[syslinux] Problem with FreeDOS + himem64 + PXELINUX + memdisk
H. Peter Anvin
hpa at zytor.com
Mon Jan 26 19:56:50 PST 2004
Patrick J. LoPresti wrote:
>
> Eric Auer, a FreeDOS developer, commented:
>
> Note that MEMDISK access might fail while A20 is off - the handler
> itself is in 40:[13] allocated low memory, but the disk itself is
> in int 15 high memory as far as I remember. You should check the
> MEMDISK sources to see how disk data is accessed and what is done
> for the A20.
>
> Unfortunately, I do not know enough x86 assembly to understand the
> memdisk sources.
>
MEMDISK uses the INT 15h AH=87h mover function, using 386-style selectors.
-hpa
More information about the Syslinux
mailing list