Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!think.com!linus!nixbur!nixpbe!ugun13!ugum01!josef From: josef@nixpbe.nixdorf.de (josef Moellers) Newsgroups: sci.electronics Subject: Re: Minimum requirements for CPU Message-ID: Date: 17 Jan 91 08:25:34 GMT References: <12610@hubcap.clemson.edu> Sender: news@ugun13.UUCP Lines: 27 In <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?? I've used the Z8 from Zilog. With the BASIC interpreter (don't know the exact type), I could build a small system (of limited use) with a Z8 and a MAX232 and a +5V power supply. BTW there is a version of the MCS31 chips: 8052-BASIC which also comes with a BASIC interpreter. You might consider this option , if speed is uncritical and the lower price of software development jsutifies the higher chip price. -- | Josef Moellers | c/o Siemens Nixdorf Informationssysteme AG | | USA: mollers.pad@nixdorf.com | Abt. STO-XS 113 | | !USA: mollers.pad@nixdorf.de | Heinz-Nixdorf-Ring | | Phone: (+49) 5251 104662 | D-4790 Paderborn |