9 Feb
2011
9 Feb
'11
8:01 p.m.
That's cool Kurt,
It's a pity I don't own a Profile drive. Then I could give my Lisa 2 a
"hat' like yours.
I've bitten the bullet and bought an X/Profile emulator to replace my Widget
drive. As I have one floppy drive that works well that will give me ONE
working Lisa 2/10 which can run the Lisa Office suite. Although it won't
SOUND like a genuine Lisa 2/10 did in the day, it's close enough for me (and
really the only practical way forward).
This means the broken floppy drive is the only remaining issue. If I can
get at least ONE of my two faulty drives going I'll have two working Lisas,
the Lisa 2/10 and the Lisa 2. Then I'll probably need to sell the latter to
pay for what I spent on the X/Profile emulator for the former (-:
Terry
----- Original Message -----
From: "Curt @ Atari Museum" <curt at atarimuseum.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Thursday, February 10, 2011 4:45 PM
Subject: Re: Apple Lisa 2/10 - Progress
Its been great watching the progress of this topic...
I pulled out an old
photo of my room from I think 1989 when I owned a Lisa (aka Mac XL)
http://www.atarimuseum.com/misc/curt-room-nov_1989.jpg
Curt
terry stewart wrote:
I think I know what you mean now. That TA 7259
is the chip underneath
the large brown clip/cover at the front of the drive. I'm not sure how
to remove the latter though? I seems solidly glued in covering the pins
of the chip. If I could remove this, I could measure the signals on
these pins when I tap the switch (thereby fooling the drive into thinking
a disk is present).
Or do you need to remove the motor, switches, plugs and then slide the
motor PCB out towards the rear until it's clear of that clip/cover.
Thinking about it, that's probably what's needed. In that case, it won't
be so easy to test as everything will be in bits.
Terry
Now, there seem to be 3 ICs on the motor PCB,
same as the standard one.
tHe 2 SIL packages (black plastic strips with 9 pins in a row along the
bottom edge) are a dual op-amp and the speed control PLL. The modifed
DIL
package at the front labelled TA7259 is the motor controlelr I've been
mentioning. I hve checked, you can get a data sheet on that from
http://www.datasheetarchive.com//