68kMLA Classic Interface

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Cheap, Quick and Dirty flexable SE/30 PDS extender
Posted by: toledogeek on 2017-06-29 02:59:49
Hello all, long time lurker, first time poster.

Like many of you, Ive been trying out the super-cheap radius pivot color card in my SE/30. Ive ordered a TwinSpark card, but who knows when/if it'll arrive. besides, i'm pretty sure it STILL wont fit. so what to do?

My solution might not be the most "proper" out there, but it'll get the case back on.

IMG_1487.JPG

Here are the Digikey parts you'll need:

1x A32826-ND
 
1x A1289-ND
 
3x 1528-1379-ND
 
Assembly is simple, and tedious. you'll need to push each plug with a pick to ensure tight contact.... Do this properly 240 times and you're all set. tape it up to keep it tight. no soldering involved.
IMG_1489.JPGIMG_1488.JPG
 
It's probably not the most durable extender, but allows you to bend and twist those cards in any way you can make them fit. It would probably be a good idea to back your cards with Plexi or something. IMG_1486.JPG
 
IMG_1490.JPG
 
Some of you might be worried about interference and the like. Ive not had any issues in the few days I've run it, were only dealing with a 16MHz bus to begin with, it'll survive the 8 inch trip. I've worked in industrial electronics for years, and have seen busses like this wide open in racks on 6 foot cables.
Posted by: Trash80toHP_Mini on 2017-06-29 06:50:11
Sweet! Looks plenty proper enough to me. PCI slot extender/adapter cables for 1U RackBoxen run at crazy clock rates as compared to the SE/30.

We tested our ISA card with Centronics 50 interface (SCSI IDC connectors/ribbon cable) to our Font Emulator Contraption on a 50' TelCo cable to make sure the cable drivers could handle the load. I'd almost bet you could use the M-F version of those breadboard cables to get 16" of length and position the card anywhere you wanted in the bucket.

Welcome aboard!
Posted by: joethezombie on 2017-06-29 06:56:09
very nice!  I love PDS hacks.  I also finally broke down and bought a twin spark after looking for a daystar adapter for 3 years. It arrived in 10 days.
Posted by: Bunsen on 2017-06-30 00:08:06
Excellent 🙂 Thanks for posting it, especially with the parts numbers.
Posted by: Bolle on 2017-07-11 14:06:15
Did you have to do anything else for the card to work?

I ordered one of those cards IIsi pivot cards as well and when I plug it in and turn the Mac on it chimes but then just sits at a grey screen without the cursor appearing.

I guess the jumpers on the card are for selecting the slot ID. Did you have to change those?

I plugged the card directly into the logicboard.
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