19 Jan
2014
19 Jan
'14
9:25 p.m.
Does anybody have a spare external drive for a Tandy 1000EX XT clone? If
not, is there a way to make a 'generic' 5-1/4" drive work with it? IIRC the
1000EX connector is a basic card-edge deal, probably 34pin.
When I found the machine, the ext. drive wasn't sitting that far away from
it, but not realizing they were a pair, I just walked away from it. Been
bugging me for years, what a PITA with one drive, lol.
Gotta gotta get it working. Thanks for any & all assistance!
20 Jan
20 Jan
1:14 a.m.
Does anybody have a spare external drive for a Tandy
1000EX
XT clone? If
not, is there a way to make a 'generic' 5-1/4" drive work
with it? IIRC the
1000EX connector is a basic card-edge deal, probably 34pin.
Gotta gotta get it working. Thanks for any & all assistance!
They are not quite generic drives, but if you put a 5.25" DS/DD type
drive in an external enclosure and used a cable you can make it work.
Note that the connector on the EX is 30 PIN. The 34 PIN port is the
parallel interface.
Coming from the EX you will have to disconnect the following pins:
2, 4, 6, 8 (+5v) and 1, 3, 28, 30 (+12v) You can wire this to actually
power the drive. Get an old 4 pin Molex connector from an old power
supply.
Connect 2,4,6,8 up to red
Connect 1,3,28,30 to yellow
Connect 5,7,9 to the blacks
5,7,9,11,13,18,22,24,26 on the EX are all ground and should go to 1, 3,
5, 7, 9, 11, 13, 15, 17, 19, 21, 23,25, 27, 29, 31, 33
Now, here should be the rest:
Then you have to do a little "cross over" somehow. I've done it with
perf board and by twisting, soldering and insulating the connections.
EX External drive
10 8 Index*
29 10,12,14 or 6 Drive Select (depends on which you want
0, 1, 2 or 3)* Internal is hardwired to ds0 (10)
16 16 Motor On*
17 18 Direction*
14 20 Step*
23 22 Write Data*
25 24 Write Enable*
12 26 Track 0*
19 28 Write Protect*
21 30 Read Data*
15 32 Side Select*
For more information, see:
http://support.radioshack.com/support_computer/doc1/1064.htm
The Tandy external drives were powered over the floppy cable for the
ex/hx and several others.
Kelly
5:45 a.m.
I'm sorry, that's way too much info. Could you maybe summarize it in five
lines or so? ;-)
Kidding of course, thanks much for that. It's a bit to digest, and I'm
still going to hold out for the correct unit for a while (mostly because I
don't think I have any appropriate drive mechanisms to use anyway,
anymore).
But your post will definitely be saved in with my vintage docs. Thanks for
taking the time to post that!
Best, Bill
On Sun, Jan 19, 2014 at 7:14 PM, Kelly D. Leavitt <kelly at catcorner.org>wrote:
Does anybody
have a spare external drive for a Tandy 1000EX
XT clone? If
not, is there a way to make a 'generic' 5-1/4" drive work
with it? IIRC the
1000EX connector is a basic card-edge deal, probably 34pin.
Gotta gotta get it working. Thanks for any & all assistance!
They are not quite generic drives, but if you put a 5.25" DS/DD type
drive in an external enclosure and used a cable you can make it work.
Note that the connector on the EX is 30 PIN. The 34 PIN port is the
parallel interface.
Coming from the EX you will have to disconnect the following pins:
2, 4, 6, 8 (+5v) and 1, 3, 28, 30 (+12v) You can wire this to actually
power the drive. Get an old 4 pin Molex connector from an old power
supply.
Connect 2,4,6,8 up to red
Connect 1,3,28,30 to yellow
Connect 5,7,9 to the blacks
5,7,9,11,13,18,22,24,26 on the EX are all ground and should go to 1, 3,
5, 7, 9, 11, 13, 15, 17, 19, 21, 23,25, 27, 29, 31, 33
Now, here should be the rest:
Then you have to do a little "cross over" somehow. I've done it with
perf board and by twisting, soldering and insulating the connections.
EX External drive
10 8 Index*
29 10,12,14 or 6 Drive Select (depends on which you want
0, 1, 2 or 3)* Internal is hardwired to ds0 (10)
16 16 Motor On*
17 18 Direction*
14 20 Step*
23 22 Write Data*
25 24 Write Enable*
12 26 Track 0*
19 28 Write Protect*
21 30 Read Data*
15 32 Side Select*
For more information, see:
http://support.radioshack.com/support_computer/doc1/1064.htm
The Tandy external drives were powered over the floppy cable for the
ex/hx and several others.
Kelly
3996
days inactive
3997
days old
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