[comp.sys.amiga.tech] 68881 Interfacing to 68000

bevis@EE.ECN.PURDUE.EDU (Jeff Bevis) (01/16/90)

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. |
+--------------------------------+--------------------------------------------+