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From: jeff@gatech.CSNET (Jeff Lee)
Newsgroups: net.micro.6809,net.micro,net.micro.atari16,net.micro.amiga
Subject: Re: New CoCo-III's Market Niche (long)
Message-ID: <4286@gatech.CSNET>
Date: Fri, 8-Aug-86 15:05:51 EDT
Article-I.D.: gatech.4286
Posted: Fri Aug  8 15:05:51 1986
Date-Received: Sun, 10-Aug-86 04:52:01 EDT
References: <1040@ihwpt.UUCP> <580@cbmvax.cbmvax.cbm.UUCP>
Reply-To: jeff@gatech.UUCP (Jeff Lee)
Organization: School of Information and Computer Science, Georgia Tech, Atlanta
Lines: 25
Xref: watmath net.micro.6809:940 net.micro:15312 net.micro.atari16:1578 net.micro.amiga:4252

>is running faster memory cycles than a standard or XT PClone.  If Motorola
>had the forsight to add on-chip banking like in the 8088, the 6809 would
>have had a good chance of catching on as THE 8/16 bit chip.
 
>> ...possibly with the memory mapping and protection that the
>> 68K pc's lack.
 
>Has TRS announced an MMU chip for the CoCo-III?  Last I heard, none of the 
>6809 suppliers (Motorola, Hitachi, etc.) had.
 
I assume that you must be disqualifying the 6829 (or was it the 6839)
memory management chip for some reason. This chip provided expanded
memory and protection for multiple processes on the 6809. It's also
cheap (about $5 a piece).

If any of you want this chip, you had better hurry up and call your
Motorola dealer and have them get them. They are being dropped this
year. The figuring is that why should you stifle yourself with an 8-bit
processor and banking memory when for close to the same money you can
go with a 68008, use your 8-bit peripherals, have a 20-bit linear
address space and the 68000 instruction set.
-- 
Jeff Lee
CSNet:	Jeff @ GATech		ARPA:	Jeff%GATech.CSNet @ CSNet-Relay.ARPA
uucp:	...!{akgua,allegra,hplabs,ihnp4,linus,seismo,ulysses}!gatech!jeff