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- Newsgroups: comp.sys.amiga.hardware
- Path: admaix.sunydutchess.edu!ub!dsinc!scala!news
- From: dave.haynie@scala.com (Dave Haynie)
- Subject: Re: Amiga vs. PC
- Sender: news@scala.scala.com (Usenet administrator)
- Message-ID: <1996Mar5.170716.9486@scala.scala.com>
- Date: Tue, 5 Mar 1996 17:07:16 GMT
- Reply-To: dave.haynie@scala.com (Dave Haynie)
- References: <4glavu$dlq@hasle.sn.no> <4glb5c$dlq@hasle.sn.no> <hwollman-2602961155360001@hwollman.mitre.org> <Joaquin_Menchaca-0103962126590001@17.127.19.156>
- Nntp-Posting-Host: gator
- Organization: Scala Computer Television, US Research Center
-
- In <Joaquin_Menchaca-0103962126590001@17.127.19.156>, Joaquin_Menchaca@quickmail.apple.com (Joaquin Menchaca) writes:
- >In article <hwollman-2602961155360001@hwollman.mitre.org>,
- >hwollman@mitre.org (Herbert Wollman) wrote:
-
- >> In article <4glb5c$dlq@hasle.sn.no>, egilberg@oslonett.no wrote:
-
- >> > Why is the Amiga 500 better than the PC (for playing games)?
- >>
- >> The Amiga is better than the PC (for playing games) because IT WAS
- >> DESIGNED to be the "absolute Killer Game Machine", then converted into a
- >> computer when the game market dried up. Games are usually graphics
- >> intensive, real-time simulations, and everything about the Amiga was
- >> designed to work together as a system to do this very well.
-
- >Really 32bit real-time multitasking.
-
- Absolutely. The Amiga OS has been a 32-bit clean preemptive
- multitasking OS since its release in 1985.
-
- While the OS has never been strictly qualified for realtime operation,
- it could have been. It wasn't, by choice, because once you produce the
- realtime parameters for an OS, it's expected that these won't
- change. The Amiga Software Group felt that there was little advantage
- in the Amiga's market to producing hard realtime qualification
- paramaters, and so they could avoid the headache of strictly adhering
- to such a qualification in the future. As it turns out, the OS's
- realtime performance over time got better anyway.
-
- >How is that done on a 16bit 7Mhz 68000 processor?
-
- The 68000 is really a hybrid 32/16-bit processor, and it's got its
- 32-bit stuff where it counts. From the point of view of the software
- model, the 68000 is a 32-bit processor, virtually indistinguishable
- from a 68030 or other "fully 32-bit" version of the 680x0
- architecture. This is radically different from the x86 family, where
- the 16-bit CPUs had a different programming model than the 32-bit
- versions.
-
- The "16-bit-ness" of the 68000 is seen only as implementation details
- of the hardware. It has a 16-bit data path to hardware, and
- internally, the ALUs (three of them) are 16-bits wide. So on a 68000,
- 32-bit instructions take longer to run, since the ALUs have to team
- up. Those same instructions run at full speed on a 68030 or 68040, for
- example. But since they're the same instructions, it was possible for
- the Amiga OS to be a 32-bit clean OS from the get-go.
-
- The effect of this is that there's no of the compatibility baggage you
- need to keep MS-DOS programs running in 32-bit MS-Windows.
-
- Dave Haynie | ex-Commodore Engineering | for DiskSalv 3 &
- Sr. Systems Engineer | Hardwired Media Company | "The Deathbed Vigil"
- Scala Inc., US R&D | Ki No Kawa Aikido | info@iam.com
-
- "Feeling ... Pretty ... Psyched" -R.E.M.
-
-