IBM 9331-011 8" External Floppy Drive - eBay 183038271095

[Josh Dersch]

On 2/1/2018 2:52 PM, Ali wrote:

>> This is true.  I have the pinouts at home if anyone wants them, I can
>> post them when I get home from work.
> Josh,
>
> That would be great. Thanks.
>
> -Ali
>
>
> .
>

Here's what I have, from notes I took about 10 years ago when I built a 
cable after beeping things out.  The YE-DATA drive itself uses the 
standard Shugart interface, IIRC. The below table lists the 50-pin edge 
connector pins of interest, the 37-pin d-sub on the back of the drive 
unit, and the 34-pin PC floppy cable.  I make no guarantees, but it 
worked for me:

50-pin edge       37-pin Dsub        34-pin edge
-----------       -----------        -----------
1                 20                    GND
2                 2                           (TG43)
9                 25                    GND
10                7                     N/C
11                37                    GND
12                19                    34    (Ready)
13                36                    GND
14                18                    32    (Side1)
17                28                    GND
18                10                    16    (Motor ON/Load)
19                24                    GND
20                6                     8    (Index)
21                27                    GND
22                9                     N/C
25                26                    GND
26                8                     12    (DS1->DS0)
33                29                    GND
34                11                    18    (Direction)
35                30                    GND
36                12                    20    (Step)
37                31                    GND
38                13                    22    (Write Data)
39                32                    GND
40                14                    24    (Write Gate)
41                33                    GND
42                15                    26    (Track 0)
43                34                    GND
44                16                    28    (Write Protect)
45                35                    GND
46                17                    30    (Read Data)