Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!EE.ECN.PURDUE.EDU!bevis
From: bevis@EE.ECN.PURDUE.EDU (Jeff Bevis)
Newsgroups: comp.sys.amiga.tech
Subject: 68881 Interfacing to 68000
Message-ID: <9001161459.AA00962@en.ecn.purdue.edu>
Date: 16 Jan 90 14:59:22 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: Purdue University Engineering Computer Network
Lines: 13

In what manner is a 68881 to be connected to a 68000 (or 68010) in an Amiga
1000?  After perusing the pages of the Motorola M68000 Series manual, I'm left
with more questions than answers.  The 68881 must act as a peripheral
processor to any non-68020/030 processor, right?  OK, I can handle that.  But
what address is decoded for the 881's chip select?  Where is the dang thing
mapped into memory?  Adding a 68881 to a 68000-based system looks like it
would be a snap, except for this ominously missing information.  Help!


+--------------------------------+--------------------------------------------+
| Jeff Bevis 		         | "But I don't like spam!"		      |
| bevis@en.ecn.purdue.edu	 | 	     Give me Amiga or nothing at all. |
+--------------------------------+--------------------------------------------+