Pinout

Pinout

Floppy Drive male pins

||||||||||||||||||||||||||||||||||||||||||||||||||||||
||02|04|06|08|10|12|14|16|18|20|22|24|26|28|30|32|34||
||01|##|05|07|09|11|13|15|17|19|21|23|25|27|29|31|33||
||||||||||||||||||||||||||--||||||||||||||||||||||||||

(this is the view from the back of the Floppy Drive) (the cable is reversed horizontally)

Normal FDD cable with reversed center

01 -> 01
02 -> 02
03 -> (blocked in FD)
04 -> 04
05 -> (blocked in cable)
06 -> 06
07 -> 07
08 -> 08
09 -> 09
10 -> 16 *
11 -> 15 * FDD ON
12 -> 14 * FDD ON
13 -> 13
14 -> 12 *
15 -> 11 *
16 -> 10 *
17 -> 17 GND
18 -> 18 DIRECTION
19 -> 19 GND
20 -> 20 STEP
21 -> 21
22 -> 22
23 -> 23
24 -> 24
25 -> 25
26 -> 26
27 -> 27
28 -> 28
29 -> 29
30 -> 30
31 -> 31
32 -> 32
33 -> 33
34 -> 34

Cable connector female pins

||||||||||||||||||||||||||||||||||||||||||||||||||||||
||34|32|30|28|26|24|22|20|18|16|14|12|10|08|06|04|02||
||33|31|29|27|25|23|21|19|17|15|13|11|09|07|##|03|01||
||||||||||||||||||||||||||--||||||||||||||||||||||||||

(this is the view for the cable that would go into the motherboard)

short circuit pins
14 = FDD ON

data pins
18 = DIRECTION
20 = STEP

ground pins
17 = GND
19 = GND

female cable

||··|··|··|··|··|··|··|DP|SP|··|ON|··|··|··|··|··|··||
||··|··|··|··|··|··|··|GP|GP|··|ON|··|··|··|##|··|··||

multiplexer board top view

|||||||||||||||||||||||||||||||||||||||||||||||||||||| (beginning of board)
||··|··|··|··|··|··|ON|·1|DP|SP|22|2·|··|··|··|··|··||
||··|··|##|··|··|··|ON|·1|GP|GP|33|23|33|··|··|··|··||
||··|··|··|··|··|··|oo|·1|oo|oo|··|2·|·3|··|··|··|··|| (space between connectors)
||··|··|··|··|··|··|ON|·1|DP|SP|22|2·|·3|··|··|··|··||
||··|··|##|··|··|··|ON|·1|GP|GP|33|23|33|··|··|··|··||
||··|··|··|··|··|··|oo|·1|oo|oo|··|2·|·3|··|··|··|··|| (space between connectors)