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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.

    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
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          • 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
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            • 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
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                • 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
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                    • 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
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                            • jwcph@helvede.netJ jwcph@helvede.net shared this topic
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