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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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  • 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.

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    • 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
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      • 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!

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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
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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.

              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

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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
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                • 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.

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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.

                      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 😉

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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.

                        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.

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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?

                          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

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