Two Stop Bitsnew | comments | tags | ask | submitlogin
  • me 687 days ago | parent | on: Welcome to the Apple Lisa Emulator Project
    There's a second Lisa emulator, idle (Incomplete Draft of a Lisa Emulator):

      https://idle-lisa-emu.sourceforge.net
    
    There are quite a lot of activities around the Lisa right now. A number of projects recreate the Lisa hardware using (mostly) original components:

    https://github.com/warmech/lisa-hardware/

    https://github.com/alexthecat123/Lisa-PCBs/

    https://github.com/alexthecat123/Lisa-GALSCSI-Card/

    Patrick Schäfer has provided Lisa hardware and tools for many years:

    http://john.ccac.rwth-aachen.de:8000/patrick/idefile.htm

    and there is an Arduino-based ProFile hard disk emulator (currently only working with the Lisa 2/5 I/O board):

    https://github.com/alexthecat123/ArduinoFile

    ...plus one based on a BeagleBoard:

    http://www.arcanebyte.com/harddrive-product/

    ...bigmessowires' floppy emulator, which also works with Lisas

    https://www.bigmessowires.com/floppy-emu/

    ...and, of course, the Lisa OS and application source code which was published in early 2023:

    https://computerhistory.org/blog/the-lisa-apples-most-influe.../

    ...plus more interesting source code including GEM, e.g. available at:

    https://stardot.org.uk/forums/viewtopic.php?t=20964

    https://github.com/stepleton/

    • Rochus 686 days ago
      Thanks for the links.

      Here is yet another one: https://github.com/rochus-keller/LisaPascal

      • me 686 days ago
        Ah, darn, I knew I wanted to add your repos, sorry. Thanks for the reminder!

        Are you planning to extend the compiler into a full Pascal cross compiler for the Lisa? That would be _very_ nice to have...

        • Rochus 686 days ago
          I spent quite some time studying the Pascal and Assembler source code, but could not resolve all symbols, and there are also several ambiguities, which led me to the conclusion that I would also have to build an interpreter for all the build related files and try to reconstruct a complete build with the correct options in order to be able to make any statement about the completeness and integrity of the code. That would take a lot of time at the expense of my other interests. That's why I've put the project on hold for the time being.
  • me 723 days ago | parent | on: The Apple Network Server's all-too-secret weapon (...
    A fascinating and extensive insight into an almost forgotten era of Apple… I’m happy that Apple eventually ended up choosing NeXT, but I would have loved to own an ANS back then (I was running A/UX on a IIci and MkLinux on a PowerMac 6100 and had access to IBM and Motorola AIX machines…), especially with the never-released A/UX 4 :).
    • classichasclass 722 days ago
      It was a really strange time. I loved my ANS and other than a brief time I got to touch an A/UX console (though I lacked a login) it was the only Apple Unix thing I used contemporaneously. Apple truly seemed all over the place. Otherwise for me personally it was all BSD and classic Mac OS, as a child of the University of California. 8-)
  • me 737 days ago | parent | on: A superoptimizer for 6502 instructions
    A superoptimizer tries to find the shortest sequence of instructions that is semantically equivalent to a given sequence of code. Since the search space is pretty large, brute force approaches don't work here.

    You can find a good introduction to superoptimizers in Massalin's (known for the Synthesis self-optimizing OS) paper at https://dl.acm.org/doi/abs/10.1145/36177.36194

  • me 742 days ago | parent | on: Someone wrote a new windowing system from scratch ...
    Aaah, the nice 68k-based Smalltalk machine!
  • me 745 days ago | parent | on: Macintosh Application Environment 3.0 — The virtua...
    There was Ardi‘s Executor, but I don’t think there was an IRIX port. You could port Executor yourself now, it was open sourced some years ago: https://github.com/ctm/executor

    In addition, there is a port of the Basilisk II emulator (this requires a copy of the original Mac ROMs, Executor reimplements the ROM parts of the Mac System, MAE includes a copy of the ROM as it was an official Apple product): https://forums.irixnet.org/printthread.php?tid=977

    • anthk 742 days ago
      Get the executor fork, it's much more updated:

      https://github.com/autc04/executor

  • me 748 days ago | parent | on: Apple Unveils Next Generation Copland Mac OS to De...
    A lot more information on Copland, including installation guides (it runs on early PPC Macs, e.g. the 6100/7100/8100 series), can be found at https://wiki.preterhuman.net/Apple_Copland
  • me 748 days ago | parent | on: Vintage Computing Festival Berlin 2023 videos
    All VCFB videos are online now.

    The videos presented in English are (though some use German slides):

      - Plan 9 (Angelo Papenhoff)
    
    https://media.ccc.de/v/vcfb2023_-_197_-_de_-_202310141215_-_...

      - Recovery of Software from the 1950 Whirlwind Computer Project (Guy Fedorkow)
    
    https://media.ccc.de/v/vcfb2023_-_180_-_de_-_202310141030_-_...

      - MEGA65 Peek the Past, Poke the Future (Oliver Graf)
    
    https://media.ccc.de/v/vcfb2023_-_185_-_de_-_202310141545_-_...

      - Geometrie in Bunt Das grafische Terminal Robotron K8918 (Dirk Kahnert)
         (Geometry in color - the graphical terminal Robotron K8918) 
    
    https://media.ccc.de/v/vcfb2023_-_183_-_de_-_202310141400_-_...

      - How Can We Spot Future Retro Classics? (Fritz Hohl)
    
    https://media.ccc.de/v/vcfb2023_-_188_-_en_-_202310141900_-_...

      - History of the Incompatible Timesharing System (Lars Brinkhoff)
    
    https://media.ccc.de/v/vcfb2023_-_190_-_en_-_202310151015_-_...

      - Die Schickardsche Rechenmaschine wird 400 (Jürgen Weigert)
        (Schickard's calculating machine turns 400)
     
    https://media.ccc.de/v/vcfb2023_-_184_-_de_-_202310141500_-_...

    And, last but not least, my own talk about the history, technology and recreation of the Apple Lisa:

      - Ignored, Disposed of, Revived - Four Decades of Apple's Lisa (Michael Engel)
     
    https://media.ccc.de/v/vcfb2023_-_193_-_en_-_202310151500_-_...
  • me 749 days ago | parent | on: Vintage Computing Festival Berlin 2023 videos
    The first videos of last weekend's VCFB talks have been published, the remaining ones should appear later this week. Beware, some of the talks are in German.

    Here's the program: https://vcfb.de/2023/vortraege_workshops.html

    • Screwtapello 749 days ago
      Is there an easy way to figure out which talks are in German before the video comes out?
      • me 749 days ago
        That's unfortunately a bit more complicated, since the language of the title in the program doesn't necessarily match the language of the talk - for example, the Plan 9 talk was in English (but with German slides).

        I'll post a list of English VCFB talks here when all videos are online.

lists | rss | source
Search:
Two Stop Bits is a discussion web site about retro computing and gaming.