Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!haven!umbc3!cbw1!brian
From: brian@cbw1.UUCP (Brian Cuthie)
Newsgroups: sci.electronics
Subject: Re: SCSI Bus incompatibilities
Message-ID: <127@cbw1.UUCP>
Date: 4 Jan 89 17:10:40 GMT
References: <2793.23E998ED@mailcom.FIDONET.ORG>
Reply-To: brian@cbw1.UMD.EDU (Brian Cuthie)
Organization: CBW, Columbia, MD 21046
Lines: 31

In article <2793.23E998ED@mailcom.FIDONET.ORG> postmaster@mailcom.FIDONET.ORG (Bernard Aboba) writes:
>As a Mac user, I've become very enamored of the SCSI bus.  In particular, 
>I like the ability to attach (and easily remove) hard drives, and other 
>devices from the bus, and trasport them to other computers.  
>Now I'm looking into getting a SCSI controller for my PC.  I thought that 
[...]
>actually implement the full SCSI standard.  Therefore the embedded SCSI 
>controllers often don't or can't respond to the full SCSI command set.
> 

This is true.  Almost NO controllers implement all SCSI commands.  For one
thing, there are different command sets for different devices, like printers
and tapes.  There is however a subset called the Common Command Set (CCS).
Almost all devices today (especially disks) will handle CCS commands
correctly.  

The full SCSI spec and the CCS are available from:
	
	William E. Burr (X3T9.2 Chairman)
	U. S. Department of Commerce
	National Bureau of Standards
	Technology A-216
	Gaithersburg, MD 20899
	(301) 921 - 3723

-brian


-- 
Brian D. Cuthie                                 uunet!umbc3!cbw1!brian
Columbia, MD                                    brian@umbc3.umd.edu