DOS ain't dead

trip report: Tiny C Compiler 0.9.27 (Miscellaneous)

posted by Japheth , Germany (South), 04.02.2026, 21:12

> https://github.com/Baron-von-Riedesel/HX/blob/master/Src/DPMILDR/DPMILDR.ASM#L2864
>
> Interesting that this behaves differently in FreeDOS than in SvarDOS.

It's perhaps a COMMAND.COM issue.

I cannot remember all details currently, but since the cmdline in the PSP is restricted to 126 bytes, MS has extended this in MS-DOS 7.x : there's supposed to exist an environment variable CMDLINE, which may hold a cmdline of "any" size. HX's Win32 kernel emulation dkrnl32 uses this environment variable if possible.

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MS-DOS forever!

Complete thread:

• trip report: Tiny C Compiler 0.9.27 - bencollver, 04.02.2026, 17:02 (Miscellaneous)
  • trip report: Tiny C Compiler 0.9.27 - tkchia, 04.02.2026, 17:55
    • trip report: Tiny C Compiler 0.9.27 - bencollver, 04.02.2026, 18:48
      • trip report: Tiny C Compiler 0.9.27 - Japheth, 04.02.2026, 21:12
        • trip report: Tiny C Compiler 0.9.27 - bencollver, 04.02.2026, 21:44
        • trip report: Tiny C Compiler 0.9.27 - bretjohn, 05.02.2026, 22:24
          • trip report: Tiny C Compiler 0.9.27 - Rugxulo, 05.02.2026, 23:09
            • trip report: Tiny C Compiler 0.9.27 - bretjohn, 06.02.2026, 01:59
      • trip report: Tiny C Compiler 0.9.27 - bencollver, 04.02.2026, 21:38
        • trip report: Tiny C Compiler 0.9.27 - tkchia, 05.02.2026, 16:44
          • trip report: Tiny C Compiler 0.9.27 - bencollver, 05.02.2026, 18:34
            • trip report: Tiny C Compiler 0.9.27 - bencollver, 05.02.2026, 22:22
              • trip report: Tiny C Compiler 0.9.27 - tkchia, 05.02.2026, 23:13
              • trip report: Tiny C Compiler 0.9.27 - Rugxulo, 05.02.2026, 23:16
              • trip report: Tiny C Compiler 0.9.27 - tkchia, 05.02.2026, 23:18
              • trip report: Tiny C Compiler 0.9.27 - tkchia, 06.02.2026, 23:45
  • trip report: Tiny C Compiler 0.9.27 - bencollver, 11.02.2026, 00:44
    • trip report: Tiny C Compiler 0.9.27 - Rugxulo, 11.02.2026, 01:42
      • trip report: Tiny C Compiler 0.9.27 - bencollver, 11.02.2026, 02:06