Path: utzoo!attcan!uunet!ginosko!ctrsol!uakari.primate.wisc.edu!indri!pikes!udenva!isis!csm9a!japplega
From: japplega@csm9a.UUCP (Joe Applegate)
Newsgroups: comp.sys.m6809
Subject: Re: Funny key presses
Message-ID: <1819@csm9a.UUCP>
Date: 26 Aug 89 18:26:56 GMT
References: <430@ctycal.UUCP> <433@ctycal.UUCP> <683@umigw.MIAMI.EDU>
Organization: Colorado School of Mines
Lines: 30

In article <683@umigw.MIAMI.EDU>, dnelson@ibiza.cs.miami.edu (Dru Nelson) writes:
> ingoldsb@ctycal.COM (Terry Ingoldsby) writes:
> 
> >In article <430@ctycal.UUCP>, ingoldsb@ctycal.COM (Terry Ingoldsby) writes:
> 
> >I know that there are some higher speed versions of the 6809 available.
> >Does anyone know if these are just fast clock speed versions of the
> >ordinary MC6809, or do they reduce the number of cycles for the longer
> >instructions.  The former is not desirable in many cases since memory
>   [Heavy duty line eating]
> 
>   The versions that are put out are designed to do work at faster clock
>   speeds.  There aren't any V20's of the 6809 variety from what I have
>   read.

Thank God for that.... what the 6809 world doesn't need is a chip with an
incomplete instruction set that barfs when a programmer uses an undocumented
(but quite usable) opcode!

Two weeks after putting a V20 in my Tandy... I put the 8088 back in!
Besides... since buying a Coco 3 I was surprised to find the 2 MHz 6809
executed comparable routines faster than the 5 MHz 8088!...  Oh well...
I plan on getting a 386 in a few months anyway....

			   - Joe Applegate -

    ======================STANDARD DISCLAIMER============================
     All views and opinions are my own and do not represent the views or
     opinions of the Colorado School of Mines, whatever they might be.
    =====================================================================