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  3. OTD 1975, Digital announces the #PDP-11/70

OTD 1975, Digital announces the #PDP-11/70

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  • aka_pugs@mastodon.socialA aka_pugs@mastodon.social

    OTD 1975, Digital announces the #PDP-11/70.
    With up to 4 Megabytes(!) of memory.

    Princeton's PDP-11/45 had 80K bytes of memory. Ran UNIX just fine.

    hmallett@toot.walesH This user is from outside of this forum
    hmallett@toot.walesH This user is from outside of this forum
    hmallett@toot.wales
    wrote sidst redigeret af
    #8

    @aka_pugs 4 MB must have been a huge amount of memory at that time.

    mason@partychickens.netM 1 Reply Last reply
    0
    • aka_pugs@mastodon.socialA aka_pugs@mastodon.social

      OTD 1975, Digital announces the #PDP-11/70.
      With up to 4 Megabytes(!) of memory.

      Princeton's PDP-11/45 had 80K bytes of memory. Ran UNIX just fine.

      J This user is from outside of this forum
      J This user is from outside of this forum
      johnrohde@helvede.net
      wrote sidst redigeret af
      #9

      @aka_pugs There is a retro RasPi version that I totally crave.

      1 Reply Last reply
      0
      • aka_pugs@mastodon.socialA aka_pugs@mastodon.social

        OTD 1975, Digital announces the #PDP-11/70.
        With up to 4 Megabytes(!) of memory.

        Princeton's PDP-11/45 had 80K bytes of memory. Ran UNIX just fine.

        winkleink@mastodon.socialW This user is from outside of this forum
        winkleink@mastodon.socialW This user is from outside of this forum
        winkleink@mastodon.social
        wrote sidst redigeret af
        #10

        @aka_pugs in 1987 my college was still using one. Default password was pass. Found unassigned accounts and had fun.
        Coded a version of Patients/Solitaire on it and one day went into the computer lap and everyone was playing it. #i May have negatively affected the grades that year.

        Edited to change 1087 to 1987

        1 Reply Last reply
        0
        • hmallett@toot.walesH hmallett@toot.wales

          @aka_pugs 4 MB must have been a huge amount of memory at that time.

          mason@partychickens.netM This user is from outside of this forum
          mason@partychickens.netM This user is from outside of this forum
          mason@partychickens.net
          wrote sidst redigeret af
          #11

          @hmallett @aka_pugs My first computer had 16K in 1982. No Unix, sadly. Unix wouldn't appear in my house until the 90s, via NetBSD.

          1 Reply Last reply
          0
          • chris@mastodon.mihalis.netC chris@mastodon.mihalis.net

            @stevenray @aka_pugs
            https://obsolescence.dev/pdp11.html

            stevenray@sfba.socialS This user is from outside of this forum
            stevenray@sfba.socialS This user is from outside of this forum
            stevenray@sfba.social
            wrote sidst redigeret af
            #12

            @chris @aka_pugs ha, that's incredible! Thanks for this.

            chris@mastodon.mihalis.netC 1 Reply Last reply
            0
            • stevenray@sfba.socialS stevenray@sfba.social

              @chris @aka_pugs ha, that's incredible! Thanks for this.

              chris@mastodon.mihalis.netC This user is from outside of this forum
              chris@mastodon.mihalis.netC This user is from outside of this forum
              chris@mastodon.mihalis.net
              wrote sidst redigeret af
              #13

              @stevenray @aka_pugs I never spotted until today that one of the photos on this website shows Ken Thompson (the father of Unix) with a pidp-11 he assembled. That makes it as legit as could be for running Unix

              stevenray@sfba.socialS 1 Reply Last reply
              0
              • chris@mastodon.mihalis.netC chris@mastodon.mihalis.net

                @stevenray @aka_pugs I never spotted until today that one of the photos on this website shows Ken Thompson (the father of Unix) with a pidp-11 he assembled. That makes it as legit as could be for running Unix

                stevenray@sfba.socialS This user is from outside of this forum
                stevenray@sfba.socialS This user is from outside of this forum
                stevenray@sfba.social
                wrote sidst redigeret af
                #14

                @chris @aka_pugs yup, saw that and I thought so, too!

                1 Reply Last reply
                0
                • paul_ipv6@infosec.exchangeP paul_ipv6@infosec.exchange

                  @aka_pugs

                  i was trying to remember the boot sequence for a PDP 11/70 from disk.

                  i think that the 21 addr switches were an octal 17773052 but can't remember what we did with the 7 switches on the right. it was four movements, ending with "start"?

                  anyone remember better than me?

                  peterhoneyman@a2mi.socialP This user is from outside of this forum
                  peterhoneyman@a2mi.socialP This user is from outside of this forum
                  peterhoneyman@a2mi.social
                  wrote sidst redigeret af
                  #15

                  @paul_ipv6 @aka_pugs

                  773110 is burned into my brain

                  paul_ipv6@infosec.exchangeP 1 Reply Last reply
                  0
                  • aka_pugs@mastodon.socialA aka_pugs@mastodon.social

                    OTD 1975, Digital announces the #PDP-11/70.
                    With up to 4 Megabytes(!) of memory.

