Path: news.weeg.uiowa.edu!news.uiowa.edu!uunet!sun-barr!apple!mumbo.apple.com!apple!apple.com!mattd
From: mattd@apple.com (Matt Deatherage)
Newsgroups: comp.sys.apple2
Subject: Re: ROM 03 mouse problem
Message-ID: <27665@goofy.Apple.COM>
Date: 1 Jul 92 18:13:07 GMT
References: <1992Jun22.173608.200@wsuhub.uc.twsu.edu>
Sender: usenet@Apple.COM
Organization: Developer Technical Support, Apple Computer, Inc.
Lines: 34

In article <1992Jun22.173608.200@wsuhub.uc.twsu.edu>, rgshacke@wsuhub.uc.twsu.edu writes:
> 
> I have noticed that going to the Desk Accessories menu while running native
> mode software on a ROM 03 causes the mouse to lock up on return to the
> application. It comes back when that application is exited. That does not
> happen with 8 bit software. Is this what the ROM 03 mouse fix in AOL is for?
> Is this a system software thing? I'm running 6.0 (of course!) Is it something
> that's going to be fixed in a new release?
> -- 
> Randy Shackelford                       "That's right, just keep tap dancing
> rgshacke@wsuhub.uc.twsu.edu              on the minefield"  -  Al Bundy

This happens in ProTERM 3.0 as well, and I don't know if it's the fault of 
the 8-bit apps or the Desk Manager, but:

The Desk Manager is saving a slot 4 screen hole as the "current mouse mode"
when you enter the CDA menu, and P8 programs which use the mouse tend to
leave a non-zero value in that byte, so it makes the Desk Manager think
the mouse wasn't turned on when it "restores" it on leaving the CDA menu.

Geek workaround:  Enter GSBug and type "N" to enter Nifty List without going
through the CDA menu.  Type "_SetMouse(3)" and exit to GSBug.  Type "0/7FC:0"
to zero the bad screen hole.

User workaround:  Jay Krell wrote an Init that does this in a much more safe
fashion, but no promises it works if you're actually using a mouse _card_.
Download it from GEnie and use it.

============================================================================
Matt Deatherage, Developer Support Center, Apple Computer, Inc.
Personal mail only -- please POST technical questions, questions about
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The opinions I express don't represent Apple, which makes us both happy.