Path: utzoo!attcan!uunet!peregrine!elroy!ames!mailrus!tut.cis.ohio-state.edu!bloom-beacon!apple!dan
From: dan@Apple.COM (Dan Allen)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Using the 68020 Cache
Message-ID: <16066@apple.Apple.COM>
Date: 24 Aug 88 21:50:30 GMT
References: <5348@ut-emx.UUCP>
Reply-To: dan@apple.com.UUCP (Dan Allen)
Organization: Apple Computer Inc, Cupertino, CA
Lines: 15

In article <5348@ut-emx.UUCP> jdm@ut-emx.UUCP (Jim Meiss) writes:
>
>A couple of (possibly) naive questions:
>	How big is the Cache on the 68020?
256 bytes for program instructions, 0 bytes for data

>	How can I be sure that my inner loop is
>small enough to fit in the Cache? I'm writing code in

Make sure your sensitive routine fits in 256 bytes.  This is best done
with something like dumpObj in MPW, or looking at the routine with the
disassembler in MacsBug.

Dan Allen
Apple Computer