Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!bagate!cbmvax!daveh
From: daveh@cbmvax.commodore.com (Dave Haynie)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 14Mhz 68000
Message-ID: <22508@cbmvax.commodore.com>
Date: 17 Jun 91 19:54:23 GMT
References: <7ABF45A76060644B@BNANDP51>
Reply-To: daveh@cbmvax.commodore.com (Dave Haynie)
Organization: Commodore, West Chester, PA
Lines: 37

In article <7ABF45A76060644B@BNANDP51> DET1@BNANDP51.BITNET writes:

>We plan to use a 68010-16 and follow the instructions of a schematic found on
>an archive from this newsgroup.

The first flaw in your plan: Motorola only makes 68010s up to 12MHz.  You can
get 16MHz 68000s.

>        My question is (to all of you) : does anyone have the 68000-16 working
>in his amiga ?

The basic 14/16MHz hacks published around here in the past don't work.  Some
may work under some conditions, but in general, they are nothing but trouble.
A few people may be working on more robust speedup hacks.  If it takes less
than a handful of parts, don't expect it to work.

>                       (to Commodore folks) : does this ugly trick (ugly
>because it makes an Amiga look like an atari ST inside) 

These hacks have nothing to do with an Atari ST.  They are ugly because, in
general, they don't work.  There is a right way and a wrong way to build an
accelerator device for a 68000 based Amiga.  Every released hack I have seen 
so far except LUCAS is Just Plain Wrong.  LUCAS misses here and there, but it's
OK if you know what you're doing, don't have lots of peripherals attached, and
don't mind mucking around with it a bit.

>able to cause some damage in an Amiga (to coprocessors, ram or so) ?

In general, you can't damage anything.  You may find things don't work, and
I wouldn't recommend running a non-functional machine for days on end, since
you may very well have devices confused and operating in a state that could,
over time, cause damage.

-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
	"This is my mistake.  Let me make it good." -R.E.M.