On 1999-01-29 [EMAIL PROTECTED] said:
>Sorry abou this Travis, you're wrong here. Only a few like the 50,
>50Z and 70 use a backplane card controller. The models 25 through
>40 series are ISA and some have built-in proprietary controlers or
>you can use a stock controller and drive - 8 or 16 bit dependant
>upon the actual unit. Some have mylar ribbons for IBM drives, some
>have ribbon cabling. Many of the models use SCSI drives (stock type
>too) and either have a controller built in or use an adapter card..
>They generally all use a ribbon cable as well.
>Every model/type in the PS/2 line is different in some way from the
>other. I work them daily and by the dozens so I can make this
>statement. I also have a full IBM hardware maintenance manual that
>shows all but the P70 and L40SX but I have those as well in other
>books.
>I missed the roiginal message this was about. If anyone is looking
>for PS/2's or parts just email me direct, I have all sorts of stuff
>- but NO sound cards.
>Travis Siegel wrote:
>> Fyi, just so folks know. In the ps/2 machines, there are no
>>ribbon cables at all. The drives plug directly into a backplane
>>that is plugged directly into the motherboard. So unless you
>>recognize moddle numbers, or know spacifically what kind of drive
>>a particular model of ps/2 machine has, you can't tell just by
>>looking at the drive. But like I said, most of them are IBM
>>brand esdi drives with a circuit board that goes directly into
>>the backplane, no cables required. Makes those drives unusable in
>any other system whether it's esdi or not. >
Hi
The IBM I have has a 3 ISA slot riser card that plugs in to the middle of
the mother board, and the 3.5 flopy and hard drive both have ribbons going
to the mother board.
I have a 40 mb plus development plus hard card 40. This a 40 mb hard
drive built on a ISA card. I was able to plug it into a few diferent
computers and it worked.
I also was able to get a 40 mb C gate drive to work in an IBM 286, but I
would like to use the on board controller if at all posible.
When you have 3 ISA slots in a computer it seems you always are running
out of slots to conect devices to.
Another thing that's a problem whith the IBM's is finding memory for them.
The one I am trying to do the hard drive for has two 30 pin sim slots in it,
and the other ones have foure 30 pin sim slots in them. Also the foure sim
sloted beasts, the sims are straight up pirpendicular to the mother board.
The two sim sloted 286 the two sims are at a lower than 45 digree angle to
the mother board.
Pete
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