Article View: comp.sys.amiga.tech
Article #277968881 Interfacing to 68000
From: Jeff Bevis
Date: Tue, 16 Jan 1990 14:59
Date: Tue, 16 Jan 1990 14:59
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1247 bytes
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. | +--------------------------------+--------------------------------------------+
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!EE.ECN.PURDUE.EDU!bevisShow Full Headers
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Path: arc1-ca.pugleaf.net!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