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Date: Fri, 15 Jun 2001 09:44:47 +1000
To: djgpp AT delorie DOT com
From: Katharina Siebke <siebke AT rsbs DOT anu DOT edu DOT au>
Subject: still fighting with DOS, here memory allocation
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Hi group, this is my first question to you.
I hope I am in the right place to ask this question:
who still knows DOS?
I have got a program wich contains this code:
-----------------------------------------------------------------------------------------------------------
/* this is just to recall the definition */

typedef struct {
   unsigned short offset16;
   unsigned short segment;
} __dpmi_raddr;

This structure is used to hold a real-mode address, which consists of a 
segment:offset pair.

typedef struct {
   unsigned long  offset32;
   unsigned short selector;
} __dpmi_paddr;
-------------------------------------------------------------------------------------------------------------

static __dpmi_raddr dosside;       /*dos address of  buffer*/
static __dpmi_paddr protectside; /*protect side of  buffer*/
int sel,

dosside.offset16=0;
dosside.segment = __dpmi_allocate_dos_memory((MEM_BLOCK+15)>>4, &sel);
protectside.selector= (unsigned short) sel;


My question is, are these both pointers:
dosside.segment and protectside.segment really show to the same piece of 
memory.
Or in other words how does an integer pointing to a piece of memory 
translated into the given structure.

Who can help me with that?
Thank you Katharina