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hello new owner of a ibm5155

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    hello new owner of a ibm5155

    hello my name is andre and i recently got a ibm 5155. and i am looking to upgrade a few things on it.

    also i like to know if a v20 will conflict with a math coprocessor?

    if you guys can suggest a list of stuff for this computer i be thankful.

    here is a few photos of the computer.

    IMAG0123.jpgIMAG0126.jpgIMAG0127.jpgIMAG0128.jpgIMAG0129.jpg

    #2
    some more pictures

    IMAG0129.jpgIMAG0130.jpgIMAG0131.jpgIMAG0132.jpgIMAG0133.jpg

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      #3
      last pictures

      IMAG0134.jpgIMAG0135.jpg

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        #4
        Welcome to these forums.

        The rear 15 pin connector marked "MOUSE" is probably a game port.

        Significant 5155 information is at http://www.minuszerodegrees.net

        Originally posted by al1980 View Post
        also i like to know if a v20 will conflict with a math coprocessor?
        Not that I'm aware of, but upgrading the 8088 CPU to a V20 can in some cases cause other issues.

        Originally posted by al1980 View Post
        if you guys can suggest a list of stuff for this computer i be thankful.
        One possible upgrade is to remove the second floppy drive and then fit a hard drive and controller.
        As pictured at http://www.minuszerodegrees.net/5155.../5155_mine.htm

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          #5
          Some pictures with the cover off, please ?
          patscc

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            #6
            if the v20 will cause problems i won't get it.

            i like to know how to get software for this computer.

            is there ways to put software on new blank floppy disk? beside buying old floppy disk off ebay?

            is there a faster 8088 that will fit this computer?

            the guy who i buyed this from said something was wrong with one of the floppy drives.

            this was his quote

            " one of the two 5-1/4-inch drives is not working, or at least it only works intermittently since we were just able to get it to boot the orientation disk in drive A."

            i did not test the 2nd drive. i will tomorrow.

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              #7
              Originally posted by modem7 View Post
              Not that I'm aware of, but upgrading the 8088 CPU to a V20 can in some cases cause other issues.
              I think Modem7 is saying that the V20 is incompatible with a very small number of programs. But I would not let that stop me from upgrading to a V20. The V20 works perfectly in my 5155 and coexists just fine with the 8087. The problem with Drive B is probably caused by sticky carriage rails and/or dirty heads(easily fixed with a careful cleaning and lubrication). You should clean and lube both drives as soon as possible. A very small amount of silicone lube applied with a Q-tip to the carriage rails does wonders.
              I too would like to see pics of the inside.

              Welcome to the forum. There are plenty of helpful members here so don't be afraid to ask for help here.

              Regards,

              Greg

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                #8
                Originally posted by al1980 View Post
                if the v20 will cause problems i won't get it.
                You turned my "can" into "will".

                Originally posted by ibmapc View Post
                I think Modem7 is saying that the V20 is incompatible with a very small number of programs.
                Yes, software and firmware.

                Originally posted by ibmapc View Post
                But I would not let that stop me from upgrading to a V20.
                I agree.

                Originally posted by al1980 View Post
                is there a faster 8088 that will fit this computer?
                It would not result in a performance improvement - the motherboard would run the 'faster rated' 8088 at the same speed as the old 8088.

                Originally posted by al1980 View Post
                is there ways to put software on new blank floppy disk? beside buying old floppy disk off ebay?
                For some techniques of transferring software from new to old PCs, see http://www.minuszerodegrees.net/transfer/transfer.htm

                Comment


                  #9
                  I'm developing a storage option ideally suited to the 5155 - see here (a blatant plug since al1980 is a new member, but hey )

                  I'd not bother with the V20 personally, since after all there are any number of faster portables if that is the goal. I would though strip the machine down and give it a good clean, and probably replace electrolytic caps in the PSU (might find some RIFA filter caps in it too).

                  Comment


                    #10
                    Originally posted by pearce_jj View Post
                    I would though strip the machine down and give it a good clean, and probably replace electrolytic caps in the PSU (might find some RIFA filter caps in it too).
                    Naw, don't bother with the caps in the PSU unless it gives you trouble. The 5155 PSU is pretty robust. I've tried to kill mine a couple of times, but it keeps on goin'. (Do give the old girl a good cleaning though.)
                    Originally posted by pearce_jj View Post
                    I'd not bother with the V20 personally, since after all there are any number of faster portables if that is the goal.
                    As far as speed goes, people don't buy the 5155's for speed. They buy them because they are True Blue IBM and they are cool. But there is nothing wrong with trying to get a little more performance out of one by putting a V20 in it. The V20 will also let you run a few programs that won't run on an 8088 due to it's enhanced intstruction set.

                    Comment


                      #11
                      Hey I have an Orchid Tiny Turbo in mine for those times when I need an extra boost of speed at the LAN party!
                      Current Wish List: 1. IBM 7531 Industrial Series PC 2. NEC MultiSync XL (JC-2001) Monitor 3. MicroSolutions UniDOS card 4. Compaq 14" VGA CRT Monitor (the one that came with the SystemPro). 5. Stacker HW CoProcessor Board MCA BUS. If you have any of the above for sale please PM me. Thank you!

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                        #12
                        pictures inside the computerIMAG0137.jpgIMAG0138.jpgIMAG0139.jpgIMAG0141.jpgIMAG0142.jpg

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                          #13
                          more pictures inside the computerIMAG0143.jpgIMAG0145.jpgIMAG0146.jpgIMAG0147.jpgIMAG0148.jpg

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                            #14
                            more pictures inside the computerIMAG0150.jpgIMAG0151.jpgIMAG0152.jpgIMAG0154.jpgIMAG0155.jpg

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                              #15
                              last pictureIMAG0156.jpg

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