Announcement

Collapse

Forum Rules and Etiquette

Our mission ...

This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

This forum has been around in this format for over 15 years. These rules and guidelines help us maintain a healthy and active community, and we moderate the forum to keep things on track. Please familiarize yourself with these rules and guidelines.


Rule 1: Remain civil and respectful

There are several hundred people who actively participate here. People come from all different backgrounds and will have different ways of seeing things. You will not agree with everything you read here. Back-and-forth discussions are fine but do not cross the line into rude or disrespectful behavior.

Conduct yourself as you would at any other place where people come together in person to discuss their hobby. If you wouldn't say something to somebody in person, then you probably should not be writing it here.

This should be obvious but, just in case: profanity, threats, slurs against any group (sexual, racial, gender, etc.) will not be tolerated.


Rule 2: Stay close to the original topic being discussed
  • If you are starting a new thread choose a reasonable sub-forum to start your thread. (If you choose incorrectly don't worry, we can fix that.)
  • If you are responding to a thread, stay on topic - the original poster was trying to achieve something. You can always start a new thread instead of potentially "hijacking" an existing thread.



Rule 3: Contribute something meaningful

To put things in engineering terms, we value a high signal to noise ratio. Coming here should not be a waste of time.
  • This is not a chat room. If you are taking less than 30 seconds to make a post then you are probably doing something wrong. A post should be on topic, clear, and contribute something meaningful to the discussion. If people read your posts and feel that their time as been wasted, they will stop reading your posts. Worse yet, they will stop visiting and we'll lose their experience and contributions.
  • Do not bump threads.
  • Do not "necro-post" unless you are following up to a specific person on a specific thread. And even then, that person may have moved on. Just start a new thread for your related topic.
  • Use the Private Message system for posts that are targeted at a specific person.


Rule 4: "PM Sent!" messages (or, how to use the Private Message system)

This forum has a private message feature that we want people to use for messages that are not of general interest to other members.

In short, if you are going to reply to a thread and that reply is targeted to a specific individual and not of interest to anybody else (either now or in the future) then send a private message instead.

Here are some obvious examples of when you should not reply to a thread and use the PM system instead:
  • "PM Sent!": Do not tell the rest of us that you sent a PM ... the forum software will tell the other person that they have a PM waiting.
  • "How much is shipping to ....": This is a very specific and directed question that is not of interest to anybody else.


Why do we have this policy? Sending a "PM Sent!" type message basically wastes everybody else's time by making them having to scroll past a post in a thread that looks to be updated, when the update is not meaningful. And the person you are sending the PM to will be notified by the forum software that they have a message waiting for them. Look up at the top near the right edge where it says 'Notifications' ... if you have a PM waiting, it will tell you there.

Rule 5: Copyright and other legal issues

We are here to discuss vintage computing, so discussing software, books, and other intellectual property that is on-topic is fine. We don't want people using these forums to discuss or enable copyright violations or other things that are against the law; whether you agree with the law or not is irrelevant. Do not use our resources for something that is legally or morally questionable.

Our discussions here generally fall under "fair use." Telling people how to pirate a software title is an example of something that is not allowable here.


Reporting problematic posts

If you see spam, a wildly off-topic post, or something abusive or illegal please report the thread by clicking on the "Report Post" icon. (It looks like an exclamation point in a triangle and it is available under every post.) This send a notification to all of the moderators, so somebody will see it and deal with it.

If you are unsure you may consider sending a private message to a moderator instead.


New user moderation

New users are directly moderated so that we can weed spammers out early. This means that for your first 10 posts you will have some delay before they are seen. We understand this can be disruptive to the flow of conversation and we try to keep up with our new user moderation duties to avoid undue inconvenience. Please do not make duplicate posts, extra posts to bump your post count, or ask the moderators to expedite this process; 10 moderated posts will go by quickly.

New users also have a smaller personal message inbox limit and are rate limited when sending PMs to other users.


Other suggestions
  • Use Google, books, or other definitive sources. There is a lot of information out there.
  • Don't make people guess at what you are trying to say; we are not mind readers. Be clear and concise.
  • Spelling and grammar are not rated, but they do make a post easier to read.
See more
See less

Thinkpads - 755C and 755CD

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #31
    My laptop collection goes from NECV20 to Pentium M, must have 80+ models (mostly thinkpads). Looking for add-on cards is something I have done over the years and you would be surprised how many devices there are for PCMCIA and CARDBUS. I prefer cards without dongles but sometimes that is hard to do (Tokenring for example). If anything that 3COM ethernet I listed will work with any OS (since it tends to be the #1 target they all test with).
    What I collect: 68K/Early PPC Mac, DOS/Win 3.1 era machines, Amiga/ST, C64/128
    Nubus/ISA/VLB/MCA/EISA cards of all types
    Boxed apps and games for the above systems
    Analog video capture cards/software and complete systems

    Comment


      #32
      Originally posted by Unknown_K View Post
      My laptop collection goes from NECV20 to Pentium M, must have 80+ models (mostly thinkpads). Looking for add-on cards is something I have done over the years and you would be surprised how many devices there are for PCMCIA and CARDBUS. I prefer cards without dongles but sometimes that is hard to do (Tokenring for example). If anything that 3COM ethernet I listed will work with any OS (since it tends to be the #1 target they all test with).
      The 3com card you linked to is not for sale in my country, but I took your advice and found this one which I just bought for $11 and it includes the dongle. 3CCFE574BT
      I found a DOS driver, and it looks like one might be available for OS/2 but I haven't dug it up yet. We'll see.
      WANTED: Cardinal 2450MNP modem.

