Path: utzoo!mnetor!uunet!husc6!rutgers!ames!oliveb!sun!pepper!cmcmanis
From: cmcmanis%pepper@Sun.COM (Chuck McManis)
Newsgroups: comp.sys.amiga
Subject: Re: Piggyback CPU boards
Message-ID: <36064@sun.uucp>
Date: 10 Dec 87 01:06:00 GMT
References: <2118@crash.cts.com>
Sender: news@sun.uucp
Reply-To: cmcmanis@sun.UUCP (Chuck McManis)
Organization: Sun Microsystems, Mountain View
Lines: 21

In article <2118@crash.cts.com> spierce@pnet01.cts.com (Stuart Pierce) writes:
>A friend of mine added a 68020/68881 board to his Amiga 500.  All of the games
>that we tried broke.  I don't know whether this is because of the heavy
>copy-protection on the software, or what, but it has discouraged me from even
>considering a board of this type.

Generally, people who write games have the annoying habit of ignoring all
the rules in the interest of speed. Invariably this breaks when the user
upgrades the system. (Which is why the rules are there in the first place).
What usually gets people is the Move SR, instruction which is privledged
in the '020. If they had bothered to use the exec GetCC() function 
it would not be a problem. The other problem is that these programmers
often have is that they use software timing loops that on the '020 make
no sense at all. So the bottom line is if you just want to play games
an '020 is not for you. It does however make compiles go faster.



--Chuck McManis
uucp: {anywhere}!sun!cmcmanis   BIX: cmcmanis  ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.