Messages in this thread | | | Subject | Re: Suitable chipset for a pocket linux box | Date | Thu, 29 Jan 1998 13:49:48 +0000 (/etc/localtime) | From | Matti Aarnio <> |
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> On Wed, 28 Jan 1998, Claude Robitaille wrote: > > Or the ColdFire serie, again from Motorola. They just announced a new > > version, the MCF5307 which has cache, 2 serial port, DRAM controler, > > IO, debug port, some internal ram, timer, etc. It is cheap (15-20$) and > > very performant for the price (70 MIPS). Finally, GNU C compiler is > > ported. > > > > The ColdFire serie a basically a 68000 with some instructions removed to > > make the chip much smaller and much more performant (like 20X for > > the 5307). > > The worst thing is they removed the MMU :-(
No, the basic 68000 DOES NOT have MMU, thus they removed nothing. The first CPU in 68K series with internal MMU is 68030.
Now I wonder why you would want to have a MMU in an embedded application system.. I do think the MMU is something for multi-user time-shared systems, and not space-constrained, and possibly power-constrained gadgets. (Sure it would be "cool" to have Linux running at my wrist- watch and show the time thru X, but why I should burn all those wats of power ? Just to keep my wrist warm ?)
> Greetings, > Geert
/Matti Aarnio <matti.aarnio@tele.fi>
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