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My Latest Buy (5160)

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    #31
    Originally posted by MikeS View Post
    Hmm, almost suggests that maybe it's a Danish version of a -1401; maybe the eBay one is dual-mode after all.
    I'd guess so to. The table on Wikipedia explains it as a "Norwegian 102-key", and it was manufactured from 1989 to sometime around 1992/93.

    I opened it once, and IIRC; 1387628 reffers to the internals (which should be equal to the internals of a 1391401 if our hypothesis is true).
    Current systems owned by me:
    Vintage:IBM PC/XT submodel 087 ( 1983 ), [Kon]tiki-100 rev. C (1983), Compaq Portable I ( 1984 ), IBM PC/XT submodel 078 ( 1985 ), IBM PC/XT286 ( ~1986 ), 3x Nintendo Entertainement Systems ( 1987 ).
    Obsolete:Commodore A500 ( ~1990 ), IBM PS/2 model 70/386 type 8570-161 ( 1991 ), Atari Lynx II ( ~1992 ), Generic Intel 486SX PC ( ~1993 ), AT/T Globalyst Pentium w/FDIV bug MB ( 1994 ), Compaq 486DX4 laptop ( ~1995 ).

    Comment


      #32
      Originally posted by strollin View Post
      Many (most?) 16-bit VGA cards will work in an 8-bit slot. I noticed that the asking price for 8-bit VGA cards has gone way up on EBay, many were asking $150+!!! The 16-bit cards are much more reasonable, around $25 or so.
      We've started a list of them here:
      http://www.wiki.vintage-computer.com..._ISA_VGA_cards

      Not all of them work, hence the importance of the list to know what you're getting into. true IBM machines seemed to be even more picky about this. IIRC, I have a card in my zenith 8088 that works great, but when I put it in my XT it just beeps at me. (and yes I played with the dip switches) That makes me think that I should convert that wiki into more of a table with columns for "works on an XT, PC, clone"...

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        #33
        hello
        back to the keyboards..
        I did find a link (have not investigated further)
        http://www.datacal.com/p-1253-xt-key...-g81-1854.aspx

        ..but kind of funny - you can buy a NEW keyboard some 25 years after the original were made )
        /cimonvg

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          #34
          Nope, XT-interface keyboards are still used on a variety of industrial equipment, such as scales. Their advantage is that they're very simple to interface, unlike AT or PS/2 keyboards.

          FWIW, Cherry is a good brand. Not "clicky" but solidly constructed. I've got some NCR-branded Cherry XT and AT keyboards. And that keyboard is actually manually switchable between XT and AT mode.

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            #35
            Err, this "5160" is actually a clone is it not? In that case, it won't matter much to have a matching IBM keyboard.
            "Will the Highways on the internets become more few?"

            V'Ger XT

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              #36
              Originally posted by Anonymous Coward View Post
              Err, this "5160" is actually a clone is it not? In that case, it won't matter much to have a matching IBM keyboard.
              We have already discussed that in another thread, but it turns out that the top of the chassis is from an IBM 5150, the base of the chassis is from a clone, and the motherboard is from an actual IBM 5160 (rev.1).

              Since the motherboard decides what kind of keyboard to use, an XT-compatible keyboard must be used.
              Current systems owned by me:
              Vintage:IBM PC/XT submodel 087 ( 1983 ), [Kon]tiki-100 rev. C (1983), Compaq Portable I ( 1984 ), IBM PC/XT submodel 078 ( 1985 ), IBM PC/XT286 ( ~1986 ), 3x Nintendo Entertainement Systems ( 1987 ).
              Obsolete:Commodore A500 ( ~1990 ), IBM PS/2 model 70/386 type 8570-161 ( 1991 ), Atari Lynx II ( ~1992 ), Generic Intel 486SX PC ( ~1993 ), AT/T Globalyst Pentium w/FDIV bug MB ( 1994 ), Compaq 486DX4 laptop ( ~1995 ).

