Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!pasteur!agate!saturn!ucscb.UCSC.EDU!spcecdt
From: spcecdt@ucscb.UCSC.EDU (Space Cadet)
Newsgroups: comp.sys.ibm.pc
Subject: Re: V20 info wanted
Message-ID: <4429@saturn.ucsc.edu>
Date: 7 Aug 88 00:21:24 GMT
References: <690@ritcv.UUCP>
Sender: usenet@saturn.ucsc.edu
Reply-To: spcecdt@ucscb.UCSC.EDU (Space Cadet)
Organization: University of California, Santa Cruz; CATS
Lines: 30

In article <690@ritcv.UUCP> kfk9673@ritcv.UUCP (Karl Kingston) writes:
>
>	1) How much faster is a V20 over a 8088?  What kind of speed can
>           I expect to get in MHz?
>
>        2) Is the V20 compatible with the V20?
>        3) What works and what doesn't work with a V20 (Softwarewise)
>        4) What's good and bad about a V20?
>Thanks..
>Karl Kingston

	 I replaced my 8088 with a V20 about a year ago.  
	1) The V20 will operate at exactly the same clock rate as your current 8088,
unless you change the clock which doesn't sound like it is part of your
plan.  The V20 carries out some operations in fewer clock cycles that the 8088,
so programs will run faster with it.  Norton's sysinfo says my system is 33%
faster with the V20, which is absurd; he must be using some particularly
sensitive instructions.  I'd say it is actually 5% to 20% faster, depending on
the software I'm using.
	2) umm....?
	3) In my experience everything that works with an 8088 will work with
a V20.
    4)  There isn't much other difference between them.  I think some early
copy-protection schemes choked on a V20 because of their time-sensitive
aspects, but I believe that has been taken care of.  Also, the V20 has an
8080 emulation mode, though this is really only useful if you want to use 
one of the CP/M emulators that depend on this capability.
    Altogether, I was certainly well worth it since I got about a 10% average
increase in capability for 1% of the cost of my system ($10).
--
> John H. DuBois III # spcecdt@ucscb.ucsc.EDU  ...!ucbvax!ucscc!ucscb!spcecdt <