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DigitalMars/Empire-for-PDP-11

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Empire for the PDP-11 in Macro-11 assembler language

13 mentions on Hacker News by 1 person: 0 stories, 13 comments · first 2013-03-31 · latest 2025-08-07

Mentions per year 13 mentions · busiest year 2018 (3)
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  1. I rewrote my Empire game in PDP-11 assembler, long ago: https://github.com/DigitalMars/Empire-for-PDP-11 but I have little knowledge of how the CPU works internally. One could learn the -11 instruction set in a half hour, but learning the…
    comment by WalterBright · 2025-08-07 · in Software Rot
  2. …conceived minimal instruction set. Just a joy to code in. I rewrote EMPIRE into PDP-11 assembler. https://github.com/DigitalMars/Empire-for-PDP-11
    comment by WalterBright · 2025-02-06 · in I believe 6502 instruction set is a good first assembly language
  3. …missing file was one of the source files to Empire for the PDP-11, which I have now backed up on https://github.com/DigitalMars/Empire-for-PDP-11 )
    comment by WalterBright · 2021-12-30 · in Tokyo police lose 2 floppy disks containing info on public housing applicants
  4. Now that you've got a PDP-11, you can run Empire on it! https://github.com/DigitalMars/Empire-for-PDP-11
    comment by WalterBright · 2021-04-19 · in PiDP-11 – Recreating PDP-11/70 with Raspberry Pi
  5. …of sitting in a box. Anyhow, I was able to retrieve my original 11 version of Empire this way: https://github.com/DigitalMars/Empire-for-PDP-11 DEC made good machines. Not one of my machines from the 80s or 90s would power up, though I…
    comment by WalterBright · 2020-02-26 · in Recovering Fossil Data on IBM 8” Floppies [video]
  6. …he did so. Besides, I was engrossed in my models. When I got my own 11, I wrote a game for it: https://github.com/DigitalMars/Empire-for-PDP-11 > I recognize your user name Is that 11 still in operation? Wow! DEC sure makes a tank for a…
    comment by WalterBright · 2019-11-10 · in Why the Boeing 737 will never take the place of the 757
  7. Here's a piece of assembler I wrote for the LSI-11: https://github.com/DigitalMars/Empire-for-PDP-11/blob/master...
    comment by WalterBright · 2019-07-10 · in Steve Wozniak's floating point routines for the 6502
  8. …of the disks. Thank you Shal, and thanks DEC for making machines and floppies that still worked. https://github.com/DigitalMars/Empire-for-PDP-11 I wish I'd kept my 11.
    comment by WalterBright · 2019-06-17 · in Newly recovered Ground Zero photos show why you should back up your CD-Rs now
  9. …(I owned an H-11, and thinking DEC was the obvious future of microcomputing, rewrote Empire for it: https://github.com/DigitalMars/Empire-for-PDP-11 )
    comment by WalterBright · 2018-11-18 · in The Coming Crisis in Home Computers (1983)
  10. You can get Empire ( http://classicempire.com ) for the PDP-11 here: https://github.com/DigitalMars/Empire-for-PDP-11
    comment by WalterBright · 2018-10-02 · in PiDP-11: Recreating the PDP-11/70
  11. I've written a lot of assembler code (including Empire in 100% assembler https://github.com/DigitalMars/Empire-for-PDP-11 ) Assembler programs are very tedious to write, and so they tend to be rather small. You don't get any help from the…
    comment by WalterBright · 2018-07-22 · in Conflating pointers with arrays: C's biggest mistake? (2009)
  12. My last PDP-11 program was written 30 years ago! https://github.com/DigitalMars/Empire-for-PDP-11
    comment by WalterBright · 2013-06-19 · in Nuke plants to keep PDP-11 UNTIL 2050
  13. I put it on github: https://github.com/DigitalMars/Empire-for-PDP-11 I still think that PDP-11 assembler code is a thing of beauty. Here's the 1977 version of Empire written in PDP-10 FORTRAN, which I did manage to save:…
    comment by WalterBright · 2013-03-31 · in Building Photoshop 1.0