🚀 go-pugleaf

In article <1992Sep29.070357.23292@CS.ORST.EDU> @prism.cs.orst.edu writes:
>I need to allocate two 64k buffers in ram from a 16bit device driver. Each of
>the buffers must be completely contained in a segment. They cannot cross a
>segment boundary. Does anyone know of a way to do this?
>
>Thanks
>
>Keith

I've never actually done it, but I'm studying the PDD reference right now
for a similar idea.  From what I can make of it you could do the following
DevHlp calls:

   VMAlloc() to allocate the 64 Kb chunk
   VMLock() to fix the 64 Kb chunk in memory
   LinToGDTSelector() to convert the 32-bit linear address to a selector

I think that is all you need, just do this twice to get 2 64 Kb chunks.  Note
that 64 Kb is the limit for the LinToGDTSelector() call so you are ok.

 - John
 
-------------------------------------------------------------------------------
John Freeborg          Software Engineer         Persoft
johnf@persoft.com                                465 Science Dr.
608-273-6000                                     Madison, WI 53711