Displaying 3 results from an estimated 3 matches for "int_13h_ah".
2017 Mar 26
1
isohybrid
Sounds like we should change the "and cx" mask to 5 so that if either EHDD
support or LBA is announced by the bios, the correct EHDD path will be
taken.
Phil P.
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2017 Mar 25
1
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
...> * DX
> > > * I die now.
i wrote:
> > I place my bet on CX value 4. :))
David Christensen wrote:
> No carry.
> 3000
> AA55
> 0004
> 0080
> I die now
Hah ! CX announces no LBA addressing but Enhanced Disk Drive Support.
https://en.wikipedia.org/wiki/INT_13H#INT_13h_AH.3D41h:_Check_Extensions_Present
So isohdpfc pushed CX = 4 onto the stack, because it skipped
andw 1,%xc
So isolinux.bin read in "EHDD" mode by LBA and succeeded although it
did not announce this capability.
isohdpfd reached the "andw" instruction. So CX was set to (1 &...
2017 Mar 23
6
"isolinux.bin missing or corrupt" when booting USB flash drive in old PC
Hi,
Geert Stappers wrote:
> Contact David off-list, he did unsubscribe.
Can you tell when he unsubscribed (i.e. which of the messages he got
as last one) ?
> Martin posted elsewhere in this thread "Thomas, you found the bug"
> and provided a patch.
Open question is whether the fix helps with David's BIOS.
The newest answer from Martin indicates that a failure to read