Renesas TM V.3.20A Especificaciones descargar pdf (Pagina 57)

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101

Renesas Technology, Tools FAQs

Last Updated: September 20, 2000

Document Number: 01051234_e

What kind of declaration should I make in order to assign the array body in a far area and assign the array's reference pointer in a

near area?

For example, to declare a 64-byte short-type array, make the following declaration.

/* (1) declare array body */

short far data[64];

/* (2) declare pointer to array */

short far *pdata;

The pointer in (2) above should be assigned in a near area in the following manner. The destination indicated by the pointer is a far

area.

near |----------|

|- pdata -| <---4 bytes (stores the start address of the array)

|----------|

| |

In addition, you can change the area assigned by the pointer to the array, as well as its destination area, as follows.

short * far pdata

/* (a) pdata in a far area and its pointer destination in a near area

(if far is omitted, it will be treated as near)*/

short far * far pdata

/* (b) pdata in a far area and its pointer destination in a far area */

short far * pdata

/* (c) pdata in a near area and its pointer destination in a far area */

short * pdata

/* (d) pdata in a near area and its pointer destination in a near area */

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Renesas TM V.3.20A Especificaciones Pagina 57

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