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From: richm@pro-berks.cts.com (Rich Mlodoch)
Newsgroups: comp.sys.apple2
Subject: disk ][ on smartport
Message-ID: <7652@crash.cts.com>
Date: 19 Feb 91 21:36:08 GMT
Sender: root@crash.cts.com
Lines: 28

I receive some mail from folks who wanted to know how to hook up two disk ][
drives to a smartport. Here's how I did it. Building the cable is pretty easy.
I used a small Radio Shack poject board. I mounted two 20 pin headers on th
project board (this is where you will plug in your disk ][ drives), they are
about 1.5 in. apart. They must be mounted so that you can solder wires to the
foil pads. I mounted mine on the foil pad side. I then bent the pins back up
through to the foil pad side from the non foil pad side that they stuck down
through to and I soldered them in place. The end result is that you have two
headers mounted so that you have two or three pads for each pin to make
connections to. I up to you how you do it. Jumper wires should now be used to
interconnect pins 1 to 20 on header 1 to 1 to 20 to header 2 , EXCEPT FOR PIN
14. DO NOT INTERCONNECT THE TWO PIN 14s. Using a 5 or 6 in piece of 20
conductor ribbon wire make te following connections between your board and a
DB19 male connector. I will give the pins in the following order: DB19 - Your
board ::: 1 - 1, 2 - 3, 3 - 5, 5 - 9, 6 - 11, 7 - 13, 8 - 15, 9 - 14 of header
#1, 10 - 20, 11 - 2, 12 - 4, 13 - 6, 14 - 8, 15 -10, 17 - 14 of header #2, 18
- 16, 19 - 18. Note that pin 14 is the only pin that is not interconnected.
This is the drive enable signal. It needs to come from two different places to
enable two different drives. BE CAREFUL making your cable. CHECK all
connections. I highly recommend this cable be made by someone with some

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