From: jkonecn@andy.bgsu.edu (Joe Konecny)
Subject: How to add a harddrive to the 1000 EX or HX
Organization: Bowling Green State University B.G., Oh.
Date: Mon, 11 Jan 1993 03:14:38 GMT

 > scs5759@ritvax: 1000 EX
> My father wants a hard drive to accompany his 1000 EX (I've tries to convince
> him to go for something a little more updated).  He says it has sentimental
> value.  
> Any way, he has an external port for a 5.25" drive.  I was wondering if it's
> possible to swap that one for an external hard drive??  If so how much are we
> looking at, and where can I get such a beast?  If that isn't a possibility,
> then how about an internal?
> Help.
> Scott     
          I have never heard of adding a hard drive to the external floppy port but I do know that most any hard drive can be added.  You will need a few parts and an external case for the drive.  The controller must be an 8 bit.  I will   post the method that you must use but first I will give you my experience.  I   built the adapter and have used it in my EX.  I don't have a working hard drive to try but I did install a regular 8 bit CGA card and it worked fine.  All this consist of is an adpater that i

s wired straight through.  That funky expansion  connector is the same, pin for pin, as a regular XT computer.  You must have the memory expansion board in order to do this (At least that's what I havge been  told).

> The following was posted on the Tandy 1000 Echomail Conference:
> 
> 
> Msg#:40109 *TANDY 1000*
> 02/06/89 19:27:55
> From: JAY WIGGINTON
>   To: DAVE HEATH
> Subj: EX HARD DRIVE ADAPTER
>  This is what you have to do to make an adapter to plug in a standard
>  edge card in an EX or HX:
>   
>  Parts as follows:
>  1)Radio Shack Plus Expansion Adaptor, Part # 25-1016 - - $14.95
>  2)Female headedr connector Part # 8519257
>  3)31/62 pin edge connector Part # 8519236
>  Parts #2 & #3 you can get from National Parts (Radio Shack Service Center). 
> is from a memory plus expansion board and #3 is from an SX
>   
>  Procedure:
>  1)Remove the pins from #1, being careful not to damage the board.
>  2)Cut the board down to just about the location of the header connector   th
> was removed.
>  3)Cut the edge finger leaving about 1/8 inch of the gold fingers exposed  
> below the solder mask (the green covering on the board). This cut is   option
> -More-
> but you may need the room.
>  4)Solder the edge connector #3 to the holes that the header connector was  
> removed from. It will be necessary to bend the pins so that they fit.
>    Be careful not to short any together.
>  WARNING! The edge connector MUST be on the side of the board with the 
> printing, Otherwise you will destroy the controller board when you first powe
> up.
>  5)Finally solder the female connector #2 to the edge fingers you left  
> exposed.
>  6)Check all pins for shorts to other pins. Use a continuity checker. This   
> very important it will not function if any pins are shorted   together.
>   
>  Finally you will need to enable IRQ5 signal to the expansion port. You do th
> by installing a jumper wire form pin B23 of the expansion port (J12) to pin 2
> of the 8259A interupt controller chip (U9).
>   
>  The jumper is optional if you are able to change the controller card to 
>  IRQ2 via jumpers on the card. 
>   
>  hope this helps Dave....I now have this adapter in my EX and am running a 30
> MEG external Hard Drive. Good Luck!  Jay
> 
> 
>  * Origin: The WARPed Drive * 813-945-1957 * Cape Coral FL (Opus 1:371/7)

  I actually used a non-working 1200 bps modem for the connector to the 1000 EX memory expansion board.  Like they say, Good Luck!   Joe
Joe Konecny
jkonecn@andy.bgsu.edu