Path: utzoo!utgpu!water!watmath!clyde!att!rutgers!gatech!bloom-beacon!mcgill-vision!odyssee!iros1!vedge!lai
From: lai@vedge.UUCP (David Lai)
Newsgroups: comp.sys.amiga.tech
Subject: Re: 5.25" drive question
Summary: rdy line incorrect
Message-ID: <491@vedge.UUCP>
Date: 15 Aug 88 11:07:33 GMT
References: <13132@agate.BERKELEY.EDU>
Reply-To: lai@vedge.UUCP (David Lai)
Organization: Visual Edge Software, St. Laurent, PQ
Lines: 19

In article <13132@agate.BERKELEY.EDU> johnf@sag4.ssl.berkeley.edu () writes:
>
> [says amiga recognizes his 5.25 40tk drive as an 80tk if disk is
>  in and no drive when disk is out at powerup.]
>
>johnf@sag4.ssl.berkeley.edu

Looks like your 'rdy' line is being read by the startup boot code.  It reads
all 1's when a disk is in, and all 0's when no disk implying 1) standard
80tk disk and 0) no drive.  You'll probably have to kludge a circuit to
return alternating 1's and 0's so it recognizes it as a 40tk., or do something
about the rdy line.



-- 
	"What is a DJ if he can't scratch?"  - Uncle Jamms Army
The views expressed are those of the author, and not of Visual Edge, nor Usenet.
David Lai (vedge!lai@larry.mcrcim.mcgill.edu || ...watmath!onfcanim!vedge!lai)