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From: mwm@eris.UUCP
Newsgroups: comp.sys.amiga
Subject: Re: Some thoughts and questions about the Ranger
Message-ID: <2748@jade.BERKELEY.EDU>
Date: Tue, 10-Mar-87 15:15:16 EST
Article-I.D.: jade.2748
Posted: Tue Mar 10 15:15:16 1987
Date-Received: Thu, 12-Mar-87 21:38:32 EST
References: <140@tahoma.UUCP> <782@ssc-bee.ssc-vax.UUCP>
Sender: usenet@jade.BERKELEY.EDU
Reply-To: mwm@eris.BERKELEY.EDU (Mike (No one lives forever.) Meyer)
Organization: Missionaria Phonibalonica
Lines: 21
Keywords: 14MHz Blitter

In article <782@ssc-bee.ssc-vax.UUCP> chas@ssc-vax.UUCP (Chas Boyd) writes:
>	Dave goes on to show a wish list for the NEXT Amiga, based on a 14MHz
>   68020.  One thing he does not specifically mention is a 14MHz blitter.

Rumor has it that the Sun3 has a blitter that nobody uses, because blitter
setup time + blit time is greater than doing it with the 68020.

Given that most blitter-type operations can be done in small loops,
and the cache on the 68020 being large enough to hold small loops,
this makes sense. After the first pass through the loop, it runs out
of cache, so the time to do memory fetches/stores dominates.

Someone from Sun (hi, chuck) care to comment?

	<mike

--
But I'll survive, no you won't catch me,		Mike Meyer
I'll resist the urge that is tempting me,		ucbvax!mwm
I'll avert my eyes, keep you off my knee,		mwm@berkeley.edu
But it feels so good when you talk to me.		mwm@ucbjade.BITNET