwrl.UUCP Path: utzoo!watmath!clyde!cbosgd!cbdkc1!desoto!packard!hoxna!houxm!whuxlm!harpo!decvax!decwrl!dec-rhea!dec-dosadi!binder From: binder@dosadi.DEC Newsgroups: net.micro Subject: Re: Re: 4->8->16->32->64? bit micros Message-ID: <42@decwrl.UUCP> Date: Thu, 20-Dec-84 17:04:50 EST Article-I.D.: decwrl.42 Posted: Thu Dec 20 17:04:50 1984 Date-Received: Sat, 22-Dec-84 07:36:47 EST Sender: daemon@decwrl.UUCP Organization: DEC Engineering Network Lines: 14 Dave Trissel says the Z80 and MC6800 had only very primitive 16-bit functions. I take issue with that statement, at least for the Z80, which could (and still can!) use various of its 16-bit registers for accumulators for add and subtract, as well as increment/decrement, and for indexed and displaced addressing as well. They can also be used to control looping memory or I/O block search and move operations. They can alse be used in halves as 8-bit registers. It's no VAX, that's true, but I wouldn't call its 16-bit stuff really PRIMITIVE. Cheers, Dick Binder (The Stainless Steel Rat) UUCP: {decvax, allegra, ucbvax...}!decwrl!dec-rhea!dec-dosadi!binder ARPA: binder%dosadi.DEC@decwrl.ARPA