🚀 go-pugleaf

reznick@acf3.NYU.EDU (Daniel Reznick) writes:
> I am interested in utilizing XMS and EMS memory in programs being
> developed with BC++ 3.1, written in assembly and C (the plain vanilla
> version).  If any one can give me and pointers to good references,
> otimally with code examples, I would be most appreciative.  Either
> assember or C would be fine.  Also, does the memory model begin used
> affect this at all? (im sure it does somewhat..) thanks.

Best source of information is Ralf Brown's famous interrupt list.
It is available from several BBSs.

XMS is accessed by a FAR call to an address that is given to you
by an INT 21h call (dunno which, look it up). There are several
functions to allocate XMS memory and copy data from lower 1meg
address space to XMS and vice versa.

EMS can be accessed via several calls to INT 67h (hope that's correct...)
and normal read/write operations to a 64k window in lower 1meg address
space.

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Christian Blum                   Universitaet des Saarlandes, Germany
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