FVAR

The FVAR macro accesses absolute memory addresses in the far memory area (the HDATA memory class). You may use this macro in your programs as follows:

#include <absacc.h>    /* Include Macro Definitions */
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#define IOVAL FVAR (long, 0x14FFE) /* long at HDATA address 0x14FFE */

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

var = FVAR (int, 0x24002)          /* read int from HDATA address 0x24002 */
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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 0xFFFE.