Article View: sci.electronics
Article #5343Re: MC68705 development
From: John Moore
Date: Mon, 30 Jul 1990 03:23
Date: Mon, 30 Jul 1990 03:23
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In article <1990Jul29.201446.23082@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes:
]Motorola is happy to supply schematics and board layout for a programming
]board that takes an EPROM and a 68705 and has the 68705 transfer the
]contents of the EPROM to the 68705's EPROM. In fact, that is the only way
]to program the 68705; it has to program itself, you can't do it externally.
]Given this, the problem is reduced to programming an EPROM, for which
]innumerable solutions are available.
I've been programming them for years by loading a RAM from the printer
port of my computer, then flipping a switch which causes the 68705R3
to program itself from the RAM.
--
John Moore HAM:NJ7E/CAP:T-Bird 381 {ames!ncar!noao!asuvax,mcdphx}!anasaz!john
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!mailrus!iuvax!cica!tut.cis.ohio-state.edu!cs.utexas.edu!asuvax!anasaz!john From: john@anasaz.UUCP (John Moore) Newsgroups: sci.electronics Subject: Re: MC68705 development Message-ID: <2800@anasaz.UUCP> Date: 30 Jul 90 03:23:34 GMT References: <billq.649042503@s.ms.uky.edu> <1990Jul29.201446.23082@zoo.toronto.edu> Reply-To: john@anasaz.UUCP (John Moore) Organization: Anasazi, Inc. Lines: 15