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From: glenn@gla-aux.uucp (Glenn Austin)
Newsgroups: comp.sys.mac.hardware,comp.sys.m68k
Subject: Re: 68040 for 68030 substitution (question)
Message-ID: <0E010021.3qektg@gla-aux.uucp>
Date: 12 Jun 91 06:39:25 GMT
Reply-To: glenn%gla-aux.uucp@skinner.cs.uoregon.edu
Organization: The Pit Lane
Lines: 24
X-Mailer: uAccess - Mac Release: 1.0.4a


In article <1991Jun11.021641.6346@netcom.COM>, png@netcom.COM (Peter Glaskowsky) writes:
> Actually, the Motorola "MC68040 Designer's Handbook" (MC68040DH/AD),
> a snazzy slip-cased 3-ring binder, contains a section entitled "MC68040
> to MC68030 Bus Adapter Application".
> 
> There's a complete schematic with part numbers, and equation files for
> all the PALs in the design. In short, it describes 100% of the necessary
> hardware. There are some limitations; some of the bus interface
> protocols are necessarily different, but these can be overcome with
> the addition of some firmware and/or system software patches.

Actually, their bus interface doesn't work.  They also tell designers to
do some things that cause the Mac peripherals (such as the on-board video)
to *BREAK*.

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| Glenn L. Austin                | "Turn too soon, run out of room.           |
| Macintosh Wizard and           |    Turn too late, much better fate."       |
| Auto Racing Driver             |   -- Jim Russell Racing School Instructors |
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