Image Map Image Map
Page 2 of 2 FirstFirst 12
Results 11 to 13 of 13

Thread: Using embedded micros for emulation/replacement of various I/O of classic computers

  1. #11
    Join Date
    Mar 2006
    Location
    Salt Lake City, UT, USA
    Posts
    231

    Default

    Quote Originally Posted by Al Kossow View Post
    I would think after 20 years of people complaining that DEC OSs are encumbered, someone would just write a work-alike for RT-11, RSX or RSTS.
    It's just human nature. Writing a new operating system is work and complaining is a hobby .

  2. #12
    Join Date
    Jan 2007
    Location
    Pacific Northwest, USA
    Posts
    31,201
    Blog Entries
    20

    Default

    Quote Originally Posted by Al Kossow View Post
    I don't understand why there is almost no new software being written for older processors, after going to all of the trouble of getting them running again.

    With all of the people hacking on PDP-11s, there are no new operating systems for it.
    I would think after 20 years of people complaining that DEC OSs are encumbered, someone would just write a work-alike for RT-11, RSX or RSTS.
    A new OS is no big deal, but getting absolute API compatibility with old applications is, particularly when said applications either lack source code or have undocumented "features". Consider the case with NT emulating MSDOS or Linux WINE emulating Windows. It's never 100%, In fact, software ISA emulators are far more successful at this--they simply emulate whatever hardware interface is needed and host the native OS.

    Of course, you can write your own applications and use whatever API you like. Unix did this--and early Unix was no great shucks--it took years before a usable set of applications made it fit for general use.

  3. #13
    Join Date
    Jan 2014
    Location
    Western North Carolina, USA
    Posts
    1,177

    Default

    Quote Originally Posted by Al Kossow View Post
    With all of the people hacking on PDP-11s, there are no new operating systems for it..
    Wouldn't Alan Cox' Fuzix qualify? There is at least a stub for a cpu-pdp11 in git.
    https://github.com/EtchedPixels/FUZIX

    But it does seem like most people running old iron seem to want to relive the glory days and run old software instead of doing something new.

    A FreeRTOS port might be interesting, and should fit easily enough, since it can run on the AVR platform, which is essentially the same horsepower as at least a portion of the range of the 11.
    Last edited by lowen; May 9th, 2019 at 10:30 AM.
    --
    Bughlt: Sckmud
    Shut her down Scotty, she's sucking mud again!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •