OTD 1975, Digital announces the #PDP-11/70
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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.
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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.
@aka_pugs that interface needs to be resurrected. It is gorgeous!
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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.
@aka_pugs There was a time when I could toggle the bootstrap into one of those babies in a few seconds with my eyes closed.
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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.
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?
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@aka_pugs that interface needs to be resurrected. It is gorgeous!
Remembering that from the PDP 11/10, which only had 16 address switches, accessing a 64 kB address space. BTW note the three-bit blocks for making life easier with octal numbers.
We ran serious software in that. Yes it looks gorgeous, but perhaps the aesthetics wears off a bit after many times manually entering the boot loader through those switches.
We did have Unix on our machine and it wasn't multitasking. But a beautiful CPU architecture, much like the Motorola 6809 that was my next one. Running the Microware OS-9 mini-Unix OS, my entry point to Unix.
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Remembering that from the PDP 11/10, which only had 16 address switches, accessing a 64 kB address space. BTW note the three-bit blocks for making life easier with octal numbers.
We ran serious software in that. Yes it looks gorgeous, but perhaps the aesthetics wears off a bit after many times manually entering the boot loader through those switches.
We did have Unix on our machine and it wasn't multitasking. But a beautiful CPU architecture, much like the Motorola 6809 that was my next one. Running the Microware OS-9 mini-Unix OS, my entry point to Unix.
@martinvermeer @stevenray @aka_pugs
The picture is missing the yellowed piece of paper with boot instructions, taped to the rack.
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