On Tuesday, July 29, 2003, at 08:00 PM, Compact Macs wrote:
Date: Mon, 28 Jul 2003 19:35:53 -0400 Subject: Re: Chaining internal floppy drives - is it possible? From: Ian Primus <[EMAIL PROTECTED]> In-Reply-To: <[EMAIL PROTECTED]> Message-Id: <[EMAIL PROTECTED]>
I thought about that, but the Macintosh knows the difference between internal and external floppy drives, which leads me to believe that they would be on separate busses, or at least have different connections to the IWM chip. I tried testing between the floppy connectors on a Macintosh SE logic board, but couldn't really conclude much of anythings, I am pretty sure that I am getting false readings because of the rest of the circuitry on the board.
Check the Apple developer notes at http://developer.apple.com/technotes/ One of the older notes has a pretty comprehensive description about how the Mac uses address lines to determine which floppy drive is which.
Phil
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