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Built my first computer 40 years ago

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  • M Offline
    M Offline
    Matthew Dennis
    wrote on last edited by
    #1

    Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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    • M Matthew Dennis

      Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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      TheRealRarius
      wrote on last edited by
      #2

      I can't compete with 40 years (I'm only 42!), but back when I was in high school I built a 6502 based system with 16KB of memory and 4KB of EPROM that talked to my BBC B via RS232... Does this count as a co-processor or a discrete component micro-controller?

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      • M Matthew Dennis

        Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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        Rage
        wrote on last edited by
        #3

        This is cool on so many levels. :thumbsup:

        ~RaGE();

        I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus Do not feed the troll ! - Common proverb

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        • M Matthew Dennis

          Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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          Dalek Dave
          wrote on last edited by
          #4

          About 20 years ago I wired a PDP 11 to an AS400 so that we could grab ancient data. (There was a team of three of us, not a solo effort I hasten to add). It was a frustrating week, but ultimately successful.

          --------------------------------- I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^]

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          • D Dalek Dave

            About 20 years ago I wired a PDP 11 to an AS400 so that we could grab ancient data. (There was a team of three of us, not a solo effort I hasten to add). It was a frustrating week, but ultimately successful.

            --------------------------------- I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^]

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            Matthew Dennis
            wrote on last edited by
            #5

            35 years ago, on a Work Term, there was a PDP 8 that we would play Adventure on. We dumped the source code so we could figure out how to get the last of 360 points. We had 359, but hadn't dropped the magazine at Wit's End :)

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            • M Matthew Dennis

              Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

              D Offline
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              dan sh
              wrote on last edited by
              #6

              I wrote my first C++ program and copied it to a floppy disk 14 years back. Other than that, I have never done any cool stuff like this. BTW, when you say build, do you buy parts and assemble yourself? Reason I am asking is because we have culture here in India that you just go to shop and tell the items you need and they assemble it for you.

              "Bastards encourage idiots to use Oracle Forms, Web Forms, Access and a number of other dinky web publishing tolls.", Mycroft Holmes[^]

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              • M Matthew Dennis

                Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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                Chris C B
                wrote on last edited by
                #7

                Hah! Bunch of whippersnappers! When I was vewy vewy young, I built one of these: http://www.oldcomputermuseum.com/heathkit_ec1.html[^] Standard output was to an oscilloscope. :omg: :wtf:

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                • D dan sh

                  I wrote my first C++ program and copied it to a floppy disk 14 years back. Other than that, I have never done any cool stuff like this. BTW, when you say build, do you buy parts and assemble yourself? Reason I am asking is because we have culture here in India that you just go to shop and tell the items you need and they assemble it for you.

                  "Bastards encourage idiots to use Oracle Forms, Web Forms, Access and a number of other dinky web publishing tolls.", Mycroft Holmes[^]

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                  B Offline
                  BobJanova
                  wrote on last edited by
                  #8

                  A custom build over here is generally 'you buy the parts and fit them together', as labour has always been pretty expensive so you get a big cost saving by doing that, plus British men enjoy putting things together themselves (as you can see from our national love of DIY, allotments etc ... and arguably our innovation culture too).

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                  • C Chris C B

                    Hah! Bunch of whippersnappers! When I was vewy vewy young, I built one of these: http://www.oldcomputermuseum.com/heathkit_ec1.html[^] Standard output was to an oscilloscope. :omg: :wtf:

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                    Nagy Vilmos
                    wrote on last edited by
                    #9

                    Ooh, modern! ;P [^]

                    Reality is an illusion caused by a lack of alcohol

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                    • M Matthew Dennis

                      Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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                      Ravi Bhavnani
                      wrote on last edited by
                      #10

                      Very cool, indeed!  I still have my Jan '75 Popular Electronics issue that featured the Altair 8800. /ravi

                      My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

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                      • D dan sh

                        I wrote my first C++ program and copied it to a floppy disk 14 years back. Other than that, I have never done any cool stuff like this. BTW, when you say build, do you buy parts and assemble yourself? Reason I am asking is because we have culture here in India that you just go to shop and tell the items you need and they assemble it for you.

                        "Bastards encourage idiots to use Oracle Forms, Web Forms, Access and a number of other dinky web publishing tolls.", Mycroft Holmes[^]

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                        Matthew Dennis
                        wrote on last edited by
                        #11

                        You bet. The kit came with everything in bags, except for the solder and soldering iron. Several nights and burnt fingers later ... :) Oh yeah, keyboard and monitor were other projects to assemble.

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                        • M Matthew Dennis

                          Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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                          Phil J Pearson
                          wrote on last edited by
                          #12

                          I designed and built an 8080-based computer on a single board with wire-wrap connections. It had a 6-digit 7-segment LED display and a hex keypad, 1k of ROM and 256 bytes of static RAM. I/O was an 8-bit programmable I/O chip. I wrote some real programs directly in machine code on the keypad (there was no other way to get code into it). I think that was all in 1976.

                          Phil


                          The opinions expressed in this post are not necessarily those of the author, especially if you find them impolite, inaccurate or inflammatory.

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                          • T TheRealRarius

                            I can't compete with 40 years (I'm only 42!), but back when I was in high school I built a 6502 based system with 16KB of memory and 4KB of EPROM that talked to my BBC B via RS232... Does this count as a co-processor or a discrete component micro-controller?

