DOS ain't dead

OS/2 extender (Developers)

posted by kerravon , Ligao, Free World North, 10.09.2025, 21:05

The mainframe work has created an unexpected development.

So OS/2 2.0 is a 32-bit OS.

In the same way that we have 32-bit DOS extenders to allow access to memory above 1 MiB - is it technically feasible to have a 64-bit OS/2 extender to allow access to memory above 4 GiB?

What would that look like?

Are there 64-bit DOS extenders? If so, maybe it would look like that?

Any reason to not use the PE32+ Win64 API as the DOS and/or OS2 extender? What would the alternative be? Is there a 64-bit LX format?

Complete thread:

• OS/2 extender - kerravon, 10.09.2025, 21:05 (Developers)
  • OS/2 extender - Rugxulo, 10.09.2025, 21:30
  • OS/2 extender - Ringding, 11.09.2025, 17:44
    • OS/2 extender - kerravon, 11.09.2025, 17:57
      • OS/2 extender - Ringding, 11.09.2025, 20:41
        • OS/2 extender - kerravon, 12.09.2025, 00:08
          • OS/2 extender - Rugxulo, 12.09.2025, 04:07
            • OS/2 extender - kerravon, 12.09.2025, 16:55
          • OS/2 extender - Ringding, 12.09.2025, 17:20
            • OS/2 extender - kerravon, 12.09.2025, 18:03