Path: utzoo!attcan!uunet!husc6!mailrus!purdue!decwrl!spar!snjsn1!bilbo!greg
From: greg@bilbo (Greg Wageman)
Newsgroups: comp.sys.atari.st
Subject: Re: Media Change Bug
Message-ID: <453@snjsn1.SJ.ATE.SLB.COM>
Date: 15 Sep 88 23:24:55 GMT
References: <7896@trwrb.UUCP>
Sender: news@SJ.ATE.SLB.COM
Reply-To: greg%sentry@spar.slb.com (Greg Wageman)
Organization: Schlumberger ATE, San Jose, CA
Lines: 32

In article <7896@trwrb.UUCP> gibson@trwrb.UUCP (Gregory S. Gibson) writes:
>I have the media change bug on my Mega 2. (The escape key does not always
>update the drive A directory when write protection is enabled).
>
>My Mega 2 is still under warranty.  I am having trouble getting it repaired.
>Although my dealer was not aware of the problem, he replaced by drive.
>However, I still have the problem.  
>Who can my dealer talk to at Atari to get information on the media change
>bug?  My dealer claims he talked to Atari without success. .  Although my
>dealer is an authorized Atari dealer, he is not a knowledgeable dealer.
>
>What is the fix for the media change bug?  I thought replacing the drive
>would fix  the media change bug.

Replacing the drive would fix the problem if you had one.  The
behavior you describe is the *normal* behavior for a stock ST.  The
media change bug exists when a write-ENABLED floppy disc is removed,
and another disc inserted, and the machine does not detect the change.

The glitch on the write protect line, which TOS polls during VBI,
(Vertical Blanking Interrupt) isn't long enough to be detected with
write-protected discs.  However, it isn't a serious problem since you
can't write to the disks and therefore won't clobber them.


Greg Wageman			ARPA:  greg%sentry@spar.slb.com
Schlumberger Technologies	BIX:   gwage
1601 Technology Drive		CIS:   74016,352
San Jose, CA 95110		GEnie: GWAGEMAN
(408) 437-5198			UUCP: ...!decwrl!spar!sentry!greg
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