      Comment


        #33
        Well it's back to the drawing board. After a week, I just got a note from the seller that he has refunded my money. Apparently he couldn't find the item when he went to ship it. What a complete waste of my time. Now I'll spend another hour looking on eBay, and it will be another couple of weeks before I can test out this laptop. I've never had any luck with network cards or dongles. For some reason it just seems to be a world of flakes and sheisters.

        Edit: I should have just taken MikeS up on his offer, but I couldn't find drivers at the time.
        WANTED: Cardinal 2450MNP modem.

        Comment


          #34
          Some months ago I too got an old ThinkPad, here I talk about it.

          Those machines run great with DOS, Windows 95 and Linux kernels 2.4.
          Last edited by Pepinno; June 23, 2012, 03:27 PM.

          Comment


            #35
            Originally posted by Pepinno View Post
            Some months ago I too got an old ThinkPad, here I talk about it.

            Those machines run great with DOS, Windows 95 and Linux kernels 2.4.
            I might try an early Linux or BSD on the 755C when I get a network card. I paid my usual price for mine, but in the end the more valuable would probably be the box they came in, which is probably worth a couple of hundred used.
            WANTED: Cardinal 2450MNP modem.

            Comment


              #36
              Originally posted by MikeS View Post
              Any of these any use:
              3Com 3CCFE575BT
              3Com 3CCFE575CT
              GVC 10Mbps Ethernet Adapter; no model#, FCC ID MQ4EC2T
              IBM Ethernet II p/n 42h4916

              Have some spare dongles as well.
              It looks like the "GVC" has a DOS driver. I expect the IBM one does too, but I haven't dug it out yet.

              PS: I just discovered that Linux does "Windows mode". I can extract those EXE files that say "cannot open in DOS mode" when you try it. That saves a lot of trouble looking in those driver packs to see what's there.
              WANTED: Cardinal 2450MNP modem.

              Comment


                #37
                By the way, Ole Juul, in case you decide to upgrade the IDE hard disks on those laptops, do not miss this post.

                About getting ethernet going on those machines, get a 16 bit PCMCIA card (without the golden border in the contact side) from 3COM that is "NE2000" compatible. That HAS to work with OS/2. And don't nuke OS/2 from those machines, without first making a Ghost backup of them, you never know when you may "revisit" that operating system later...

                Comment


                  #38
                  Originally posted by Pepinno View Post
                  By the way, Ole Juul, in case you decide to upgrade the IDE hard disks on those laptops, do not miss this post.

                  About getting ethernet going on those machines, get a 16 bit PCMCIA card (without the golden border in the contact side) from 3COM that is "NE2000" compatible. That HAS to work with OS/2. And don't nuke OS/2 from those machines, without first making a Ghost backup of them, you never know when you may "revisit" that operating system later...
                  I've spent many hours looking for 3COM on dBay and (apart from the one that wouldn't send it to me) they come without a dongle. That means that the price is outrageous because the dongles often cost more than the cards and I have pay shipping on both. IOW, 3COM is probably not a realistic choice.

                  What I'm going to do is take the HDD from the 755CD and use it with another OS in the 755C. Thus keeping the original OS/2 HDD intact. I like the idea of having a working install of that which I can look at by simply exchanging the HDDs. I'm dumping the 755CD but the fellow who wanted it disappeared. I'll just keep it for parts since it is so much less attractive than the simpler model.
                  WANTED: Cardinal 2450MNP modem.

                  Comment


                    #39
                    Originally posted by Ole Juul View Post
                    I just acquired two laptops and would like some ideas and information.
                    I own a 755CD (Pentium 75MHz) and have made a YouTube video about it. It's one of my favorite laptops and the fact that it does video capture sets it apart. I mostly run it with DOS & Win3.1 (the configuration it shipped with) but have also had Win95 and Warp 3 Connect installed at various times. Warp was interesting but I'm not very familiar with it and had problems trying to configure networking - you would probably have better luck than I did. Win95 was usable but slow - here's another YouTube video if you want to see it in action. I've used both Xircom and 3Com PCMCIA ethernet adapters successfully.

                    A couple of points to keep in mind - there's a green shrink-wrapped bundle of coin cell batteries to the left of the RAM slots - they typically leak and if yours haven't already, I'd recommend removing them because they will cause corrosion to adjacent parts of the motherboard. I think the batteries are only for memory retention during standby mode so it's no big loss to take them out. Also be careful about leakage of the main battery - I leave mine out since it's dead anyway and I always run on wall power. When I first bought my 755CD, there was some display corruption due to poor contacts, so I disassembled it and cleaned the cable connectors. Be careful if you decide to disassemble yours - there are some delicate points like the plastic hinge covers at the rear, and internally it has a sandwich of three or four different circuit boards that can be tricky to separate.

                    Overall the 755CD is a great collectible laptop - very versatile and feature-rich. You should try to get the joystick cables and video adapter cables if you don't already have them.
                    Silicon Classics on: YouTube | Twitter | Facebook | Google+

                    Comment


                      #40
                      Thanks for the info SC. The 755CD did already have some damage from the main battery. Only the floppy drive got effected, which is not too serious because it would probably be desirable to plug in a CD instead. The thing about video capture is interesting too. However, I'm not going to fiddle with that one since I prefer the simpler (more elegant) 755C. The 755CD will just be for parts - unless someone is interested in it minus the HDD and floppy.

                      Also, I just found a suitable network card on eBay. It's a Xircom RE-100 which should work with just about anything. I still want to try the OS/2 installation which I will keep intact on the one drive. Then I'll probably do DOS on the other drive.
                      WANTED: Cardinal 2450MNP modem.

                      Comment

                      Working...
                      X