Path: utzoo!attcan!uunet!husc6!cmcl2!nrl-cmf!ames!oliveb!sun!pepper!cmcmanis From: cmcmanis%pepper@Sun.COM (Chuck McManis) Newsgroups: comp.sys.amiga.tech Subject: Re: 5.25" drive question Message-ID: <63738@sun.uucp> Date: 10 Aug 88 18:42:28 GMT References: <13132@agate.BERKELEY.EDU> Sender: news@sun.uucp Reply-To: cmcmanis@sun.UUCP (Chuck McManis) Organization: Sun Microsystems, Mountain View Lines: 22 [I nominate this one for the intro posting. :-)] In article <13132@agate.BERKELEY.EDU> johnf@sag4.ssl.berkeley.edu () writes: >I just can't seem to get the computer to mount the drive properly. Any takers? >john flanagan When connecting a 5.25" disk drive to your Amiga you need to take into account the "Drive ID." This is the signal that the drive sends back to the Amiga to tell the Amiga if it is an 80 track or 40 track drive. In the Amiga schematics this is implemented as a flip-flop for the 5.25" drive that returns 1010101010 as opposed to the 3.5" drives which return 11111111. When you leave this circuit out you get the 1111111 pattern and so your Amiga thinks it is a 3.5" drive with 80 tracks. Of course the A1000 schematics package from CATS includes the schematic for the little board they put on the A1020 drive, and that is the best place to get the information from. [You know the litany $20 to CATS, 1200 Wilson Dr, West Chester, PA, 19380] --Chuck McManis uucp: {anywhere}!sun!cmcmanis BIX: cmcmanis ARPAnet: cmcmanis@sun.com These opinions are my own and no one elses, but you knew that didn't you.