Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site umcp-cs.UUCP Path: utzoo!linus!philabs!seismo!rlgvax!cvl!umcp-cs!chris From: chris@umcp-cs.UUCP Newsgroups: net.arch Subject: Re: uP architecture - (nf) Message-ID: <416@umcp-cs.UUCP> Date: Sat, 2-Jul-83 16:16:24 EDT Article-I.D.: umcp-cs.416 Posted: Sat Jul 2 16:16:24 1983 Date-Received: Sun, 3-Jul-83 04:28:21 EDT References: <189@ucbcad.UUCP> Organization: Univ. of Maryland, Computer Science Dept. Lines: 25 From: ucbesvax.turner@ucbcad.UUCP Finally, has anyone heard of the 1802, which I have been told is a very slow but architecturally elegant CMOS uP? Yes! The 1802 is kinda neat. Also, it's not slow. For most applications it's faster than a Z80 (especially if you buy the 10 MHz (!) version) [don't quote me on this, I've never done a timing comparison]. And the CMOS is nice too, very low power, no heating, etc etc. The OSCAR sats use(d?) 1802s, and I think the Venus probes did also. The world's shortest loop: 20 # decrement PC! The 1802 is the only uP I know of with GHI (Get High) (8x I think) and SEX (Ex I think) instructions. (Seriously!) - Chris -- UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris.umcp-cs@UDel-Relay