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From: motsea@amc.UUCP (Motorola Seattle )
Newsgroups: comp.sys.m68k
Subject: Re: Fast 68000s?
Message-ID: <541@amc.UUCP>
Date: Fri, 30-Oct-87 13:59:43 EST
Article-I.D.: amc.541
Posted: Fri Oct 30 13:59:43 1987
Date-Received: Wed, 4-Nov-87 23:24:46 EST
References: <7487@dartvax.UUCP> <2649@cbmvax.UUCP>
Reply-To: motsea@amc.UUCP (Motorola Seattle (guest account))
Organization: Applied Microsystems Corp., Redmond, WA.
Lines: 36

In article <2649@cbmvax.UUCP> daveh@cbmvax.UUCP (Dave Haynie) writes:
>in article <7487@dartvax.UUCP>, stevel@dartvax.UUCP (Steve Ligett) says:
>> 
>> Why are there no 68000s faster than 12.5 MHz?
>
>Thompson makes a 16MHz 68000.

A close look at the specs is appropriate in this case. You be the judge...

>> Is it a marketing decision, or an engineering one?  Does the 68HC000 use the
>> same CMOS technology as the 68020?
>Probably both.  The NMOS 68000 can't likely be pushed any faster.  The

Motorola realizes the NMOS can't efficiently be pushed past 12.5 MHz, which is
why we don't offer such a device.  IF a sufficiently large market were to exist
[or perhaps develops]for a 16 MHz 68k, the device that would be offered would
be the CMOS version.  It is mostly marketing decision...

>Motorola let you settle for a 20MHz 68000 at $15.00, when they can sell you
>a 20MHz 68020 for $300.00?

20MHz 68k's aren't likely, regardless of the cost, which would be more than
$15, to be sure...

>>      Steve Ligett  stevel@dartmouth.edu  or
>> (decvax harvard ihnp4 linus true)!dartvax!stevel
>-- 
>Dave Haynie     Commodore-Amiga    Usenet: {ihnp4|caip|rutgers}!cbmvax!daveh
>   "The B2000 Guy"              PLINK : D-DAVE H             BIX   : hazy
>    "Computers are what happen when you give up sleeping" - Iggy the Cat

			...mark konopacky   fae   motorola   seattle
			email:  ...uw-beaver!tikal!motsea!mark

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