                    Princeton's PDP-11/45 had 80K bytes of memory. Ran UNIX just fine.

                    peterhoneyman@a2mi.socialP This user is from outside of this forum
                    peterhoneyman@a2mi.socialP This user is from outside of this forum
                    peterhoneyman@a2mi.social
                    wrote sidst redigeret af
                    #16

                    @aka_pugs hmm, my recollection is 128k

                    1 Reply Last reply
                    0
                    • peterhoneyman@a2mi.socialP peterhoneyman@a2mi.social

                      @paul_ipv6 @aka_pugs

                      773110 is burned into my brain

                      paul_ipv6@infosec.exchangeP This user is from outside of this forum
                      paul_ipv6@infosec.exchangeP This user is from outside of this forum
                      paul_ipv6@infosec.exchange
                      wrote sidst redigeret af
                      #17

                      @peterhoneyman @aka_pugs

                      boot from tape or different type of disk?

                      peterhoneyman@a2mi.socialP 1 Reply Last reply
                      0
                      • paul_ipv6@infosec.exchangeP paul_ipv6@infosec.exchange

                        @peterhoneyman @aka_pugs

                        boot from tape or different type of disk?

                        peterhoneyman@a2mi.socialP This user is from outside of this forum
                        peterhoneyman@a2mi.socialP This user is from outside of this forum
                        peterhoneyman@a2mi.social
                        wrote sidst redigeret af
                        #18

                        @paul_ipv6 @aka_pugs

                        I forget. I think we had an RM-80 (maybe?) and two RK-05 removables

                        aka_pugs@mastodon.socialA 1 Reply Last reply
                        0
                        • peterhoneyman@a2mi.socialP peterhoneyman@a2mi.social

                          @paul_ipv6 @aka_pugs

                          I forget. I think we had an RM-80 (maybe?) and two RK-05 removables

                          aka_pugs@mastodon.socialA This user is from outside of this forum
                          aka_pugs@mastodon.socialA This user is from outside of this forum
                          aka_pugs@mastodon.social
                          wrote sidst redigeret af
                          #19

                          @peterhoneyman @paul_ipv6 RM-80 was after my time.

                          1 Reply Last reply
                          0
                          • aka_pugs@mastodon.socialA aka_pugs@mastodon.social

                            OTD 1975, Digital announces the #PDP-11/70.
                            With up to 4 Megabytes(!) of memory.

                            Princeton's PDP-11/45 had 80K bytes of memory. Ran UNIX just fine.

                            flux@wandering.shopF This user is from outside of this forum
                            flux@wandering.shopF This user is from outside of this forum
                            flux@wandering.shop
                            wrote sidst redigeret af
                            #20

                            @aka_pugs yeah, but not 4MB per process 😉

                            1 Reply Last reply
                            0
                            • aka_pugs@mastodon.socialA aka_pugs@mastodon.social

                              OTD 1975, Digital announces the #PDP-11/70.
                              With up to 4 Megabytes(!) of memory.

                              Princeton's PDP-11/45 had 80K bytes of memory. Ran UNIX just fine.

                              larsbrinkhoff@mastodon.sdf.orgL This user is from outside of this forum
                              larsbrinkhoff@mastodon.sdf.orgL This user is from outside of this forum
                              larsbrinkhoff@mastodon.sdf.org
                              wrote sidst redigeret af
                              #21

                              @aka_pugs The 11/74 was cancelled because it was to good compared to contemporary VAX models.

                              1 Reply Last reply
                              0
                              • paul_ipv6@infosec.exchangeP paul_ipv6@infosec.exchange

                                @aka_pugs

                                i was trying to remember the boot sequence for a PDP 11/70 from disk.

                                i think that the 21 addr switches were an octal 17773052 but can't remember what we did with the 7 switches on the right. it was four movements, ending with "start"?

                                anyone remember better than me?

                                T This user is from outside of this forum
                                T This user is from outside of this forum
                                tanavit@toot.aquilenet.fr
                                wrote sidst redigeret af
                                #22

                                @paul_ipv6

                                I guess these switches were, among others, used to read and write memory.

                                I had to program this computer in binary (not assembler, binary) when I learnt computer science some years ago.

                                In my memory, the keys were shades of blue.

                                @aka_pugs

                                1 Reply Last reply
                                0
                                • jwcph@helvede.netJ jwcph@helvede.net shared this topic
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