Path: utzoo!censor!geac!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uunet!zephyr.ens.tek.com!tektronix!sequent!jimp
From: jimp@sequent.UUCP (James Pilcher)
Newsgroups: sci.electronics
Subject: Re: Minimum requirements for CPU
Message-ID: <50574@sequent.UUCP>
Date: 15 Jan 91 16:28:06 GMT
References: <12610@hubcap.clemson.edu>
Reply-To: jimp@crg1.UUCP (James Pilcher)
Organization: Sequent Computer Systems, Inc
Lines: 25

In article <12610@hubcap.clemson.edu> tdaniel@hubcap.clemson.edu (tod daniels) writes:
>
>I've just started a project which will require some sort of control device
>which must be capable of collecting data and storing it, then manipulating
>it.
>
>I would like to use an 8085, and I'd like to know what are the bare essentials 
>for running this chip??  I only need a small amount of RAM, some ROM, a way
>to read brief ASCII data, and a way to poll about four different on/off
>switches.  Would I be better of to find a chip with on-chip ROM, RAM, and I/O??
>Or should I go for the 8085 with as many chips as are necessary to make this
>project work??
>
>If this all seems a little vague, e-mail me for more specs.
>
>Thanks...
>
>	tod daniels -- tdaniel@hubcap.clemson.edu 

it seems to me you need an intel 8051. this has 128 bytes of onboard 
"registers", is available with eprom, and has 24 bits of i/o ports,
all on one chip. it would give you a much lower chip count, and is
a well proven chip.

helpfully, jimp