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From: INFO-ATARI16-REQUEST@WSMR-SIMTEL20.ARMY.MIL
Newsgroups: comp.sys.atari.st
Subject: (none)
Message-ID: <9002060807.AA19503@ucbvax.Berkeley.EDU>
Date: 6 Feb 90 08:07:47 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 56

To: info-atari16
 
Subject: external drive
 

I am attempting to connect a home-brew external disk drive to my 1040
with little success.

Parts used. Case with power supply.
Floppy cable bought from Best Electronics.
NEC FD1037A 3.5 floppy drive.

I am 99% certain I have the wires properly connected as listed below

1040 Drive
1 -- 30
2 -- 32
3 -- 3
4 -- 8
5 -- 10
6 not connected
7 -- 7
8 -- 16
9 - 18
10 -- 20
11 -- 22
12 -- 24
13 -- 26
14 -- 28

I stepped the ribbon cable to a db37 to make it look custom and
verified the wire placement with an ohm meter to make sure every-
thing matched.

The NEC has a four position dip next to its' 34 pin out and I have tried
it in all four positions and found no improvement.

When I power up with the external connected and turned on, only the
A drive responds and it does not recognize any data on the disk
( a window opens as A with 0 files. This disk has files on it).
If try to open drive B it asks for a disk for drive A as drive B. It
stills refuses to recognize any data. If I disconnect the external drive,
A responds properly.

I am missing something? I do not know if I need some more parts in the
loop or if I just have something wired improperly.

HELP!!!

Please respond to me directly, I don't get the digest. Thanks!

Norm Frech ( frech@MWRAAA.ARMY.MIL )

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"Verbatum regurgitation is against my principles". Neal - The Young Ones
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