[comp.sys.mac.hardware] IIsi and Banana Nubus Ethernet cards!!!

pascal@CAM.ORG (Pascal Gosselin) (11/03/90)

As some of you may remember, I swapped-out the puny 40meg 1/3 height HD of
a IIsi for a larger 105meg Quantum 1/2 height mechanism.  No apparent
problems, it continues to work fine.

Today, I finally got my hands on the rarest thing on earth (or so Mac the
Knife from Mac Leak claims), the IIsi NuBus adaptor board.  The fit of
the adaptor isn't that great, you practically break the HD power connector
(on the motherboard) when trying to install it.

Now, this installation was complicated by the fact that the Emac Speedlink II
Ethernet board I was installing is as big as they get.  If you have ever
seen an open IIsi, the board is put in sideways (like an IBM model 30)
and extends towards the front, OVER the hard disk.

Now, there's PLENTY of room when the factory Conner drive is installed, but
the Quantum's height causes one of the components on the Ethernet board
to touch the Quantum's metal top (no shorts though).  There you have it,
a curved NuBus board that seems to work!

I am not totally convinced as to the safety of the whole procedure.  I
transfered about 20 megs of software from this IIsi to my Ethernet-equipped
SE/30 (with Timbuktu 3.1).  Some of the transfered software bombed for
no apparent reason.  I re-transfered some of the apps, and this seems to
have solved the problem for the most part.

Could the Quantum's voice coil be causing random garbage to be sent
in an undetected fashion to my Mac ????


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