Hello.

Bart Oldeman wrote:
HIMEM.SYS might be able to
run in DOSEMU if DOSEMU would implement int 0x15/0x87 to copy extended
memory though.
It can't.

HIMEM.SYS might be able to
run in DOSEMU if DOSEMU would implement int 0x15/0x87 to copy extended
memory though.
Real mode is an ultimate requirement
for himem to work. You can't set up
the Big Real Mode from within v86.
Here is the source:
http://honors.tntech.edu/~will/fileformat.virtualave.net/programming/himem/xm386.asm
Here is the relevant part:
---
mov     bx, descRealBig - OurGDT ; Special 4Gb selector
lgdt    qword ptr cs:[GDTPtr]

mov     eax, cr0
or      al,1
mov     cr0, eax         ; Go into Protected Mode
                         ; NOTE: NMIs will kill us!!!
---
Both "lgdt" and "mov cr0" are priviledged.

-
To unsubscribe from this list: send the line "unsubscribe linux-msdos" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to