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someone tested JEMM386 on... 386?¿

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First post, by theelf

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Hi!! exactly this, i tested jemm386 from config.sys or command line on some pentium PCs, P1, P2, K6, etc and work fine, for example games like Aladdin or lemmings 2 that need EMS,work great

But in 3 different 386 boards i have, 386SX40 SARC chipset, 386DX40 VLSI and 486DLC33 Opti, i can get jemm386 to work correctly... load yes, but or i get graphic glitches, like in aladdin, or directly dont work, like lemmings, that i just get a black screen

Maybe despite the name... jemm386 need Pentium+ ?¿

thanks

Reply 2 of 6, by theelf

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cyclone3d wrote on 2026-07-06, 22:34:

It is probably grabbing memory space that it should leave alone. There should be switches to exclude whatever memory areas you need to exclude.

hi thanks i tested X=C000-CFFF, X=D000-DFFF, X=C800-CFFF, X=D800-DFFF JEMM386 loads, but I still get the same problems

tried different EMS frames
FRAME=C800
FRAME=D000
FRAME=E000

No change, same glitches

Any ideas?

Reply 4 of 6, by theelf

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cyclone3d wrote on 2026-07-07, 03:16:

If you aren't already using it, try himemx instead of regular himem.

xmgr, himemx, himemx2, pcdos himem386, and others, same

but in all pentium machines i have, despite chipset, jemm386 work perfect without any parameter, just "load"

No idea, tested in 4x pentium boards, all sucess, 3x 386 boards all fail

I have no more 386 boards to test

Reply 5 of 6, by weedeewee

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theelf wrote on 2026-07-07, 08:49:
xmgr, himemx, himemx2, pcdos himem386, and others, same […]
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cyclone3d wrote on 2026-07-07, 03:16:

If you aren't already using it, try himemx instead of regular himem.

xmgr, himemx, himemx2, pcdos himem386, and others, same

but in all pentium machines i have, despite chipset, jemm386 work perfect without any parameter, just "load"

No idea, tested in 4x pentium boards, all sucess, 3x 386 boards all fail

I have no more 386 boards to test

Out of curiosity and to give some more detail to the post.

Which 386 boards exactly ? trw links ?
tnx

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Reply 6 of 6, by theelf

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weedeewee wrote on 2026-07-07, 14:59:
Out of curiosity and to give some more detail to the post. […]
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theelf wrote on 2026-07-07, 08:49:
xmgr, himemx, himemx2, pcdos himem386, and others, same […]
Show full quote
cyclone3d wrote on 2026-07-07, 03:16:

If you aren't already using it, try himemx instead of regular himem.

xmgr, himemx, himemx2, pcdos himem386, and others, same

but in all pentium machines i have, despite chipset, jemm386 work perfect without any parameter, just "load"

No idea, tested in 4x pentium boards, all sucess, 3x 386 boards all fail

I have no more 386 boards to test

Out of curiosity and to give some more detail to the post.

Which 386 boards exactly ? trw links ?
tnx

hi, yes, one is this one opti

Found my childhood motherboard

with sarc chipset

https://theretroweb.com/motherboards/s/auva-c … mputer-npm16-a0

the vlsi

https://theretroweb.com/motherboards/s/ami-ma … by-screamer-s42

and i tested this two too, but i dont found in theretroweb, i take picture, sorry bad quality is night here. Both industrial boards, the ISA with backplate sarc, the other is CHIPS

The attachment 20260707_232858.jpg is no longer available
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