Diskette Drive 34-Pin (Berg) Connector


Diskette 34-Pin (Berg) Connector.

  34-pin, berg strip.

Standard PS/2 and PC-300, Aptiva 2139/53/59 
1.44 MB Diskette Drive 

Pin Signal Name I/O Pin Signal Name I/O
1 Ground   18 -Direction in O
2 -Density Sel. O 19 Ground  
3 Not used   20 -Step O
4 Not used   21 Ground  
5 Ground   22 -Write Data I
6 Not used   23 Ground  
7 Ground   24 -Write Enable O
8 -Index I 25 Ground  
9 Ground   26 -Track 0 I
10 -Motor Enable 0 O 27 Ground  
11 Ground   28 -Write Protect I
12 -Drive Sel. 1 O 29 Ground  
13 Ground   30 -Read Data I
14 -Drive Sel. 0 O 31 Ground  
15 Ground   32 -Sel. Head 1 O
16 -Motor Enable 1 O 33 Ground  
17 Ground   34 -Diskette Change I


PC 700 Series - 1.44/2.88 MB Diskette Drive 

Pin Signal Name Pin Signal Name
1 Ground 18 -Direction in
2 High Density Select 19 Ground
3 -Security 20 -Step
4 Drive type ID
Drive status +
21 Ground
5 Ground or key 22 -Write Data
6 -Data rate select 0 23 Ground
7 Ground 24 -Write Enable
8 -Index 25 Ground
9 Not connected 26 -Track 0
10 -Motor Enable 0 27 Media type ID 0
Drive status 2 +
11 Ground 28 -Write Protect
12 -Drive Sel. 1 29 Ground
13 Ground 30 -Read Data
14 -Drive Sel. 0 31 Ground
15 Ground 32 -Sel. Head 1
16 -Motor Enable 1 33 Data rate sel. 1 +
17 Media type ID 1
Drive status 3 +
34 -Diskette Change


+ The drive status  and security command  signals are used on an optional diskette drive that provides removable media security RMS If both a 2.88 MB and a 1.44 MB diskette drive are installed, the security functions of the 2.88 MB drive are disabled.

NOTE: The media type ID  signals are used for 2.88 MB diskette drives only. If both a 2.88 MB and a 1.44 MB diskette drive are installed, the media type ID  signals are disabled.


Aptiva 2165 SL-A - 1.44 MB Diskette Drive 
PS/2 - 1.44/2.88 MB Diskette Drive 

Pin Signal Name Pin Signal Name
1 Ground 18 -Direction in
2 Data rate select 1 19 Ground
3 +5 Vdc 20 -Step
4 Drive type ID 1
Drive status 1
21 Ground
5 Ground 22 -Write Data
6 +12 Vdc 23 Ground
7 Ground 24 -Write Enable
8 -Index 25 Ground
9 Drive type ID 0
Drive status 0
26 -Track 0
10 Reserved 27 Media type ID 0
Drive status 2
11 Ground 28 -Write Protect
12 -Drive Select 29 Ground
13 Ground 30 -Read Data
14 -Security Cmd. 31 Ground
15 Ground 32 -Sel. Head 1
16 -Motor Enable 33 Data rate sel. 0
17 Media type ID 1
Drive status 3
34 -Diskette Change


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