will this work (cable for 3.5 harddrive in a1200)

will this work (cable for 3.5 harddrive in a1200)

Post by Ron Mal » Fri, 09 Dec 1994 12:24:26



I believe the following will work but I would like some confirmation
first:  the cable to connect an external 3.5" harddrive to my a1200
would consist of a 44 pin connector attached to the ide header
of the a1200, with a 40 wire ribbon cable ending with a 40 pin
connector attached to the harddrive.  The 40 wire ribbon cable would
connect to pins 1-40 on the 44 pin connector, leaving pins 41-44
unconnected.  The harddrive will be powered externally.  This
makes sense to me but I want to make sure I'm not overlooking
anything.

Any comments would be appreciated.


 
 
 

will this work (cable for 3.5 harddrive in a1200)

Post by Glenn M. Saunde » Fri, 09 Dec 1994 16:45:41


: I believe the following will work but I would like some confirmation
: first:  the cable to connect an external 3.5" harddrive to my a1200
: would consist of a 44 pin connector attached to the ide header
: of the a1200, with a 40 wire ribbon cable ending with a 40 pin
: connector attached to the harddrive.  The 40 wire ribbon cable would
: connect to pins 1-40 on the 44 pin connector, leaving pins 41-44
: unconnected.  The harddrive will be powered externally.  This
: makes sense to me but I want to make sure I'm not overlooking
: anything.

You got it.  The problem is that there is a change in wire thickness.

Getting the thinner ribbon cable to work with was impossible for me.

I could only find the standard thickness, which is way too thick to stuff
into the small 44 pin IDE crimpon connector.

If you CAN find the right cable, then hand-split the end and stuff it one
wire at a time into the 40 pin connector.

This is what Redmond Cable did.  It's not pretty, but I guess it works
when it is done right.

If you don't have a SCSI+ (I did so it didn't help me), the better way is
to get a small converter circuitboard that handles the change in spacing
on the board itself.  This will let you use the wider spaced ribbon cable
throughout and is more stable.  I've seen a couple people post that they
could get this little board for about $10.  ICD no longer has it, and will
try to send you a kit at around $20 that has it inside, but you don't want
to waste your money.

This little thing is used by clones usually, to be able to hook up 2.5"
drives to 3.5" headers.  So A1200 users would be using it backwards, but
it works.

By far the _#1_ problem with new A1200 users is the struggle to hook up
external 3.5" drives, and unless you can spare $70+ for an XDS case (which
is, no matter how you cut it, excessive for what you get), it is going to
be a struggle unless you know what you are doing beforehand and the parts
are available locally.

It's too bad that some people (who will remain nameless) would rather
flame us than express support, for this is by far the most common
problem-hardware thread on this newsgroup.

 
 
 

will this work (cable for 3.5 harddrive in a1200)

Post by Damian Maxwe » Sun, 11 Dec 1994 11:14:24


: I believe the following will work but I would like some confirmation
: first:  the cable to connect an external 3.5" harddrive to my a1200
: would consist of a 44 pin connector attached to the ide header

If you can get the connector....this will require some snooping

: of the a1200, with a 40 wire ribbon cable ending with a 40 pin
: connector attached to the harddrive.  The 40 wire ribbon cable would
: connect to pins 1-40 on the 44 pin connector, leaving pins 41-44

correct....moev the the head of the class 8-)

: unconnected.  The harddrive will be powered externally.  This
: makes sense to me but I want to make sure I'm not overlooking
: anything.

Yepp this sounds fine, it is basically what i'm doing.
I was able to get an adaptor designed for using a 2.5" DRIVE in a 3.5"
MACHINE and was able to use that backwards. (after a little cutting to
make the adaptor fit..)

I stole power from the floppy power cable and use an XT power supply
on the whole machine...ths is prolly a better way to go than using a second
power supply.

: Any comments would be appreciated.


no probs...
--
,...............................,.......................................,
: Damian Maxwell (Penfold)      :   RECURSION :-                        :


:   La Trobe University,        : Amiga 1200/340/6/Mitsubishi Multisync :
:   Melbourne, Australia.       :   AmiTCP 4.0 demo, Telser v1.00b2.    :
;...............................;.......................................;

 
 
 

will this work (cable for 3.5 harddrive in a1200)

Post by Jeff » Sun, 11 Dec 1994 19:12:40



>I believe the following will work but I would like some confirmation
>first:  the cable to connect an external 3.5" harddrive to my a1200
>would consist of a 44 pin connector attached to the ide header
>of the a1200, with a 40 wire ribbon cable ending with a 40 pin
>connector attached to the harddrive.  The 40 wire ribbon cable would
>connect to pins 1-40 on the 44 pin connector, leaving pins 41-44
>unconnected.  The harddrive will be powered externally.  This
>makes sense to me but I want to make sure I'm not overlooking
>anything.

>Any comments would be appreciated.



Worked for me ...
 
 
 

will this work (cable for 3.5 harddrive in a1200)

Post by DAVID BALAZ » Tue, 13 Dec 1994 20:44:31



> I believe the following will work but I would like some confirmation
> first:  the cable to connect an external 3.5" harddrive to my a1200
> would consist of a 44 pin connector attached to the ide header
> of the a1200, with a 40 wire ribbon cable ending with a 40 pin
> connector attached to the harddrive.  The 40 wire ribbon cable would
> connect to pins 1-40 on the 44 pin connector, leaving pins 41-44
> unconnected.  The harddrive will be powered externally.  This
> makes sense to me but I want to make sure I'm not overlooking
> anything.

> Any comments would be appreciated.



This is the way I did it and it works.

( actually I didn't use a 2.5" 44-pin connector but I soldered together ...)

--

-----------------------------------------------------------------------

Amiga 1200                                                  .
Quantum LPS340A                           Slovenija, moja dezela.
-----------------------------------------------------------------------

 
 
 

1. will this work (cable for 3.5 harddrive in a1200)

In a message of 12 Dec 94 DAVID BALAZIC wrote to All:


 DB> confirmationfirst:  the cable to connect an external 3.5" harddrive to
 DB> my a1200would consist of a 44 pin connector attached to the ide header
 DB> of the a1200, with a 40 wire ribbon cable ending with a 40 pin
 DB> connector attached to the harddrive.  The 40 wire ribbon cable would
 DB> connect to pins 1-40 on the 44 pin connector, leaving pins 41-44
 DB> unconnected.  The harddrive will be powered externally.  Thismakes
 DB> sense to me but I want to make sure I'm not overlookinganything.

   Here in Holland for a small amount of cash(39 guldens) You can bij
   the 2.5"-3.5"connector.This comes complete with 44 pin connector and
   40 pin connector plus ribbon cable and a power supply cable.The power supply
   cable replaces the disk drive power cable in youe 1200 and connects
   the 3.5HD and disk drive to the same power supply.Although if you use an
   older 3.5" HD(larger models)then you need a stronger power supply for your
   computer.Otherwise the power supply is good enough..


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