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Posts" Subject: Macintosh Portable
Does anyone know off hand what polarity that Mac Portable requires? I know that
the original was 7.5V @ 1.5A, but not sure of the polarity.
If that old Conner is still good, you're one of the lucky ones for sure..
We had to build a new disk for ours, and if I recall, you only need to load
the correct version of standard MacOS (6.0.4?) and it will recognize the
portable and install the correct software for it. There may also have been
> On 28 Nov 2016, at 3:31 pm, drlegendre . wrote:
>
> Yep, that's exactly what you needed!
>
> I'll be very interested to hear how it works out. Do you plan to mount
> another conventional disk, or will you try a SCSI2SD type option?
As far as I know, the old Conner SCSI drive should (might) s
> Details are on page 5-31 (Chapter 5: Hardware) of the Macintosh Portable
> Developer Note, Table 5-6: SCSI Internal Connector Pinout. It should be
> simple to make an adapter for a SCSI2SD or equivalent.
>
>
> Thank you, I think I have found the appropriate diagram and can mak
both SCSI signal and power. Details are
> on page 5-31 (Chapter 5: Hardware) of the Macintosh Portable Developer Note,
> Table 5-6: SCSI Internal Connector Pinout. It should be simple to make an
> adapter for a SCSI2SD or equivalent.
Thank you, I think I have found the appropriate d
> On 28 Nov 2016, at 4:49 am, Stephen Pereira wrote:
>
> I am not certain exactly what you mean by polarity in this case, but I’m
> guessing that you are asking which contact is positive and which is negative.
> If that’s the case, the center socket is positive, and the outer jacket band
> is
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&
I think the drive
> > cable carries both data and power.
>
> Not really proprietary, it was before tiny portable SCSI drives were
> really standardized, and Apple published everything so third parties could
> create compatible hardware.
>
> It’s just a 34-pin connector
It’s just a 34-pin connector carrying both SCSI signal and power. Details are
on page 5-31 (Chapter 5: Hardware) of the Macintosh Portable Developer Note,
Table 5-6: SCSI Internal Connector Pinout. It should be simple to make an
adapter for a SCSI2SD or equivalent.
-- Chris
Chris,
I remembered seeing this post from a couple of years ago when I was looking
at a Mac Portable. I ended up not buying it so I can't speak for whether
this will work, but it might point in the right direction. See especially
the links around the 4th post in the thread as it shows a 34 pin con
Chris, is it a 40 pin cable?
Enviado do meu Tele-Movel
Em 26/11/2016 04:26, "Chris Pye" escreveu:
> Does anyone know off hand what polarity that Mac Portable requires? I know
> that the original was 7.5V @ 1.5A, but not sure of the polarity.
>
> I did have have a PB100 power supply that I used
I can't answer your question about PSU polarity, but I do have some
experience with the Mac Portable hard drive. I had to 'make' a replacement
drive for one, almost 20 years ago now.. so forgive me if there are errors
in this!
You're correct about the drive connector, it's one of those maddening
p
Does anyone know off hand what polarity that Mac Portable requires? I know that
the original was 7.5V @ 1.5A, but not sure of the polarity.
I did have have a PB100 power supply that I used with mine, but (unfortunately)
no longer have it.
Also (if it still works) what is the easiest way to imag
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