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dosmemget

Syntax

 
#include <sys/movedata.h>

void dosmemget(int offset, int length, void *buffer);

Description

This function transfers data from MS-DOS's conventional memory space to the program's virtual address space. The offset is a physical address, which can be computed from a real-mode segment/offset pair as follows:

 
offset = segment * 16 + offset;

The length is the number of bytes to transfer, and buffer is a pointer to somewhere in your virtual address space (such as memory obtained from malloc) where the data will go.

Return Value

None.

Portability

ANSI/ISO C No
POSIX No

Example

 
unsigned short shift_state;
dosmemget(0x417, 2, &shift_state);
if (shift_state & 0x0004)
  /* Ctrl key pressed */;


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