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EDR-DOS kernel and command interpreter v20260309

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@boeckmann boeckmann released this 15 Mar 11:07

This is a release of the single-file (KERNEL.SYS) and dual-file (DRBIO.SYS, DRDOS.SYS) kernel flavors, as well as the command interpreter COMMAND.COM. 1.44M floppy images are also provided.

If unsure which flavor to use: the single-file version (without _dual in the file name) is probably the one you want.

Changes since release 20250427

Changes

  • KERNEL: relocate volume (un)locking from driver to INT21.440D handler (RDISK.COM compatibility)

Fixes

  • KERNEL: prevent B: being a phantom drive of A: if no physical drive is installed
  • COMMAND: fix SET command creating duplicate environment variables in some cases

Full Changelog: v20250427...v20260309