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5160 external drives question

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    5160 external drives question

    My 5160 IBM uses an 8-inch IBM floppy controller (ISA card) with an external port. I understand that IBM made this configuration to allow for two more drives without putting additional strain on the XT power supply.

    I don't want to modify the case or the configuration of drives internally (1 full-height 360 Tandon, one full-height 20 Mb Everex HD) but I would like to be able to attach a 3.5 inch floppy through the external port. I'm sure someone has done this before; can anyone give me some pointers?

    P.S. the IBM controller is also connected to a Central Point Deluxe Option Board.
    P.P.S. Upgraded the system ROM to v3 already.

    Thanks for your suggestions.

    -CH-

    #2
    An 8-inch IBM floppy controller for a 5160? I wasn't aware that IBM made them. Do you have a part number?

    Yes, you can use the external port crimping a straight-through or twisted standard floppy ribbon cable to a DC37M connector. Align the ribbon cable so that the "pin 34" side of the cable is on pin 37 of the crimp connector. You'll have to supply external power, unless this is a third-party controller and not IBM. Some of the former allowed for power on the DC 37.
    Reach me: vcfblackhole _at_ protonmail dot com.

    Comment


      #3
      Originally posted by Chuck(G) View Post
      An 8-inch IBM floppy controller for a 5160? ...
      Maybe the OP is referring to the length of the card, not the size oh the drive attached?

      Comment


        #4
        Originally posted by ibmapc View Post
        Maybe the OP is referring to the length of the card, not the size oh the drive attached?
        Somewhat like measuring the size of your dinner plate to describe what you had for supper?
        Reach me: vcfblackhole _at_ protonmail dot com.

        Comment


          #5
          Originally posted by Chuck(G) View Post
          An 8-inch IBM floppy controller for a 5160? I wasn't aware that IBM made them. Do you have a part number?
          Thank you for your replies, and pardon me for the confusion. I couldn't see the part number and didn't want to pull the card from the chassis just to verify. I do not have any 8-inch drives; have never seen one or an 8-inch floppy disk, for that matter.

          I might have made things clearer by adding "8-inch long" controller card. I have two of them; I believe both are IBM. I am attaching a picture of the second controller card, which is stamped 1503968 XM and elsewhere 635. There is nothing else on the front of the board to identify it. It does have a 37-pin female connector, and the FDC chip is an NEC D765AC. On the back of the board is an image of a palm tree inside a square outline, and "94V/0" next to it.. "30-83" is printed in black ink below.

          Thanks again,

          -CH-

          Edit:
          FDC Card.jpg

          And by the way, MinusZeroDegrees covers the topic very thoroughly. My bad for posting needlessly.
          Thanks anyway...
          Last edited by clh333; March 2, 2017, 02:22 PM.

          Comment


            #6
            Looks like a standard IBM PC/XT floppy controller.

            BTW, that attachment link doesn't work.
            PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

            Comment


              #7
              Are you talking about his photo? It showed up just fine over here... {puzzled look}

              Comment


                #8
                Originally posted by Casey View Post
                Are you talking about his photo? It showed up just fine over here... {puzzled look}
                I had to re-attach the picture because my original login timed out while I was composing my posting. Sometimes it takes me a little time to translate from my initial impulse to a polite response.

                -CH-

                Comment


                  #9
                  Looks like a 3/4" floppy drive controllelr from here. Going to be hard to find 3/4" disks.
                  Be polite and I may let you live.

                  https://www.youtube.com/playlist?lis...5NBVfKX5471R9U

                  Comment


                    #10
                    Originally posted by Casey View Post
                    Are you talking about his photo? It showed up just fine over here... {puzzled look}
                    Originally posted by clh333 View Post
                    I had to re-attach the picture because my original login timed out while I was composing my posting. Sometimes it takes me a little time to translate from my initial impulse to a polite response.

                    -CH-
                    Still puzzled?
                    PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

                    Comment


                      #11
                      Originally posted by KC9UDX View Post
                      Looks like a 3/4" floppy drive controllelr from here....
                      WTF is that???
                      PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

                      Comment


                        #12
                        Originally posted by Stone View Post
                        WTF is that???
                        Humour. The card measures 3/4" long on this phablet thing.
                        Be polite and I may let you live.

                        https://www.youtube.com/playlist?lis...5NBVfKX5471R9U

                        Comment


                          #13
                          Originally posted by KC9UDX View Post
                          Humour. The card measures 3/4" long on this phablet thing.
                          That's a scream!
                          PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

                          Comment


                            #14
                            Originally posted by Stone View Post
                            Still puzzled?
                            Nope.

                            Comment


                              #15









                              This might help you....
                              https://www.cnvintage.org/d/55-ibm-5160-xt-720k-3-5

                              Comment

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