CompuServe Thread

Ok as promised, here is the hack to add another slot to your A3000 for the bridgeboards. From frith.egr.msu.edu!wille Thu Sep 12 12:00:24 1991 Return-Path: <wille@frith.egr.msu.edu> Received: by ais.org (/\=-/\ Smail3.1.18.1 #18.20) id <m0kKtSm-00000HC@ais.org>; Thu, 12 Sep 91 12:00 EDT Received: by frith.egr.msu.edu (5.61/1.34) id AA19049; Thu, 12 Sep 91 11:59:51 -0400 Date: Thu, 12 Sep 91 11:59:51 -0400 From: wille@frith.egr.msu.edu (Jeffrey Wille) Message-Id: <9109121559.AA19049@frith.egr.msu.edu> To: cython@ais.org Subject: Re: C= kudos and concern, power supply & service Cc: wille@frith.egr.msu.edu Status: OR It's really easy and it shouldn't void your warranty since you don't have to make any changes to the computer itself. Basically what you do is make a Y ribbon cable and plug it into the lowest IBM slot, which is the next-to-the-lowest slot. The _lowest_ slot is an Amiga slot and that's where you put your 3rd IBM board, which plugs into your Y cable. If you make it compact, it doesn't take up too much room and you can still put the cover back on your A3000 with your boards plugged into it (unless you have a very tall board.) What I did was get an old parallel interface board and hack off the part with the card-edge terminals on it with a hack saw. (If you want to make an AT slot, get an AT style board. But then you knew that, right? Make sure you get one that has nice solder pads on it. It will make your life easier.) Then I got two card-edge connectors from a dead AT motherboard. (I'm sure you could buy these parts new if you wanted to.) I then connected each terminal of the card edge to the corresponding contacts on the cardedge connectors with ribbon cable. In other words, you hook everything up in parallel. That's it. To make it very compact, I bent the leads of one of the edge connectors inward and soldered them directly onto the card edge and only ran the ribbon cable to the second connector. That's all I did and it works great. I posted an article about it and got some suggestions from Dave Haynie (the guy who designed the A3000's