                            A Offline
                            A Offline
                            Albert Holguin
                            wrote on last edited by
                            #13

                            TheRealRarius wrote:

                            can't compete with 40 years (I'm only 42!)

                            slacker ;P

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                            • M Matthew Dennis

                              35 years ago, on a Work Term, there was a PDP 8 that we would play Adventure on. We dumped the source code so we could figure out how to get the last of 360 points. We had 359, but hadn't dropped the magazine at Wit's End :)

                              C Offline
                              C Offline
                              Corporal Agarn
                              wrote on last edited by
                              #14

                              I played Adventure on PDP circa 1978 but do not remember which version. Never could cross the bridge.

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                              • M Matthew Dennis

                                Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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                                Ritwesh
                                wrote on last edited by
                                #15

                                I am 16 yrs old now. I started learning computer reparing when I was 10 yrs old. In the course of my work the earliest I assembled a Pentium 2 machine. Oh, yes! I also possess a 1.2GB hard disk which is in perfect running condition too! I have set it up with my old Pentium 3 machine and have installed Win98 in the hard disk.

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                                • M Matthew Dennis

                                  Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

                                  OriginalGriffO Online
                                  OriginalGriffO Online
                                  OriginalGriff
                                  wrote on last edited by
                                  #16

                                  I can't remember exactly when or why, but in the late 70's I wired some core memory by hand. Does that count? It was incredibly tedious, fiddly and boring, but it worked. Took me a couple of days... It was about the size of an SD card, plus a wooden frame to hold the wires, and it held 8 bytes! Yep. You read that right. 64 bits. That was the days when computing was for Real Men! :laugh:

                                  The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)

                                  "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                                  "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

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                                  • M Matthew Dennis

                                    Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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                                    Lost User
                                    wrote on last edited by
                                    #17

                                    I built my first computer 35 years ago, it has a CDP1802 processor and a 86 pin non-standard expansion bus. The cards in the bus slot are mostly for IO or memory expansion (4k). And the best part: It sits on my second desk and still works :)

                                    Sent from my BatComputer via HAL 9000 and M5

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                                    • L Lost User

                                      I built my first computer 35 years ago, it has a CDP1802 processor and a 86 pin non-standard expansion bus. The cards in the bus slot are mostly for IO or memory expansion (4k). And the best part: It sits on my second desk and still works :)

                                      Sent from my BatComputer via HAL 9000 and M5

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                                      AspDotNetDev
                                      wrote on last edited by
                                      #18

                                      My first computer (IIRC, a 486 bought at a yard sale) was destroyed in a garage fire. :sigh:

                                      Thou mewling ill-breeding pignut!

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                                      • M Matthew Dennis

                                        Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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                                        S Houghtelin
                                        wrote on last edited by
                                        #19

                                        The first "serious" computer I put together was a IBM PC with an 8088 CPU that fell off a truck, literally. This was back in '83-'84, it was in pieces and I somehow was able to talk the owner of the company I worked for to let me have all the parts (insurance had covered the cost and he had already got the replacement). I was going to tech at the time and was on good terms with the instructors there so I was able to bring it in and worked on it there. It had no hard drive as ran off the floppies. The case was bent to heck and the boards had come loose. I put it together as best I could. I needed to tinker around with the floppy disk drive for a week or so, couldn't afford to buy a new one. I finally managed to get the PC to boot. Of course I played with it for about a month, but I ended up trading it for a ’71 Cuda. (I couldn’t make that trade these days, does anybody have a Cuda they want to trade for my computer?) :)

                                        It was broke, so I fixed it.

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                                        • M Matthew Dennis

                                          Just realized that I build my first computer 40 38 years ago. A Southwest Technical Products SS50 bus system. Can't even remember which processor was in it. It was a SWTP 6800 using the Motorola MC6800 8 bit processor. I later designed and build a MC6809 CPU, with 1M memory and CRT controller, card for a University project course. Anyone else remember their stone-age computing accomplishments? Thanks for the links to the information that corrected my memory. "There are 3 things that go with age. The first is memory and I can't remember the other 2". My Mom.

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                                          Lost User
                                          wrote on last edited by
                                          #20

                                          I don't go back quite that far but your post made me remember a quaint story from nearly 20 years ago. My company was switching from a Nixdorf (mid-range host with dumb terminals) to a Novell network. I had nothing to do with the Nixdorf but was the "Network Manager" for the Novell. We were moving all the data (customer info, vendor info, customer orders, purchase orders, item master, stock locations / quantities, bills of material, etc...) from the Nixdorf (which was nearly 100% full) to a "modern" client/server based MRP system. We hired a Nixdorf wizard to extract all the data into comma delimited ASCII files so I could ultimately import it into the MRP system. He used a proprietary interface card to link the Nixdorf to a stand-alone PC. It took nearly 12 hours to run his export programs and write to the PC. Finally he gave me the PC with "all the data". In less than 30 minutes, I copied the files to my PC, ran them through a few conversions to prepare them for import before finally compressing them with PKZIP and copying them to a single 1.2Mb floppy!

                                          Government is not reason; it is not eloquent; it is force. Like fire, it is a dangerous servant and a fearful master. ~ George Washington

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