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

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

posted by RayeR , CZ, 09.03.2026, 04:28

BTW I found a problem with JEMM (5.87 but older version too) on one Pentium M laptop, 2GB RAM, i855 chipset - when JEMMEX is loaded with XMSHANDLES=60 and more (from config.sys, 1st driver loaded) it crashes or reboot. I had copied config.sys from other machine with XMSHANDLES=64 where it worked without problems but triggered problem on this laptop. Any idea what can cause this? I lowered XMSHANDLES=56 and here's XMSSTAT output:
XMS call address: e500:90 XMS version: 3.0, driver version: 3.82 HMA handled by XMS host, HMA is allocated v2 free memory largest/total (kB): 65535/65535 v3 free memory largest/total (kB): 1833280/1833280, highest addr: 7ffcffff XMS handle table at e500:cc, handle cnt/size=56/10 XMS handle array at e500:d4 no handle region size(kB) locks flags ------------------------------------------------------------ 1 d4 000110000- 00013ffff 192 0 2 used 2 de 000140000- 01017ffff 262400 1 2 used 3 e8 010180000- 07ffcffff 1833280 0 1 free ------------------------------------------------------------ 2095872 free handles: 53 no free UMBs available

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DOS gives me freedom to unlimited HW access.

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Complete thread:

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- AweMidi - a Dos32Awe alternative - Japheth, 23.02.2026, 08:13
- AweMidi - a Dos32Awe alternative - RayeR, 02.03.2026, 06:45
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    - 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