DOS ain't dead

mainframe EBCDIC FAT (Announce)

posted by kerravon , Ligao, Free World North, 16.01.2025, 11:11

> But the FAT file system is the same. Except the mainframe uses EBCDIC
> normally. Can the FAT filesystem even work on EBCDIC?
>
> With the benefit of hindsight, everything becomes obvious, allegedly.
>
> Anyway, it's not quite hindsight, so I wouldn't say it's a done deal. It's
> still a work in progress.
>
> But you can see for yourself by searching for z/pdos-generic at
> http://pdos.org and downloading zpg.zip
>
> You will need a different emulator for the mainframe. I use Hercules/380
> but standard Hercules works with workaround.

This has now made significant progress and you can
download an updated version that allows you to write
and compile a "hello world" (I use makefile.zpg in
pdpclib). If source code is zipped with -ll then it
can be extracted on the mainframe with "hwzip extract".

There is also a mainframe emulator - mfemul - available
(on the PDOS/386 disk, and can run on Windows) which can
be used instead of Hercules/380.

I need to fix the memory leaking before I can get gcc 3.2.3
to recompile itself to prove the integrity. Currently it
crashes (with 333 wait state) after compiling 2 source files.

Complete thread:

• mainframe EBCDIC FAT - kerravon, 23.07.2024, 16:01 (Announce)
  • mainframe EBCDIC FAT - mbbrutman, 23.07.2024, 18:12
  • mainframe EBCDIC FAT - glennmcc, 23.07.2024, 18:29
    • mainframe EBCDIC FAT - kerravon, 24.07.2024, 01:22
      • mainframe EBCDIC FAT - glennmcc, 24.07.2024, 04:00
        • mainframe EBCDIC FAT - kerravon, 24.07.2024, 07:51
          • mainframe EBCDIC FAT - glennmcc, 26.07.2024, 19:27
            • mainframe EBCDIC FAT - kerravon, 29.07.2024, 04:51
  • mainframe EBCDIC FAT - rmcconne, 23.07.2024, 21:49
    • mainframe EBCDIC FAT - kerravon, 24.07.2024, 01:36
  • mainframe EBCDIC FAT - kerravon, 16.01.2025, 11:11
    • mainframe EBCDIC FAT - kerravon, 22.01.2025, 07:29
      • mainframe EBCDIC FAT - kerravon, 07.09.2025, 13:24