DOS ain't dead - JEMM(EX) and too much XMSHANDLES problem

JEMM(EX) and too much XMSHANDLES problem (Announce)

posted by RayeR , CZ, 16.03.2026, 21:57

> Yes, newer jemms respect reserved regions reported by int 15h ax=e820h

What could happen with old JEMM when it use E000 page frame? Memory corruption? I expect problems only with such old programs that really use EMS...

> It only happens if jemm isn't allowed to move its resident part into the
> upper memory region ( by using option NOHI or X=A000-FFFF ). So it's not
> really a show-stopper...

Aha, I would guess that it's not so uncommon that whole E000-FFFF is used by BIOS and then only D000 segment remains (JEMM prefers use it as page frame instead UMB by default)...

> > BTW does this JEMMEX contains also NMI fixes for AWE64 so I can have a
> > single version?
> Yes.

Cool, will be official release soon? :)

---
DOS gives me freedom to unlimited HW access.

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Complete thread:

AweMidi - a Dos32Awe alternative - Japheth, 18.02.2026, 08:38 (Announce)
- AweMidi - a Dos32Awe alternative - Japheth, 23.02.2026, 08:13
- AweMidi - a Dos32Awe alternative - RayeR, 02.03.2026, 06:45
  - AweMidi - a Dos32Awe alternative - Japheth, 02.03.2026, 14:34
    - AweMidi - a Dos32Awe alternative - RayeR, 02.03.2026, 18:32
- JEMM(EX) and too much XMSHANDLES problem - RayeR, 09.03.2026, 04:28
  - JEMM(EX) and too much XMSHANDLES problem - Japheth, 09.03.2026, 12:54
    - JEMM(EX) and too much XMSHANDLES problem - RayeR, 09.03.2026, 15:00
    - JEMM(EX) and too much XMSHANDLES problem - RayeR, 10.03.2026, 02:12
      - JEMM(EX) and too much XMSHANDLES problem - Japheth, 10.03.2026, 08:44
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 10.03.2026, 14:20
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 11.03.2026, 03:44
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 11.03.2026, 07:51
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 12.03.2026, 01:54
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 12.03.2026, 08:11
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 12.03.2026, 14:03
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 12.03.2026, 15:18
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 12.03.2026, 16:36
        JEMM(EX) and too much XMSHANDLES problem - bretjohn, 12.03.2026, 23:35
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 13.03.2026, 02:30
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 13.03.2026, 08:43
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 13.03.2026, 15:07
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 14.03.2026, 02:47
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 14.03.2026, 03:57
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 16.03.2026, 21:57
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 17.03.2026, 12:05
        JEMM(EX) and too much XMSHANDLES problem - RayeR, 17.03.2026, 13:39
        JEMM(EX) and too much XMSHANDLES problem - Japheth, 17.03.2026, 17:46