🚀 go-pugleaf

brent@well.sf.ca.us (Brent Southard) writes:
>                        Well, I tried to allocate that 2MB block using the
>Allocate Extended Memory Block function (09h), and got back an error, BL==A0,
>which implies that ALL extended memory is allocated.  Huh?  I tried halving my
>request, and it succeeded.  What gives?

Brent, it's possible that Windows won't allocate more than a meg of 16-bit
memory because of limits involving 16-bit pointer arithmetic and selectors.
So here's an alternative:

Look at Appendix E of the SDK.  Use the 32-bit memory allocation functions.
I have succesfully allocated much larger chunks of memory using the
Global32Alloc() function.  You can refer to the memory with 16-bit pointers
if you need to by getting a 16-bit alias with Global16PointerAlloc().

As far as insuring that the memory is contiguous and page locked ...

... I'm afraid you're on your own.  But if you find a way to do it, I'd
certainly like to hear about it.

Mojo
Caere Corp.
netcom!mojo@apple.com
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