Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!purdue!decwrl!jumbo!ehs
From: ehs@jumbo.dec.com (Ed Satterthwaite)
Newsgroups: comp.sys.m68k
Subject: Re: Simple M68000 design wanted
Summary: other references
Keywords: M68000
Message-ID: <13631@jumbo.dec.com>
Date: 10 Mar 89 22:02:16 GMT
References: <520@qantel.UUCP> <25975@cornell.UUCP>
Distribution: na
Organization: DEC Systems Research Center, Palo Alto
Lines: 36

> In article <25975@cornell.UUCP>, rbrown@svax.cs.cornell.edu (Russell Brown)
> writes:
> In article <520@qantel.UUCP> jerry@qantel.UUCP (Jerry Gardner) writes:
> 
> >I am looking for a simple design for an M68000 system that I can adapt for
> 
> There's a pretty good design for an M68000 single-board system in the book by
> Wilcox (I can't remember the name of the book, but it's red ...

The title is "68000 Microcomputer Systems: Designing and Troubleshooting"
by Alan D. Wilcox.  It seemed pretty reasonable to me too.  The book is
organized around two similar projects: a simple SBC with EPROM, SRAM and
6850 ACIA, and a slightly more sophisticated processor board for an
S-100(!) system.

Another book of possible interest is "Microprocessor-based Design" by
Michael Slater, which I can also recommend as a general reference.  A
design example that's threaded through the book describes a 68008-based
controller with ROM, SRAM and 68901, as well as a simple keypad/display
user interface.

Either of these books will cost you more than a handful of 68000s.  An
alternative is to mix and match from some Motorola application notes, e.g.

AN867  A High Performance MC68000L12 System with No Wait States
AN896A Serial I/O, Timer and Interface Capabilities of the MC68901
         Multifunction Peripheral
         [illustrated by a simple 68008 system using DRAM]
AN897  MC68008 Minimum Configuration System [also DRAM]

Have you priced memory recently?  The bus and memory width you save going
from a 68000 to 68008 ought to pay for the processor chip.  Better yet,
have you thought about the 68HC11 or something similar?

Ed Satterthwaite
ehs@src.DEC.COM or {...}!decwrl!ehs  (ignore what our mailer says)