Hello Aitor,
> (1) There is a /TEST option (not present in MS-HIMEM), and at the same
> time, MS-HIMEM implements a /TESTMEM:ON|OFF option to do this (defaults
> to ON). /TEST does a nice test by allocating, filling, testing,
> resizing,..... to determine the reliability of the extended memory.
> I just wanted to ask if there's something I missing about something
> which is obvious (?)
differences:
the MS HIMEM test (done always, unless disabled) is probably a much
better memory tester.
FD HIMEM is a VERY dull memory tester. I wrote it more to test HIMEM
correct internal working, then as an attempt do do a serious memory
tester.
> (2) This is something about TASM/MASM: what is a COMMENT block?
MASM:
comment ~
everything is a comment up to the next
~
> (3) XMS UMB functions are not supported. I just wonder if MS-HIMEM
> implements them: now that HIMEM is quite machine specific, perhaps this
> is the way Microsoft implement their "UMBPCI" (just a reflection)
it's not in - neither in MS HIMEM.
but the himem call mechanism is intended to be hooked (by emm386,
umbpci or similar)
> (4) Finally, I am unable to understand the whole process behind making a
> mixed SYS/EXE driver, can someone clarify about this?
> - HIMEM64 starts with a device driver header
> - HIMEM.EXE actually starts with "MZ", so it can be open as an
> executable. How is that the kernel can open it as a driver, if it
> doesn't start with the device driver header?
> - Who calls ASMSTART_EXE?
if the kernel loads a device= , it uses the device driver header.
if the kernel loads an executable, it looks into the MZ-header to find
the start address (which happens to be ASMSTART_EXE)
tom
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