Hi Eric,
I did misunderstand, I get it now.
As far as the Compaq DOS experiement is was on a FAT16 whereas all my
FreeDOSs are in FAT32 (some as large as 100GB).
On Wed, Jun 8, 2016 at 6:50 PM, Eric Auer <e.a...@jpberlin.de> wrote:
>
> Hi Don,
>
> you probably misunderstood me. I said that DOS in general has security
> code in the kernel to make sure that the HMA is activated before parts
> of the kernel which are stored in HMA get used. The security code itself
> is kept outside the HMA... What exactly were you testing with FAT32 and
> Compaq and FreeDOS and which test results and differences did you see or
> expect in that testing now?
>
> Regards, Eric
>
>
> > I just tried this on Compaq DOS 5.0 with Compaq Himem only with no errors
> > and no missing paths. So unless it's a FAT32 problem it must go back to
> > FreeDOS somehow???
>
>
> > On Wed, Jun 8, 2016 at 3:30 PM, Don Flowers <donr...@gmail.com> wrote:
> >> I'm going to try a couple of things in DOS 5.0 and DOS 6.20, I'll be
> back.
>
>
> >> On Wed, Jun 8, 2016 at 2:52 PM, Eric Auer <e.a...@jpberlin.de> wrote:
> ...
> >>> the problem of using but not reserving memory for the kernel in FreeDOS
> >>> sounds vaguely similar to the problem of HMA usage in DOS in general:
> >>>
> >>> DOS installs trampoline handlers outside HMA which make sure that the
> >>> HMA is actually enabled before DOS calls code there. Maybe a similar
> >>> approach could be used for the unallocated FreeDOS memory?
>
> ...
>
>
>
>
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