Path: utzoo!mnetor!uunet!nuchat!uhnix1!sugar!ssd
From: ssd@sugar.UUCP (Scott Denham)
Newsgroups: comp.sys.amiga
Subject: Re: HELP!! Adding an A2000 internal 5 1/4" drive
Message-ID: <1520@sugar.UUCP>
Date: 5 Mar 88 09:15:17 GMT
References: <624@pasteur.Berkeley.Edu>
Organization: Sugar Land UNIX - Houston, TX
Lines: 28
Keywords: drives, hardware, interfacing
Summary: No

In article <624@pasteur.Berkeley.Edu>, johnhlee@cory.Berkeley.EDU (John Lee) writes:
> Help!  I'm attempting to interface an IBM compatible 5 1/4" drive (Qume)
> to my B2000 and mount it internally (where a hard drive will eventually go).
> I have the Amazing Computing article (vol. #1, issue #4, I think) and after
> staring at it, it seems easy--too easy!  After perusing the Hardware 
> Reference manual, it states (in the appendix, disk connector interface) that
 (descripton of signal names deleted) 
> my question is:  Is the ID mode used at all, and can I get away without
> it?  Since the Hardware Reference manual (Addison-Wesley) was made for
> the A1000 and a very early version at that, perhaps the ID function was
> ignored under later versions of AmigaDOS.  Thanks in advance!
> 
> 					John Lee
> 
In a word, no. The ID's gotta be there if you want to use the drive as
 a) a half-sized Amiga DOS drive (I.E. you MOUNT it)   or 
 b) with the utilities provided on the 1.2 disk. 
I don't know about DOS-2-DOS or Transformer; I'd assume Transformer would
work, since that's the environment for which the Amazing Computing 
article was intended. You can do the ID mode with the other side of the
'74 you already have for a motor latch - there are a couple of circuit
descriptions floating about on how to do this.
The current versions of the OS are picky indeed about this ID, and if it
isn't there, than neither is the disk drive! It also gets unhappy if you
get your flips and flops wrong trying to generate it! (voice of experience)
 
 
                                            Scott Denham