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- Path: sparky!uunet!dtix!darwin.sura.net!gatech!ukma!rutgers!cbmvax!daveh
- From: daveh@cbmvax.commodore.com (Dave Haynie)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: A3000 local bus
- Message-ID: <35100@cbmvax.commodore.com>
- Date: 14 Sep 92 17:14:36 GMT
- References: <AHANSFOR.92Sep11001120@wpi.wpi.edu> <ERICJ.92Sep11094228@manila.cfsat.Honeywell.COM>
- Reply-To: daveh@cbmvax.commodore.com (Dave Haynie)
- Organization: Commodore, West Chester, PA
- Lines: 48
-
- In article <ERICJ.92Sep11094228@manila.cfsat.Honeywell.COM> ericj@hwcae.Honeywell.COM (Eric Jacobsen) writes:
-
- >The 030 and 020 buses are basically the same. An EC030 would be a good
- >choice for a low end machine.
-
- Basically, the '030 bus is a superset of the '020 bus. You can drop an '030
- into anything an '020 goes into, but the '020 can't necessarily replace the
- '030 in an '030-specific system.
-
- >I am continually amazed at C='s decisions to continue putting 68000 cpus in
- >new machines (A600, A2500, etc., etc.)
-
- The A2500 came out in 1988, that's hardly a new machine. And, while it did
- have a 68000 fallback CPU, the main processor was a 14.3MHz 68020. In 1989,
- that was upgraded to a 25MHz 68030.
-
- The A600 is a low end machine. As long as the OS will run on a 68000 and
- the 68000 is noticably cheaper than a 68020, it makes sense to build cheaper
- and cheaper 68000 machines. Plenty of people will buy a $200 computer who
- wouldn't buy a $500 or $1000 computer -- that's one reason we sold 3 million
- C128s before we sold half a million Amigas. If Motorola builds a 32-bit 680x0
- that makes sense to the low end folks, I'm sure they'll use it instead of the
- 68000.
-
- >*Nobody* makes PCs with 8086s anymore,
-
- I'm sure HP and nearly every other "Palmtop" computer maker would take issue
- with that.
-
- >and there are *very* few 80286 machines being made anymore.
-
- I'm sure Tandy and most of the other "home PClone" makers would find that
- kind of funny, too. Sure, older processors eventually yield to newer ones,
- but just because the hottest thing on the block is based on [X]XX4XX[X] or
- whatever, don't assume there's no use for the older systems. Also, the '286
- is faster than the '386 at the same clock speed on 8088 code -- the reasons
- for '386SX are [a] Only Intel could make '386s back when AMD started building
- fast '286 clones and [b] the '386 software model finally moves into the 80's
- in terms of programmer's model -- the 680x0 family has always been there.
-
- >(Are there even any Macs with 68ks anymore?)
-
- I don't know, but they do make 16-bit systems with '030s in them, which are
- only marginally faster than 68000 systems as the same clock speed.
- --
- Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
- {uunet|pyramid|rutgers}!cbmvax!daveh BIX: hazy
- "Work like a horse, drink like a fish" - Psychefunkapus
-