Hi! FreeDOS sourceforge news write:
https://sourceforge.net/p/freedos/news/2026/02/jemm-586/
Jemm is an "Expanded Memory Manager" (EMM), based on the source of
FreeDOS emm386. Jemm386 is the standard version which needs an external
eXtended Memory Manager (XMM; examples: HimemX, MS Himem, XMGR ) to be
loaded, and JemmEx is the extended version which has an XMM already
included. Japheth has released Jemm version 5.86, with several fixes and
features. Read the details at the Jemm release page on GitHub. We've
also mirrored this on the FreeDOS files archive at ibiblio, under
/files/dos/emm386/jemm
Links:
https://github.com/Baron-von-Riedesel/Jemm/releases/tag/v5.86
http://ibiblio.org/pub/micro/pc-stuff/freedos/files/dos/emm386/jemm/5.86/
The release notes:
v5.86 Latest
@Baron-von-Riedesel Baron-von-Riedesel released this 25 Jan 06:05
ยท 4 commits to master since this release
v5.86
18b609f
service table: added control proc member to allow Jemm to call out on
certain events; currently "device_reboot_notify" is the only call-out.
service table: added v86faults member - allows programs to hook into
v86 faults; used by JLOAD.
Simulate_Int: call an installed v86 hook proc before running the INT.
JemmEx, XMS AH=0Eh: invalid handle error returned if size > 65535 kB;
this is MS Himem compatible.
JLMs Reboot & FastBoot added.
fixed debug displays in 16-bit part.
fixed debug displays in Jemm16.asm, UnloadJemm.
JemmEx: option NOE820 reintroduced; it's a noop unless MAXSEXT is 0.
fixed option UNLOAD: on 80386/80486 cpus, it wasn't safe.
JLM QPIEmu: added function ax=5000h.
reintroduced compatibility with SB emulation drivers SB(E)INIT for SB PCI
cards by extending functionality of cmdline option SB.
NMI stability increased.
There is a thread about this on BTTR - some fixes help sound drivers:
DOS32AWE - RAM wavetable MIDI possible for PM games under DOS
https://www.bttr-software.de/forum/board_entry.php?id=23068
See also:
AweMidi - a Dos32Awe alternative
https://www.bttr-software.de/forum/board_entry.php?id=23204
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