MVAR

The MVAR macro accesses absolute memory addresses in the far memory area (in segmented mode) or in the standard near memory area (in Tiny model or non-segmented mode). You may use this macro in your programs as follows:

#include <absacc.h>    /* Include Macro Definitions */
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#define IOVAL MVAR (long, 0x4FFE)  /* long at 0x4FFE */

var = IOVAL;                       /* read */
IOVAL = 0x10;                      /* write */

var = MVAR (int, 0x4002)           /* read int from 0x4002 */
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Note

• Objects accessed using this macro may not cross a 64KB segment boundary. For example, you cannot access a long variable at address 0x00FFFE.