15 Sep
1998
15 Sep
'98
10:02 p.m.
On 16 Sep 98 at 0:14, Tony Duell wrote:
One interesting 'feature' of the 800K Mac
drive (and I suspect the 400K
drive is similar) is that there's a pin on the connector (pin 9, I think)
which will trigger the eject mechanism if clamped to ground. It's not
used on the Mac AFAIK. Maybe it was used on the Lisa.
I suspect that the feature is used by the Apple II family. External
3.5" drives for the II have an eject switch.
Phil
**************************************************************
Phil Beesley -- Computer Officer -- Distributed Systems Suppport
University of Leicester
Tel (0)116 252-2231
E-Mail pb14(a)le.ac.uk
16 Sep
16 Sep
7:33 a.m.
On 16 Sep 98 at 0:14, Tony Duell wrote:
One interesting 'feature' of the 800K Mac
drive (and I suspect the 400K
drive is similar) is that there's a pin on the connector (pin 9, I think)
which will trigger the eject mechanism if clamped to ground. It's not
used on the Mac AFAIK. Maybe it was used on the Lisa.
"Phil Beesley" <PB14(a)leicester.ac.uk> wrote:
I suspect that the feature is used by the Apple II
family. External
3.5" drives for the II have an eject switch.
Furthermore, Apple implemented the switch such that it doesn't actually
force the drive to eject the disk. If the computer configures the drive
appropriately, the switch will simply generate a request to software.
For instance, if you install an external Apple 3.5 drive or SuperDrive
(FDHD) on a Macintosh IIcx or IIci, pressing the button on the drive
causes the driver to post an event that is equivalent to hitting
Command-Shift-2 on the keyboard.
The Apple IIgs software might also use the button in this way; I haven't
checked.
11:30 a.m.
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