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

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

posted by RayeR , CZ, 14.03.2026, 02:47

> Here's a (hopefully) fixed JemmEx:
> https://drive.google.com/file/d/13tjH7etB_XVvYX6UUaSR71wK5c4ZAnb4/view?usp=drive_link

Thank you for the fix, now it seems to run OK.
I observed one difference in behavior. Old JEMMEX allocated EMS page frame at E000 which seems to be used by BIOS. As I don't usually run EMS programs it didn't caused any problem. Newer JEMMEXes allocated EMS page frame at D000 which occupy all free UMB so then not available for drivers and TSR. I had to add FRAME=NONE (or NOEMS) to use D000 segment for UMB. I=TEST gives some little chunks in E000-FFFF region but too small to load bigger TSR in...

Why the bug was not triggered on other systems? Something specific here? Nobody else reported such problem for years...

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

---
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