Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!sco!deanr From: deanr@sco.COM (Dean Reece) Newsgroups: sci.electronics Subject: Re: IEEE488 a.k.a. GP-IB a.k.a HP-IB, references, help, query. Message-ID: <7535@scolex.sco.COM> Date: 22 Aug 90 17:59:28 GMT References: Sender: news@sco.COM Organization: The Santa Cruz Operation, Inc. Lines: 31 In article tims@acflanl.infidel.lanl.gov (Tim Sullivan) writes: >I am going to build a microprocessor-based temperature controller. >Ideally, to fit into our current laboratory set-up it should have an >IEEE488 interface. I've been unable to find much information on how to >go about doing this. I've found data sheets for bus transceiver chips, >but is there a chip that will handle most of the protocol as well? Can >anyone guide me toward data on such a chip? Has anyone seen a tutorial >article on building an IEEE-488 device? Any references would be >greatly appreciated. Try the Motorola 68488. It is a 40 pin device that handels all the IEEE-488 stuff. All you need to add is an 8 bit (or larger) CPU and the drivers you discussed in your post. It fairly complex to write a device driver for, but it does do a lot itself. The book I learned my share of IEE488/GPIB/HPIB stuff from is called something like _The S100 and Other (Micro Computer) Busses_. It has a short section of about 10 to 20 pages each on about a dozen popular busses. The IEEE488 section is fairly informative. The motorola spec for the 68488 (this is an 8 bit part despite its 68xxx designation) is also informative, but it assumes some knowledge of the interface before reading. Oh, finding the 68488 is a bit difficult, and I needed the 'B' (2 mhz) part, so I had to get one sampled from Motorola (or buy 25 from a large supplier). >Thanks, You're Welcome. I hope you find the information usefull. -Dean Reece -deanr@sco.com