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From: bobh@pedsgd.UUCP (Bob Halloran)
Newsgroups: net.micro.amiga,net.micro.atari
Subject: Re: Reply to: Questions about ST vs. AMIGA
Message-ID: <382@pedsgd.UUCP>
Date: Thu, 19-Dec-85 10:53:30 EST
Article-I.D.: pedsgd.382
Posted: Thu Dec 19 10:53:30 1985
Date-Received: Fri, 20-Dec-85 05:37:57 EST
References: <342@unmg.UUCP> <840@h-sc1.UUCP> <352@well.UUCP>
Distribution: net
Organization: CONCURRENT Computer Corp, Tinton Falls, NJ
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Xref: watmath net.micro.amiga:1210 net.micro.atari:2035

In article <352@well.UUCP> farren@well.UUCP (Mike Farren) writes:
>In article <840@h-sc1.UUCP>, breuel@h-sc1.UUCP (thomas breuel) writes:
>> It would be much more helpful if you stated WHY you believe that the
>> AMIGA is better than the ST. Since I may buy a new computer soon, I
>> would like to hear real information about the two machines. So far, the
>> main differences appear to be:
>> 
>> (b) the AMIGA has better special-purpose graphics capabilities than the
>>     ST, but at the expense of main CPU speed.
>
>    Absolutely false.  The graphics capability is achieved with co-processors
>    which tend to let the CPU run at full speed much more often than if the
>    CPU were responsible for display updates.  Note that the coprocessors
>    also allow I/O to proceed independently of the CPU, as well.

Granted, the graphics chips relieve the 68000 from dealing with the
display, as it must in the Mac, but the 68000 and the various co-processors
must still contend for access to memory.  YES, I/O can proceed independently,
etc., but only ONE of the processors can use memory at a time.  This
HAS to impact the throughput of the 68000.

BTW, the ST also has an I/O co-processor, so presence vs. non-presence
arguments in favor of the Amiga are inappropriate.

					Bob Halloran
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Disclaimer: My opinions are my own.
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