Path: utzoo!attcan!utgpu!watmath!att!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!ginosko!uunet!vsi!friedl
From: friedl@vsi.COM (Stephen J. Friedl)
Newsgroups: comp.arch
Subject: Re: CISC Microprocessors
Summary: 6809 was random logic
Keywords: Microcode vs hardwired?
Message-ID: <1163@vsi.COM>
Date: 10 Aug 89 05:50:15 GMT
References: <405@ctycal.UUCP> <3098@scolex.sco.COM> <486@lexicon.com> <427@ctycal.UUCP>
Organization: V-Systems, Inc. -- Santa Ana, CA
Lines: 19

In article <427@ctycal.UUCP>, ingoldsb@ctycal.COM (Terry Ingoldsby) writes:
> Thanks for all the info about the many different microprocessors.
> I had suspected that the 32000 was microcoded (elegant but slow)
> and the 6502 was hardwired (primitive but fast).  What about the
> 6809?  It seems to have been a very nice chip (for an 8 bit) but
> never went very fast.  Is this a good indication it was microcoded?

_Byte_ magazine ran a three-part article on the design of the 6809,
and they say that it used random logic.  Written by Terry Ritter and
Joel Boney of Moto, it appeared in Jan/Feb/Mar 1979, and it is very
good reading.

     Steve

-- 
Stephen J. Friedl / V-Systems, Inc.  /  Santa Ana, CA  / +1 714 545 6442 
3B2-kind-of-guy   / {attmail uunet}!vsi!{bang!}friedl  /  friedl@vsi.com

"My new bestseller, _Teach_Yourself_to_Read_, is now available everywhere" -me