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                #37
                My special XT/AT compatible Model M that I think was shipped out with an XT-286 at some point is...

                Part No. 1390120
                S/N No. 2158709
                Date 27OCT86
                Plt No F2
                Model M

                Every key I've attempted to use works and I've used this system on my 5160 and my modern Core 2 Duo (w/ AT->PS/2 Adapter, no electrical components, just wiring adapter) so it definitely works in both ways just fine - autosensing.

                It has a silver IBM square metal logo in the top right, and no LEDs.

                Someone left this poor keyboard out in the rain behind a Goodwill (it's not even legal to leave things there after hours..). I was driving by and saw it, and immediately stopped the car to investigate. :O

                Fortunately these things are quite resilient and the rain didn't damage it at all.
                More commonly known as "Yushatak" - www.yushatak.com
                Focused on 486 and Pentium Machines
                I collect All-In-One PCs and Keyboard PCs, especially Compaq.

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                  #38
                  Okay, the computer arrived today! And it shows signs of life! I connected the CGA to my Commodore monitor using the composite video jack. It turns on, and then starts checking all 640KB of RAM. After that, it tells me there is an ST-251 HDD (more specifically, an ST-251-1). But then it tries to boot, and fails...

                  Where should I go from here? I don't have any 5.25" boot disks, only DOS 6.22 on (3) 3.5" diskettes.

                  Any suggestions?

                  Kyle

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                    #39
                    If you can find an edge-to-header type of 3.5" drive adapter and the adapter for the power leads, you can hook up a 3.5" floppy in place of the 5.25" and create a 3.5" DS2D (720K) floppy and boot from that.

                    If it's a real 5160, it should go to BASIC if boot fails.

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                      #40
                      Does the access light of the hard drive come on at all?

                      Do hear hear/feel the platters in the drive turning?

                      Comment


                        #41
                        I still have to get me a keyboard. I think Raven might be able to get me hooked with an XT keyboard soon. However, for the time being, I'd love to be able to write a program for my Arduino to emulate an XT keyboard.

                        I do have a cable that will connect my 3.5" drive to the floppy, but I don't have a power lead adapter. I presume DigiKey has the parts to make my own. If they do, I'll tag the parts onto my next order.

                        When it gives me the disk error, it wants me to press F1 to continue. Would it normally go to BASIC right after that?

                        Kyle

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                          #42
                          Originally posted by modem7 View Post
                          Does the access light of the hard drive come on at all?

                          Do hear hear/feel the platters in the drive turning?
                          Access light has not lit up for me yet. However, I can feel and hear the platters a little bit. But with the noisy fan from the PSU, it's pretty hard to hear!

                          Kyle

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                            #43
                            Originally posted by antiquekid3 View Post
                            Access light has not lit up for me yet. However, I can feel and hear the platters a little bit. But with the noisy fan from the PSU, it's pretty hard to hear!
                            We ask because 'stiction' is a common problem in old drives. Do a search of these forums for 'stiction'. It would be good to eliminate that as a cause early up. Your "I can feel and hear the platters a little bit" doesn't sound like you're convinced. You could try removing the drive from the chassis and holding it in your hands. If the platters are spinning, the drive will resist being moved out-of-plane (just the the spinning wheels on a bicycle).

                            According to http://www.redhill.net.au/d/d-a.html, "The ST-251 made a unique hollow knocking noise on start-up, once heard never forgotten, and by far the most distinctive sound of any drive yet made." Are you hearing that?

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                              #44
                              Okay, I can say with absolute certainty that the ST-251 is spinning. But it still won't boot up. It does make a knocking sound at startup. The light still won't come on.

                              Kyle

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                                #45
                                You may have to try a low-level format of the drive. If the drive is bad, I wouldn't recommend replacing it with another MFM drive. The XT-IDE project was in response to the problem of failing MFM drives. Consider one of those boards if you determine the drive can't be salvaged.

                                Chuck

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