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From: wilson@media-lab.MEDIA.MIT.EDU (Wilson Chan)
Newsgroups: comp.arch
Subject: i860 instruction cache
Message-ID: <3142@media-lab.MEDIA.MIT.EDU>
Date: 11 Aug 90 20:02:08 GMT
Reply-To: wilson@media-lab.media.mit.edu (Wilson Chan)
Distribution: usa
Organization: MIT Media Lab, Cambridge MA
Lines: 9

Hi!  I have a dumb question about booting up an i860.  In the hardware
reference manual, under section 8.9.2 Certain Gotchas when Debugging with i860
Microprocessor, it says "After reset, the instruction and data cache may
contain data so the cache flush procedure should be used to reset the
instruction and data cache."  How do I get the boot code into cache in the
first place?  Is there a possibility that the cache contains random data and
"thinks" that the boot location (0xffffff00) is cached and refuses to read the
real boot code?

Wilson Chan				wilson@athena.mit.edu