[Qemu-devel] Problem with DOS application and 286 DOS Extender application

[Gerhard Wiesinger]

Hello,

I'm having a problem with a DOS application which uses a 286 DOS 
Extender, error message is as the following:
unable to create task for execution
Interrupt 10 (Ah) while creating task: Invalid task segment selector.
Happens with QEMM386 and HIMEM.SYS/EMM386.EXE.

I guess the application does at this point swithing to 286 protected mode and 
trying to move conventional memory up to EMS memory.

Issue is NOT present under VMWare Server 2.0 and with real hardware.

DOS; MS-DOS 6.22
QEMU: 0.12.3 under Fedora 11, 2.6.30.10-105.2.23.fc11.x86 on AMD Phenom II Quad 
Core, x86_64-softmmu.

Any comments or ideas (I guess something with protected mode and MMU might 
be wrong)?

Thnx.

Ciao,
Gerhard

--
http://www.wiesinger.com/